. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 222 Prof. Carl Chun on the appearance when compared with the astonishingly rich and interesting material which Hackel had at his disposal in the Siphonophora captured by the ' Challenger' in the deep sea and those observed by himself in various seas, on the one hand I hope to be able to characterize some forms which may claim to be of general interest, and on the other I believe I have here and there also enlarged our knowledge of the post- embryonal development. Dealing in th
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 222 Prof. Carl Chun on the appearance when compared with the astonishingly rich and interesting material which Hackel had at his disposal in the Siphonophora captured by the ' Challenger' in the deep sea and those observed by himself in various seas, on the one hand I hope to be able to characterize some forms which may claim to be of general interest, and on the other I believe I have here and there also enlarged our knowledge of the post- embryonal development. Dealing in the first place with the lat- ter subject, I A 11/// figure here a developmen- tal stage in the postem- bryonal evo- lution of Hip- po p odiu s which may serve for the elucidation of the above re- marks upon the heteromorphous primarynec- tocalyces of the Calycophoridas. The postembryonal stages of HippopodtuSj which I had pre- viously observed from consider- able depths in the Mediterranean, I have succeeded in capturing in an unbroken series at the surface near Orotava. As a matter of course I directed my attention particularly to those rare stages in which both hetero- morphous calyces are to be ob- served still in connexion. By very careful treatment of the exceedingly delicate and readily separable calyces I was able three times to study in detail the stage figured under the micro- scope. The primary calyx (A) of Hippopodius luteus is of a general ovate form and presents. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original London, Taylor and Francis, Ltd
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