. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. VNNEUDS. I. 13. by the body about 5 mm.; then the bod) tapers gradually towards the tip of the hindpart. The first parapodium is elytron-carrying and, as far as it was possible to state, the arrangement of the elytra is the usual. The cephalic lobe (PI. IV, figs. 2,5), the shape of which is broad with embossing sides, is of the L,epidonote type; frontal prominences are lacking and the side-halves of the head are continued directly in the paired tentacles. Eyes are lacking. All appendages are exceedingly short and, rela- tive
. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. VNNEUDS. I. 13. by the body about 5 mm.; then the bod) tapers gradually towards the tip of the hindpart. The first parapodium is elytron-carrying and, as far as it was possible to state, the arrangement of the elytra is the usual. The cephalic lobe (PI. IV, figs. 2,5), the shape of which is broad with embossing sides, is of the L,epidonote type; frontal prominences are lacking and the side-halves of the head are continued directly in the paired tentacles. Eyes are lacking. All appendages are exceedingly short and, rela- tivel) to their length, rather thick. The impaired tentacle reaches c. 1 nun. in length, the paired tentacles are inconspicuously shorter. The tentacles taper towards the apex and are provided with a short terminal filament. The palps are quite peculiar; they are represented by a whartshaped prominence on each side, in length about the half of that of the tentacles; their tip is bluntly rounded and there is no trace of terminal filament. All in all they are quite different from what we are accustomed to see in the Polynoids Unfortunately the pharynx is not protruded to such a degree that it is possible to state the presence of jaws, and as only one specimen is at my disposal I have considered it not to be convenient to undertake any dissection. In the middle-line of the dorsum is found a row of warty prominences, one . „ on each segment, and at the base of each foot is found a similar prominence on the dorsal side, so that the dorsum shows three longitudinal rows of warty prominences. (PI. IV, fig. 2). The parapodium is conspicuously reduced, mainly the dorsal branch, which carries no ; only a relatively weak acicle is found in its interior (fig. 18). The ventral setae are short and clumsy, with a short broad end-blade terminating in a strong curved tip and entirely devoid of spines and hairs. Resides the acicle only three or four such bristles are found in the neural part
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectscientificexpedition
