. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. 64 ON THE APPENDICES GENITALES (CLASPERS) IN THE SELACHIANS. Two pairs of ventrals with fully developed appendices, now before me (unfortunately I cannot give the total length of the animals) show the following measures: Length of the appendix iocm - part free of the fin 6,2cm - terminal part 4,6—5™ Breadth of the 2,7cm at the broadest spot - basal part i,6cm A dried specimen of a length of 39"", a breadth of 24cm shows full)- developed appendices, 8cm long, and 2,2cm broad across the terminal parts; in another spe
. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. 64 ON THE APPENDICES GENITALES (CLASPERS) IN THE SELACHIANS. Two pairs of ventrals with fully developed appendices, now before me (unfortunately I cannot give the total length of the animals) show the following measures: Length of the appendix iocm - part free of the fin 6,2cm - terminal part 4,6—5™ Breadth of the 2,7cm at the broadest spot - basal part i,6cm A dried specimen of a length of 39"", a breadth of 24cm shows full)- developed appendices, 8cm long, and 2,2cm broad across the terminal parts; in another specimen (in spirit) 43cm long, and 2o,cm broad the appendices are only 6,5cm long, the terminal part abt. 4cni long, 2,icm broad; here thev are not yet fully developed though it was to be expected judging from the size of the animal. Facts as these, that rather grown individuals have rather undeveloped appendices, I have ofteuer seen, for inst. in Acanthias. The appendix is naked, much more clumsy than in the preceding species, flattened, somewhat rounded on the dorsal side, the contour is clumsily clubshaped; the club is formed by the terminal part constituting more than half the length of the part to be seen from the back. The appendix-slit runs from the fore- most dorsal opening laterally, so that it cannot be seen from the dorsal side except in the hindmost end of the terminal part, where the dorsal lip, as it were, retires; the dorsal lip, throughout the terminal part, is supported by inner skeletal parts reaching to its edge, while the soft membrane of the ventral lip as a broad wall stretches past its skeletal part (7"1,), and is laid - in a similar manner as in the Skate - - dorsally against the upper lip; from the hinder, lateral edge of this latter a naked spine projects. If the soft, ventral dermal lip vl is thrown back, an elevated, long, bowshaped, cutting edge of the skeletal piece 7", is laid bare (fig. 26 in the text, to the right of 61). If the term
Size: 1217px × 2053px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectscientificexpedition
