. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. ON THE APPENDICES GENITALES (CLASPERS) IN THE SELACHIANS. 57 forms a great many transverse, soft, vascular folds (see fig. 24 in the text, />/). If the terminal part is more opened, the walls of the appendix-slit are seen; they are very curiously formed, covered with a mucous membrane, and their folds and pockets supported In- different skeletal pieces. Besides what has been mentioned, we find on the ventral side a firm fold with a porous edge, da, reaching into the proximal part of the slit, and a process (7r'2), with a
. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. ON THE APPENDICES GENITALES (CLASPERS) IN THE SELACHIANS. 57 forms a great many transverse, soft, vascular folds (see fig. 24 in the text, />/). If the terminal part is more opened, the walls of the appendix-slit are seen; they are very curiously formed, covered with a mucous membrane, and their folds and pockets supported In- different skeletal pieces. Besides what has been mentioned, we find on the ventral side a firm fold with a porous edge, da, reaching into the proximal part of the slit, and a process (7r'2), with a loose, soft covering, and supported by skeleton; laterally of this process is found behind a deep recess or pocket, Lv. On the dorsal side are seen two recesses, the foremost one (Ld) very deep, and separated from the appendix-slit by a lamella supported by skeleton; the hindmost one (Ld') is less deep; finally is seen a process (Tzi), enclosed in a soft membrane, which process is laid against the above mentioned one on the ventral side of the slit. The real continuation of the appendix-slit runs between these two processes, as indicated by the sound in fig. 241). The skeleton. Between the basale and the appendix- stem are found two pieces, b1, b2, the latter longer than the former; bt bears the six hindmost rays, b2, as usual, none; with the dorsal and lateral edge of bz is connected a long, plate-shaped /?, distally articulating with the appendix-stem b almost beside the articulation between this latter and b2. The appendix-stem is long, about twice as long as the basale -\- bl 4- b2; behind it becomes by and by dorso-ventrally flattened, especially in the terminal part, where its outer end is quite flattened, thin, and rounded. As is usually the case, the calcification ceases in the terminal part; in the long part corres- ponding to the style is however found on the medial edge a strongly calcified region projecting in a somewhat bump-like manner (x in fig. 45, 47). The marg
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectscientificexpedition
