Archive image from page 78 of The Danish Ingolf-expedition (1898). The Danish Ingolf-expedition danishingolfexpe1517dani Year: 1898 HYDROIDA II 73 of the hydrotheca. All the sareothecae are adcaulinally split, and have a slightly dentate margin. The hvdrotheca is broad, and lias a very slightly curved opening margin; its basal part has a somewhat thicker wall than the distal two-thirds, and the boundary between the two portions is apparent as a fine line abcladially directed obliquely forward towards the opening; hydrothecal ribs or septa lacking. The internodinm shows two to four inner ribs
Archive image from page 78 of The Danish Ingolf-expedition (1898). The Danish Ingolf-expedition danishingolfexpe1517dani Year: 1898 HYDROIDA II 73 of the hydrotheca. All the sareothecae are adcaulinally split, and have a slightly dentate margin. The hvdrotheca is broad, and lias a very slightly curved opening margin; its basal part has a somewhat thicker wall than the distal two-thirds, and the boundary between the two portions is apparent as a fine line abcladially directed obliquely forward towards the opening; hydrothecal ribs or septa lacking. The internodinm shows two to four inner ribs at the adcladial side of the hydrotheca; one such, which is three-branched, and markedly prominent, forms a boundary between the proximal sarcotheca and the internodinm. The gonothecse' are situate on the stem at the apophyses. The young gonotheca shows distally a peculiar oblique termination, the one side of which gradually projects further forward, suggesting that the fully developed gonotheca would be furnished with a roof-like upper lip. Phylactogonia lacking. Material: 'Ingolf vSt. 127 66°33' N., 20°05' W., depth 44 fathoms, 5,6° Iceland: Tistil fjord, 66°43' N., i4°53' W., — 78 — Ritchie (1912 p. 226) refers this species to Cladocarpus, but with a query, as he did not find gonangia in his specimens. These agree entirely with the present colonies (fig. XXXYI| which, from the comparatively short, broad hydrothecae, can hardly be confused with other species from northern waters. The col- onies in question show that the species should be placed under Halicornaria. The gonangia occur in several stages of development, but none fully developed. The series of phases represented in the colonies investigated are entirely parallel to what we find in Cladocarpus integer (G. O. Sars); the oldest stage also seems to show that it developes, as does the species mentioned, an 'upper lip' which will dome out Fig XXXVI. Halicornaria campanulata from 'In- more or less over the openi
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Keywords: 1890, 1898, archive, book, bookauthor, bookdecade, bookpublisher, booksponsor, booksubject, bookyear, copenhagen_h_hagerup, danish_ingolf_expedition_1895_1896, drawing, historical, history, hydrography, illustration, image, ingolf_ship_, marine_animals, page, picture, print, reference, scientific_expeditions, smithsonian_libraries, vintage, wandel_c_f_carl_frederik_1843_1930, zimmermann_a_albrecht_b_1860
