7. Caulerpa brownii. J. Ag. (C. brownii and C. furcifolia: Fl. Nov.-Zel., p. 260).

Lyall's Bay Lyall. Bluff, Warrington, Banks Peninsula, Lyall's Bay Berggren. St. Clair, Kaikoura, Lyall's Bay: R. M. L. Green Island Beach: J. C. S. Chatham Islands: Travers; Dr. Schauinsland.

8. Caulerpa hypnoides. Fl. Nov.-Zel., p. 260.

East Coast: Colenso. Bay of Islands: Berggren.

Order Codiaceæ.

9. Bryopsis vestita, J. Ag., De Alg. N.Z. mar., p. 3 (B plumosa: Fl. Nov.-Zel., p. 261 ?).

Bluff, Warrington: Berggren. Lyttelton, Wellington : R. M. L. St. Clair, Green Island Beach: J. C. S.

10. Codium adhærens. Fl. Nov.-Zel., p. 261. Everywhere abundant. ́

11. Codium tomentosum. Fl. Nov.-Zel., p. 261. Everywhere abundant.

Order Cladophoraces.

Our New Zealand species of Cladophora are in need of careful revision. I have several in my collection which I find it impossible to identify, one at least probably new. The species are nearly all difficult of discrimination, and have been but little collected. As it is almost impossible to name them without type specimens, the following list of species is copied from Agardh's De Algis Nov.-Zel. mar. I have, however, inserted, somewhat hesitatingly, two species not previously recorded in any New Zealand list-C. feredayi and C. valoniordes. The identification of the latter is due to Kjellman. Mr. Crosby Smith was the first to call my attention to the former. He obtained a specimen of it at the lower Green Island Beach. Since then I have collected it myself at various more southern localities. It seems to be identical with the Australian species (Harvey, Phyc. Aust., vol. i., pl. 47). I sent a named specimen of it to Professor Agardh, who noted it "C. feredayi, forsitan ita."

12. Cladophora crinalis. Fl. Nov.-Zel., p. 263.

New Zealand: Colenso. Half-moon Bay: R. M. L.

13. Cladophora gracilis. Fl. Nov.-Zel., p. 263. Port William: Lyall.

14. Cladophora daviesii. Fl. Nov.-Zel., p. 263. Tauranga Colenso; Berggren.

15. Cladophora colensoi. Fl. Nov.-Zel., p. 262.

Hawke's Bay: Colenso.

I have a specimen from the Kaik, Otago Harbour, collected by Mr. Crosby Smith, which apparently belongs to this species.

16. Cladophora verticillata. Fl. Nov.-Zel., p. 262.

Port William: Lyall.

17. Cladophora pellucida. Fl. Nov.-Zel., p. 262.

Waitemata Harbour: Lyall. The Bluff: R. M. L.

18. Cladophora feredayi (?). Harv., Phyc. Austr., vol. i. Lower Green Island Beach: Crosby Smith. The Nuggets, the Bluff: R. M. L.

This may only be a much laxer form of C. pellucida, growing in deeper water.

19. Cladophora lyallii. Fl. Nov.-Zel., p. 262.

South Island Lyall. Half-moon Bay: J. C. S.; R. M. L. 20. Cladophora herpestica. Fl. Nov.-Zel., p. 262.

Bay of Islands: Hombron; Hooker.

21. Cladophora valonioides, Sond. (Harvey Gibson, Journal of Botany, June, 1893).

22. Lychate longearticulata, J. Ag., De Alg. N.Z. mar., p. 2. Banks Peninsula: Berggren.

23. Lychate linum. Fl. Dan. and C. Ag. Syst., p. 97 (Conferva area: Fl. Nov.-Zel., p. 263?).

Tauranga Berggren. The Bluff, Lyttelton, Wellington: R. M. L.

24. Lychate darwinii. Fl. Nov.-Zel., p. 263.

East Coast Lyall; Colenso. Bluff, Warrington, Banks Peninsula Berggren. Akatore, St. Clair, Taylor's Mistake, Kaikoura R. M. L. Chatham Islands: Dr. Schauinsland.

