. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. 38 ON THE APPENDICES GENITALES (CLASPERS) IN THE SELACHIANS. fore the terminal part, is seen a small opening (/ in the fig. 10 in the text) of a length of i1 2cm; this opening leads into a deep, pocketlike invagination of the skin, lined with a soft continuation of this, similar to a mucous membrane. On the dorsal side of the terminal part, at the lateral base, a polished skeletal piece projects uncovered by the skin and like a thorn (T). The terminal part is easily bent ventrallv; if bent in that way, the thorn, as in many
. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. 38 ON THE APPENDICES GENITALES (CLASPERS) IN THE SELACHIANS. fore the terminal part, is seen a small opening (/ in the fig. 10 in the text) of a length of i1 2cm; this opening leads into a deep, pocketlike invagination of the skin, lined with a soft continuation of this, similar to a mucous membrane. On the dorsal side of the terminal part, at the lateral base, a polished skeletal piece projects uncovered by the skin and like a thorn (T). The terminal part is easily bent ventrallv; if bent in that way, the thorn, as in many other Sharks, will rise mechanically, and stand out horizontally; it will immediately lie down again, when the terminal part is let loose. A dermal fold supported by the skeletal piece Td, is prolonged forward into the tube formed by the marginal cartilao-es in such a manner, that this tube gets two outlets, one on each side of the lamella concerned; but the appendix-slit proper is situated laterally of this piece (a/ in fig. 10). The skeleton. Between the basale and the skeleton of the appendix is found (almost as in the Scylliidse) one very small piece 6Z, highest on the medial surface, and otherwise quite low, that is to say, wedge-shaped; in connection with the distal end of the basale and the proximal end of the appendix-stem it bears the hindmost ray, which at the base is rather broad. The piece ft is pretty well developed, and, as is usual in Sharks, connects the basale with the appendix-stem. The appendix-stem is very long, twice as long as the basale + bs\ proximally it is only a little calcified (comp. Selackus), but else it is firmlv calcified in the surface until the terminal part, where it forms a very long style, reaching to the hindmost end of the terminal part; this style for the hindmost two third parts is calcified in the surface; its soft basal part is situated immediately under the above mentioned pocket â ; the distal end of the Musculus dilatator passes i
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectscientificexpedition
