. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. 6o ox THE APPENDICES GENITALES (CLASPERSi IN THE SELACHIANS. to the accompanying figures, and in these the total want of letters indicating the single parts; still later they have been described by Petri') and iloreau^). Besides short remarks on these organs are foimd in several writers of mostly systematic works. None of these descriptions seem to me to be quite serviceable. In a specimen of the total length of 76*^'" the whole length of the appendix is i8'='". The other measure
. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. 6o ox THE APPENDICES GENITALES (CLASPERSi IN THE SELACHIANS. to the accompanying figures, and in these the total want of letters indicating the single parts; still later they have been described by Petri') and iloreau^). Besides short remarks on these organs are foimd in several writers of mostly systematic works. None of these descriptions seem to me to be quite serviceable. In a specimen of the total length of 76*^'" the whole length of the appendix is i8'='". The other measures are: Length of the free part 13''"' from the fore end of the slit to the extremity of the appendix 15'^'" from the fore end of the terminal part lO'^'" Largest breadth (across the base of the terminal part). 2,7'='" The whole appendix is naked (but on the abdominal side of the glandular bag are found some scattered thorns); the shape is lengthened-clavate with a short shaft; the terminal part forms the club, and is relatively very long, broadest at the base, and tapering from thence towards the point. Only the foremost dilatable part of the , the part forming the foremost outlet from the glandular bag, is situated dorsally; from here the slit goes laterally, almost even passing to the ventral side; from this side it can be seen, but not at all from the dorsal side (contrary to the situation in the Skate). This is brought about by the fact that the dorsal lip, which only proximally is supported by skeletal parts, at the base of the terminal part overlaps the slit to such a high degree; the ventral soft lip is, when compared to that of the Skate, only very narrow. If the term- inal part is opened so much, that the interior is seen?), this latter will present an appearance, apparenth- quite different from that in the Skate; it will, however, be possible to point out quite corresponding projections and hollows: on the ventral side of the slit is
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Keywords: ., bookcentury1800, bookdecade1890, booksu, booksubjectarcticregions