Order Ulvaceæ.

25. Ulva rigida, Ag. (Ulva lobata and Ulva latissima, Harv., Fl. Nov.-Zel., p. 265).

Everywhere common.

26. Ulva builosa(?), Roth., Fl. N.Z., ii., p. 265.

I have specimens gathered at Happy Valley and Oriental Bay, Wellington, apparently to be referred to the plant designated by Harvey "Ulva bullosa(?)." This identification is, however, more than questionable. Ulva bullosa, Roth., is now Monostroma bullosum, J. Ag. (Till Alg. Syst., part iii., p. 97). On forwarding specimens collected by myself to Agardh, he considered them as probably nearer the doubtful species-Ulva cornucopiæ.

27. Enteromorpha bulbosa (Suhr in Flora, 1839, p. 72), J. Ag., Till Alg. Syst., iii., p. 139.

Chatham Islands.

28. Enteromorpha lingulata, J. Ag., Till Alg. Syst., iii., p. 143.

Intermediate between E. compressa and E. clathrata. Probably common.

29. Enteromorpha compressa. Fl. Nov.-Zel., ii.,

p. 264.

This is said to be a cosmopolitan species, but of this Agardh is doubtful (Till Alg. Syst., iii., p. 137), and does not include New Zealand in the list of localities from which he has authentic specimens. This may be an omission, as he recognises it in his De Alg. N.Z. mar.

30. Enteromorpha linza.

Chatham Island: Dr. Schauinsland.

31. Enteromorpha clathrata. Fl. Nov.-Zel., ii., p. 265.

Bluff, Lyall's Bay, Tauranga : Berggren. St. Clair : J. C. S. Oriental Bay, Evans Bay, Lyttelton: R. M. L.

32. Enteromorpha ramulosa (Engl. Bot., tab. 2137), J. Ag., Till Alg. Syst., iii., p. 154.

Otago Harbour: Lyall.

33. Enteromorpha acanthophora (Kuetz., Sp. Alg., p. 479.) J. Ag., Till Alg. Syst., iii., p. 157.

New Zealand: Berggren. Chatham Islands: Dr. Schauinsland.

34. Enteromorpha minima. Kuetz., Sp. Alg., p. 482. Chatham Islands: Dr. Schauinsland.

The species belonging to the subdivision Clathrata (genus Enteromorpha) are still in much confusion, and only careful collection throughout the colony is likely to enable us to group them properly.

35. Porphyra nobilis. J. Ag., Till Alg. Syst., iii., p. 62. New Zealand: Berggren. Common.

36. Porphyra columbina: J. Ag., Till Alg. Syst., iii., p. 70 (Mont., Prodr. Phyc. Ant., p. 14). Common. P. laciniata: Harv., Fl. Nov.-Zel., p. 264.

37. Bangia ciliaris. Fl. Nov.-Zel., p. 264.

"On leaves of Zostera, Cook Strait: Lyall.” This plant has not been collected recently.

38. Bangia lanuginosa. Fl. Nov.-Zel., p. 264.

On Chordaria: Colenso. Not collected recently.

I have a distinct species of Bangia, from the bridge on the Purakino River.

Sub-class PHEOPHYCEE.

Order Ectocarpaceæ.

(The New Zealand species are but little known.)

39. Ectocarpus pusillus. Fl. Nov.-Zel., p. 222.

Hawke's Bay Colenso.

40. Ectocarpus confervoides. Fl. Nov.-Zel., p. 222. Otago and Blind Bay: Lyall.

41. Ectocarpus siliculosus.

Bay of Islands: Hooker. Port Cooper and Port William : Lyall. Tauranga: Davies. Lyttelton R. M. L. Cape Kidnapper: Colenso. St. Clair, Puketeraki: J. C. S.

Order Sphacelariaceæ.

42. Stypocaulon funiculare (Sphacelaria funiculare). Fl. Nov.Zel., p. 221.

Akaroa: Hombron and Lyall. Taylor's Mistake: R. M. L. East Coast Colenso. St. Clair (fairly common): J. C. S. 43. Stypocaulon paniculatum (Sphacelaria paniculatum). Fl. Nov.-Zel., p. 221.

