File:The Danish Ingolf-Expedition (1899) (20212015213).jpg

Title: The Danish Ingolf-Expedition
Identifier: danishingolfexpe0202ingo (find matches)
Year: 1899 (1890s)
Authors: Ingolf (Cruiser); Danish Ingolf-Expedition (1895-1896)
Subjects: Scientific expeditions; Arctic Ocean
Publisher: Copenhagen : H. Hagerup
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library

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Text Appearing Before Image:
â-E Fig. 14. n,5cm (from the foremost edge of the pelvis to the hindmost point of the appendix the length is 24cm)z); the largest breadth is found somewhat above the hindmost point of the fin-membrane, and is about 3,5cm. The ventral side is flat, covered with dermal teeth till the naked terminal part (4,3cm long, 2,icm at the broadest spot, at the base); these dermal teeth are flat, and form a complete mosaic, only a little rough to the feeling, when rubbed with the finger towards the base, and it is of cpiite the same nature as that covering the ventral side of the rest of the fin2); the whole surrounding of the clo- aca as well as the space from there to the foremost lateral corner of the fin is naked (with a few scattered groups of teeth); further- more a naked stripe stretches from the hindmost inner edge of the fin-membrane, where the fin is laid against the appendix, some way on the ventral side of the fin. Both edges as well as the whole dorsal side of the appendix are naked. The somewhat triangularly pointed terminal part shows, when seen from the dorsal side, the appendix-slit (of) situated near the lateral edge; a rather large, foliace- ous fold of the skin, which includes the skeletal piece Td2, originates from the dorsal lip of the slit; the proximal end of this fold stretches into the (half-) tube formed by the distal ends of the marginal cartilages. Accordingly there will, on both sides of this plate, be an outlet from the canal of the glandular bag in the broad part of the appendix; the real continuation, however, of this canal is here, as everywhere, situated in the terminal part laterally of the said fold (at of). If the fold is thrown back, there will in the lateral margin of the appendix-slit proper be seen a rather large M Mi'iller & Henle I.e. p. 99 state in characterising the genus: Die Anhange des Mannchen klein und weich , which, as we have seen, does not apply to adult animals, and consequently is of no value as a characteristic of the genus. -) This dental mosaic on the ventral side is quite different from that of the dorsal side, where the dermal teeth project as small thorns from the thicker skin. The words of Miiller & Henle in characterising the genus: ⢠â Schuppen konisch in erne Spitze endigend, zerstreut are then only to be applied to the dorsal side. I have not upon the whole found any mention made of the dermal teeth of the ventral side, only expressions to the effect that the abdomen is more or less smooth.
Text Appearing After Image:
Fig- 13- Fig. 13. Rhina squatina. The left appendage from the dorsal side, reduced. The part from a to b has been cut up in prolongation of the appendix-slit to open this latter so much as to get a view of the gland k. /' is part of the entrance to the pocket between Tv and v. Fig. 14. A transverse section through the same appendage after the line, marked with * x- in fig. 13. b the transverse section of the appendix-stem. D Musculus dilatator. E Musculus extensor. S Musculus compressor. k the gland, v blood-vessels. // horny filaments, r the end of the last ray.

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