. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. COPEPODA 193 Description, f ?. Size of specimens from Ingolf St. 105 was 2-23 mm; anterior division i-66 mm.; urosome 057 mm. Sars' specimen measured scarcely 2 mm.; Farran's 2'3 â2-5 mm. The shape of the body is scarcely different from Sars' figures; the appendages, as far as they were examined in the single mutilated specimen, were scarceh- different; posteriorly, near the end of the second outer segment of tlie first pair of legs, a transverse row of short spines was found. The fijtii pair of legs has on the left side the
. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. COPEPODA 193 Description, f ?. Size of specimens from Ingolf St. 105 was 2-23 mm; anterior division i-66 mm.; urosome 057 mm. Sars' specimen measured scarcely 2 mm.; Farran's 2'3 â2-5 mm. The shape of the body is scarcely different from Sars' figures; the appendages, as far as they were examined in the single mutilated specimen, were scarceh- different; posteriorly, near the end of the second outer segment of tlie first pair of legs, a transverse row of short spines was found. The fijtii pair of legs has on the left side the Se standing opposite the Si, as in ' figure, but on the right side it stands somewhat more distally. fc?. Size of specimen from vSt. 82 Thor was 2-5 mm.; anterior division 1-65 mm.; urosome 0-85 mm. A male from St. 183 measured 3-3 mm. The shape of the body is rather slender, very much like that of S. viagnus. The distinction between the head and first tergite is indicated dorsally, and the fifth thoracic tergite, which is rounded, is well marked out. The rostruiii consists of a basal bifurcate part, which is prolonged into a thin rather stiff filament on each side; the outline is, above the rostrum, at least in the single, somewhat mutilated specimen, somewhat concave. The abdomen (fig. 7 aj is distinctly half as long as the anterior division, and the comparative length of the somites is 7, 43, 27, 30, 4, and 10 for the furca, which is about 1-3 as long as wide. The antenmilac, which were broken, have the proximal segments like those of A^. iiiagiiiis. The <nitrnnac are scarcely different from those of the female. The manducator\- part of the mandibulac is rather slender; the third basipodite is very short and robust; it possesses, somewhat beyond the middle, a single short hair and, more terminally, at least one quite rudi- mentary one. The ii/axill/ilac are well developed and in most respects like those of the female. The long well developed Li I has 10 short setae
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectscienti, bookyear1915
