. Copepoda. Calanoida; Copepoda. COPEPODA 95 Description. f. Size of specimen from Thor St. 183 4-05 mm.; anterior division 3-13 mm., tvrosome 0-92 mm. Sars' specimens measured 4-8111111., Wolfenden's specimens 4-65 mm. and Far- ran's specimens measured 3-9—4-5. The shape of the body is practically as figured by Sars, except for the distinctly longer lateral spines of the thorax, which are directed downwards and backwards. The rostrum is not undivided as stated by Sars, but is, as shown in fig. 7 a (PI. II), distinctly bifurcate terminally. On each side of the vulva a somewhat triangular plate
. Copepoda. Calanoida; Copepoda. COPEPODA 95 Description. f. Size of specimen from Thor St. 183 4-05 mm.; anterior division 3-13 mm., tvrosome 0-92 mm. Sars' specimens measured 4-8111111., Wolfenden's specimens 4-65 mm. and Far- ran's specimens measured 3-9—4-5. The shape of the body is practically as figured by Sars, except for the distinctly longer lateral spines of the thorax, which are directed downwards and backwards. The rostrum is not undivided as stated by Sars, but is, as shown in fig. 7 a (PI. II), distinctly bifurcate terminally. On each side of the vulva a somewhat triangular plate was found, and a short receptaculum seminis was observed (fig. 7 b); the structure of the genital apparatus was rather complicated, but was not examined in the details; figs 7 b—c will give an impres- sion of its structure. The furcal rami are 1-4 as long as wide, and a little shorter than the anal somite. The ci7itenmdae do not reach to the end of the anal somite, but only somewhat beyond the end of the geni- tal somite. The segment 2 is ri as long as 8 oj 9, which is scarcely ri as long as segment 13, and 1*2 shorter than segment 20; segment 19 is a little longer than 20 and 22 which are of almost equal length, and longer than segment 2. The appendages differ from those of G. tenuispinus by the presence of a Sp. in segment 13. The antennae have the Re about 1/5 as long as Ri, but are scarcely different in other respects. The maxil- lulae differ from those of G. teniiispinns by Iyi 3, which only bears 4 setae in addition to the sensory lobe, and by the Re III, which possesses 6 Sa + * Sp. The maxillae (fig. 7 d) have the exterior margin less strongly convex than the preceding species; the Sp. 2 of the first lobe is three times as long as the lobe itself, and the Sp. of lobe IV is stronger as well as longer than the corresponding Sp of lobe V. The maxillipes differs from those of the preceding species by a rounded lamelli-form protuberance on the exterior surface of the se
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Keywords: ., bookauthorhansenhj, bookcentury1900, bookdecade1910, bookyear1915
