Mitteilungen aus der Zoologischen Station zu Neapel, 4권


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179 페이지 - Infundibulnm hinaus. Die Hypophysis von Petromyzon aber ist beträchtlich länger, denn , wie schon angedeutet, ist die ganze v[on den Autoren als Nasengang, blinder Nasensack oder Spritzsack beschriebene Bildung nichts Anderes als die vergrößerte Hypophysis.
175 페이지 - I have not myself completely followed the development of the pituitary body in Petromyzon, but I have observed a slight diverticulum of the stomodaeum, which I believe gives origin to it. Further details are in any case required before we can admit so great a divergence from the normal development as is indicated by SCOTT'S Statements.
56 페이지 - Quant aux embryons infusoriformes, j'en ai conservé parfaitement vivants dans un verre de montre pendant deux, trois, quatre et même cinq jours, sans qu'ils aient subi , après ce séjour dans l'eau de mer, la moindre altération. Comme je n'ai jamais trouvé dans les reins des Céphalopodes aucune forme de transition entre un embryon infusoriforme et un Dicyema , j'en conclus que les Dicyema ne se multiplient, dans les corps spongieux du Céphalopode infesté, que par les embryons vermilbrmes.
449 페이지 - Jeffreys, Norman, M'Intosh and Walter, Last Report on dredging among the Shetland Isles (Report of the British Association for the Advancement of Science for 1868).
79 페이지 - Nematogenic period, any odd number from 3 — 17 inclusive. (Of. p. 39.) 10. The Infusorigen is a group of cells consisting, at one period (fig. 109), of a peripheral layer of cells partially enveloping a large central cell. Its development from a single cell by a process of cleavage, and the epibolic growth of its peripheral layer, give ground for thinking that the Infusorigen represents an individual, comparable with the Gastrula of a vermiform embryo. The peripheral layer may be compared to the...
514 페이지 - renders it probable that they are not identical with the segments of a Chaetopod«. The larva differs from the characteristic Chaetopod larva in the following particulars. 1 ) The alimentary canal is not curved, nor divided into three regions, neither mouth nor anus is present ; 2) the body cavity is but very slightly developed, it is not traversed by muscular strands, there is no connection between the nerve ganglion and the alimentary canal; 3) there is no provisional renal organ.
78 페이지 - ... or as the result of conditions that differ in some unknown respects fecundation'/ food:' position in a cycle of generations'/ seasonal influences'?) Cf. p. 61. 7. There is a remarkable correspondence between the age of the host and the reproductive phenomena of the parasite. Nematogenic individuals are abundantly represented in young Cephalopods ip.
289 페이지 - Zeitschr. f. wiss. Zool. Bd. 17. p. 566. 20. 1869. Carter, Descriptive Account of four Subspherous Sponges Arabian and British , with General Observations.
56 페이지 - Dicycma ne se multiplient, dans les corps spongieux du Céphalopode infesté, que par les embryons vermiformes. Mais comment l'espèce se transporte-t-elle d'un Céphalopode à un autre? Puisque les embryons vermiformes ne peuvent vivre dans l'eau de mer, il est clair qu'ils [ne) peuvent servir à propager l'infection parasitaire d'un Céphalopode à un autre.
69 페이지 - LEUCKART (43, p. 95 — -96) holds that both classes of parasites are closely related , and that they can be included among the Trematodes.

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