. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. COPEPODA 139 fj". Size of specimen from Tlior St. 183 was 5-35 mm.; anterior 4-08 mm.; urosome 1-27. The rostrum and the frontal keel are scarcely different from those of the adult female. The body is more slender, and the lateral corners are rounded and symmetrical. The abdomen is scarcely different from that of the two preceding species. The antennulae extend about to the end of the third abdominal somite, and are also in other respects similar to those of the preceding species. The aniennae are practically like those
. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. COPEPODA 139 fj". Size of specimen from Tlior St. 183 was 5-35 mm.; anterior 4-08 mm.; urosome 1-27. The rostrum and the frontal keel are scarcely different from those of the adult female. The body is more slender, and the lateral corners are rounded and symmetrical. The abdomen is scarcely different from that of the two preceding species. The antennulae extend about to the end of the third abdominal somite, and are also in other respects similar to those of the preceding species. The aniennae are practically like those of the female, but in the Re I a small conical process was observed medially, apparently bearing a delicate seta. The manducatory portion of the viandibtilae possesses posteriorly one or two rudimentary teeth. The maxilhilac have short soft appendages in L,i i—2; the Le has 2 short and 6 long setae, and the 10 setae of the Re are as usual in the male not shortest in the middle; the Li 3 has 3 setae, and the Basp. as well as Ri have a similar number of setae as in the fe- male, but they are softer. The maxillae and maxillipcds are scarcely different from those of the preceding species. The Jirst pair of legs has as usual a well developed articulation between Re I—II, and the Se Re II is compara- tively short; the pes II—IV are scarcely different from those of the females. The right leg of the fifth pair has the basal seg- ments like those of the preceding species (cf. fig. 3 b PI. V). The right endopodite is in general shape very much like that of U. minor (figs 9 a—b PI. IV, cf. fig. 3e PL V); it is terminally somewhat curved and has here lamellar margins, turned over to establish a gutter-shaped excavation facing forwards and outwards. Outwards and backwards a well developed conical tooth is found near the base, and beyond this, removed one third of the length of the segment from the base, another striated tooth or elevation is found, which „ ^,, , . , ^r • * •
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectscienti, bookyear1915
