. Copepoda. Calanoida; Copepoda. i g8 COPEPODA 62. Scaphocalanus validus Farran. (PI. VII figs 11 aâb; text-figs 62 aâf.) 1908. Scolecithrix valida n. sp. Farran, pp. 55â57, pi. V figs 14â15, pi. VI fig. 7. Description, f £. Size of specimen from Thor St. 183 was 3-95 mm.; anterior division 3-1 mm.; urosome 0-85 mm. Farran's specimens measured 3-8â3-95111111. The body is more slender, and the head less suddenly raised in lateral view than in S. obtusi- frons, but more distinctly so thau in S. globiceps (text-figs 62 aâb). The rostrum is most like that of the former species, with the basal par
. Copepoda. Calanoida; Copepoda. i g8 COPEPODA 62. Scaphocalanus validus Farran. (PI. VII figs 11 aâb; text-figs 62 aâf.) 1908. Scolecithrix valida n. sp. Farran, pp. 55â57, pi. V figs 14â15, pi. VI fig. 7. Description, f £. Size of specimen from Thor St. 183 was 3-95 mm.; anterior division 3-1 mm.; urosome 0-85 mm. Farran's specimens measured 3-8â3-95111111. The body is more slender, and the head less suddenly raised in lateral view than in S. obtusi- frons, but more distinctly so thau in S. globiceps (text-figs 62 aâb). The rostrum is most like that of the former species, with the basal part less enlarged and with fairly long, apparently undivided, filaments. The lateral corners are slightly produced and rounded (text-fig. 62 c). The genital somite is better produced below, and its receptaculum seminis appears more slender than in the preceding species; the comparative length between the abdominal somites and the furcal rami is 45, 28, 25, 9 and 17; the furcal rami are 1-5 as long as wide; along the hinder border of somites IIâIV a marginal seam with delicate serrations is observed. The antennulae do not reach the end of the furca; the segments 24â25 are fairly well separated; "^Esthetasken" are found in segments 8^9, 12, 14 and 19; the segment 10 has a distinct seta, and a proximal seta is found in segments 12 â 14 18, and sometimes in segment 15, but never in segment 17; the Sp. of segment 24 is somewhat longer than segment 25. The segment .19 is distinctly r2 as long as segments 8^9 and 15, which are of almost equal length; segment 16 is i*a. Text-fig. 62. Scaphocalanus validus Farr. fO a. Head X 33- t>. Rostrum from the right >( 59- c. Genital somite x 33. d. Pes II sin. in anterior as long as 15. The third basipodite of the viandibulae seems view X59- e. Pes III sin. X 59- *â St. pes II t j , seta£ medially; iu other reSpects the mandi- sin. X 150. : J ' l bulae as well as the antennae are like those of the preceding species. T
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Keywords: ., bookauthorhansenhj, bookcentury1900, bookdecade1910, bookyear1915
