. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. COPKPODA 109 Description, f?. Size of speciiiieii fnmi Thor vSl. 1S3 was 5-1 nun.; anterior division 4 nnn.; nrosome I'l nnn. Sars' specimens measured 4-85 mm., Farran's specimens 5-1, .Scott's 54 and Wo If en den's 37â4 ram. The frontal spine, which has a triani;nlar base, lias as seen in fi<j. 5 a the tip directed forwards and upwards. The distance between the base of the frontal spine and the frontal , which are placed on a small j^rocess, is almost straight with a low crest.
. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. COPKPODA 109 Description, f?. Size of speciiiieii fnmi Thor vSl. 1S3 was 5-1 nun.; anterior division 4 nnn.; nrosome I'l nnn. Sars' specimens measured 4-85 mm., Farran's specimens 5-1, .Scott's 54 and Wo If en den's 37â4 ram. The frontal spine, which has a triani;nlar base, lias as seen in fi<j. 5 a the tip directed forwards and upwards. The distance between the base of the frontal spine and the frontal , which are placed on a small j^rocess, is almost straight with a low crest. The rostrum is terminally bifurcate. The shape of the body is scarcely different from Farran's figure; the anterior division is 2-5 as long as wide and 3-6 as long as the urosome. The genital somite (fig. 5 b), which is distinctly 1-4 as wide as long and i-i as deep as long, has a fairly prominent receptaculum semiuis. The relative length of the abdominal somites and the furcal rami is the following: 42, 23, 19, 18 and 21; the fnrcal rami are I'l as long as wide. The (intiiiiiac. which have the Re about 1-3 as long as the Ri, ha\e the Ri I almost twice as long as Re II, which is 17 as long as Re I, and a little shorter than Re \'II. The Re I has a single terminal seta on a conical protuberance, and the Re II has 3 setae, of which the basal is the longest and like the median one is placed on small protuberances. The inaxiUulac possess 5 setae on Li II; the Li I has no spinules posteriorly and the Li III has none ante- riorl}-. The third basipodite of the 'ds is 3 times as long as the eudoijodite and i'3 as long as the first and second basipodites combined; the lamina of the second basipodite (text-fig. 26 b), which is folded in a characteristic way, is in the whole length faste- ned to the anterior surface of the segment; the inner margin of the third ba,sipodite is basally not straight as shown in Farran's figure, but slightly convex as figured by Scott. The first
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Keywords: ., bookcentury1800, bookdecade1890, booksu, booksubjectarcticregions