Everywhere abundant.

44. Sphacelaria botryoclada. Fl. Nov.-Zel., p. 221.

East Coast and Cook Strait: Lyall. St. Clair: J. C. S. Agardh doubtfully identifies some specimens collected at the Bluff as belonging to this species.

45. Anisocladus congestus, Rke. (Harvey Gibson, Journal of Botany, June, 1893).

French Pass: Dr. Schauinsland.

Order Chordariaceæ.

46. Herponema pulvinatum, J. Ag., Till Alg. Syst., i., 56 (Sphacelaria pulvinata: Fl. Nov.-Zel., 221).

In the receptacles of Carpophyllum: Colenso. St. Clair: J. C. S.

47. Herponema maculans, J. Ag., Till Alg. Syst., i., 56 (Elachista maculaformis, J. Ag., Alg. Nov.-Zel., p. 4). On Fucodium chondrophyllum: Berggren.

48. Myriocladia chorda, J. Ag., Till Alg. Syst., i., p. 18 (Chordaria sordida: Fl. Nov.-Zel. (?)). Probably common.

49. Corynophloa cystophora, J. Ag., Till Alg. Syst., i., p. 22; Harvey Gibson, Journal of Botany, June, 1893.

The Bluff, Moeraki, Kaikoura, Lyall's Bay, Bay of Islands (probably common): R. M. L. French Pass: Dr. Schauinsland.

50. Corynophlæa umbellata, J. Ag., Till Alg. Syst., i., p. 21; Harvey Gibson, Journal of Botany, June, 1893.

51. Mesogloia intestinalis. Fl. Nov.-Zel., p. 220.

Blind Bay, Auckland, Otago Harbour: Lyall.

I have a plant collected at Dunedin by Mr. J. Crosby Smith which may belong to this species, but the original identification of the genus is more than open to suspicion. 52. Leathesia difformis, L. Aresch. Phyc. Scand., p. 376. French Pass: Dr. Schauinsland.

This is probably Leathesia berkleyi (Fl. Nov.-Zel., p. 220). The plant is common throughout the Islands. I have observed it at various places between Half-moon Bay, Stewart Island, and Mongonui.

53. Scytothamnus australis. Fl. Nov -Zel., p. 219.

Everywhere plentiful on tidal rocks. The position of the genus is uncertain.

Order Encœliaceæ.

(Murray, "Introduction to Study of Seaweeds, p. 104.) 54. Asperococcus sinuosus. Fl. Nov.-Zel., p. 219. Everywhere plentiful near high-water mark.

Order Laminariaceæ.

55. Adenocystis lessoni. Fl. Nov.-Zel., p. 218; Phycological Memoirs, x. (Brit. Mus.).

An annual, everywhere abundant between the months of October and May. The best specimens, however, come from the South Island. The finest I have seen were growing on tidal flats, Wyckliffe Bay, Otago Peninsula.

56. Ecklonia richardiana. Fl. Nov.-Zel., p. 218.

This is apparently the common species of Ecklonia, wrongly referred to in Hooker's Handbook as E. radiata. Lyttelton: R. M. L. Hawke's Bay

Bay, Bay of Islands: Berggren.

57. Ecklonia radiata. Fl. Nov.-Zel., p. 217.

Colenso. Lyall's

The occurrence of this plant in New Zealand is somewhat doubtful. I have a juvenile specimen from the Bay of Islands which possibly belongs to this species, and Agardh has specimens from the Chatham Islands which he also doubtfully refers to E. radiata (De Alg. N.Z. Mar., p. 6).

58. Ecklonia exasperata. Fl. Nov.-Zel., p. 217.

New Zealand: D'Urville; Cunningham; Hooker. Island Bay, Mongonui: R. M. L.

59. Ecklonia brevipes, J. Ag., De Alg. N.Z. Mar., p. 5. Bay of Islands (very sparingly): Berggren.