. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. 4o ON THE APPENDICES GENITALES (CLASPERS) IN THE SELACHIANS. - R,l Rv— Fig. II. of the skeleton, but the following will, nothwithstanding it defectiveness, show, that the structure of the skeleton is like that of Lamna. In the museum of Copenhagen is found a pair of dried skeletons of these organs that have been got from a stuffed specimen (from California) of the length of gm 15°™ (2yI/2 Danish feet). By long soaking the dried softer cartilaginous parts swelled so much that upon the whole they might be thought to approach t
. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. 4o ON THE APPENDICES GENITALES (CLASPERS) IN THE SELACHIANS. - R,l Rv— Fig. II. of the skeleton, but the following will, nothwithstanding it defectiveness, show, that the structure of the skeleton is like that of Lamna. In the museum of Copenhagen is found a pair of dried skeletons of these organs that have been got from a stuffed specimen (from California) of the length of gm 15°™ (2yI/2 Danish feet). By long soaking the dried softer cartilaginous parts swelled so much that upon the whole they might be thought to approach to the shape of the fresh skeleton. Of the parts of the fin skeleton proper is only found a little, somewhat triangular piece, situated proximally at the dorsal end of the appendix-stem; it must be the piece /?, which is accordingly (as presumably also the piece 6J quite small as in Lamna (and the Scylliidse)'). The appendix-skeleton has a length of about im2); it may be doubted if all the terminal pieces have been preserved, but the principal features may be seen distinctly enough. The appendix-stem is calcified (the proximal end, however, not very much); the soft style is very long and rather broad, and reaches to the out- ermost end of the terminal part (comp. Lamna). The marginal cartilages are developed almost as in Lamna, that is to say, they join dorsally without forming a firm suture, the edge of the ventral one overlapping that of the dorsal one 3). The number of terminal pieces (in the specimen in hand) is 3. Td is short, not reaching to the end of the style; it is calcified for the greater part of its length, and has on the dorsal surface a furrow or groove /, wide before, where it passes into the large appendix- slit, while behind it becomes a narrow slit following the piece to the end+). Tv is only calcified anteriorly, otherwise it is a soft cartilage following the style just to the end. T,. Fig. 12. Fig. 11. Selachus maximus. The skeleton of the right appenda
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectscientificexpedition
