. Copepoda. Calanoida; Copepoda. 196 COPEPODA inner and an outer longitudinal series were found (PL VII fig. o,d); the arrangement of hairs between and behind the serrulae was not studied in details. In the middle, between the labial lobes, a large median group of setae was found, which on each lobe is continued into two lateral series placed closely to each other; more laterally, well separated from this system, a lateral row of shorter setae, starting from a basal group, was observed. The intestinal tract is anteriorly produced into a rather slender rostral coecal sac; posteriorly the wide s
. Copepoda. Calanoida; Copepoda. 196 COPEPODA inner and an outer longitudinal series were found (PL VII fig. o,d); the arrangement of hairs between and behind the serrulae was not studied in details. In the middle, between the labial lobes, a large median group of setae was found, which on each lobe is continued into two lateral series placed closely to each other; more laterally, well separated from this system, a lateral row of shorter setae, starting from a basal group, was observed. The intestinal tract is anteriorly produced into a rather slender rostral coecal sac; posteriorly the wide stomach is attenuated, and is, somewhat in front of the abdomen, continued through a slight curvature into the straight intestine proper. fo*. Size of specimen from Thor St. 180 was 3-84:11111.; anterior division 2-65; urosome 1-19111111. The body is somewhat more slender than in the female, with rounded lateral corners of the well marked short fifth somite; the rostral filaments are scarcely different. The urosome is almost half as long as the anterior division, and the comparative length of its somites is 23, 40, 34, 44 and 4 (PI. VIII fig. 8 c). The antennulae scarcely extend to the end of the furca; the number of free segments is scarcely different from that found in S. magnus, but the seg- ments 13 and 15 are partly fused with the preceding ones, as the articular line is wanting behind; the measurements and the appendages are very much like those of S. globiceps. The antennae and mandi- bulae are scarcely different from those of S. magnus. The maxillulae are fairly well developed; the Le possesses 9 setae; the Li I has at least 8 rather delicate setae, the Li II has 2 setae and the Li III has 4 setae; the third basipodite has 4 setae; and the Ri 2 -j- 5 setae; the exopodite has as in the female 8 setae. The maxillae are fairly developed, with 4 setae in each of the four proximal lobes; the lobe V has one spine somewhat stronger than the corresponding one of the lobe IV; the
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Keywords: ., bookauthorhansenhj, bookcentury1900, bookdecade1910, bookyear1915
