. Copepoda. Calanoida; Copepoda. COPEPODA 181 "/7 1904 St. 183 6i°30 Iv. N. i7°o8 Iy. W. Yt. 1800 M. Wire 37 f? (3 with egg-balls, 2 with sperm.), 8 f<?, 8y? (V), 4y<? (V), iy? (IV). 2V5 1904 St. 104 62°47 k. N- I5°°3 L. W. Yt. 1500 M. Wire 4 f ?. This species has previously been gathered off the west coast of Ireland "at depths of from 700 to 1000 fathoms" at five stations "but very few specimens were found on each occasion". Wol fen den's specimens, which on account of the different shape of the genital somite (PI. XXXV fig. 3) cannot with security be referred


. Copepoda. Calanoida; Copepoda. COPEPODA 181 "/7 1904 St. 183 6i°30 Iv. N. i7°o8 Iy. W. Yt. 1800 M. Wire 37 f? (3 with egg-balls, 2 with sperm.), 8 f<?, 8y? (V), 4y<? (V), iy? (IV). 2V5 1904 St. 104 62°47 k. N- I5°°3 L. W. Yt. 1500 M. Wire 4 f ?. This species has previously been gathered off the west coast of Ireland "at depths of from 700 to 1000 fathoms" at five stations "but very few specimens were found on each occasion". Wol fen den's specimens, which on account of the different shape of the genital somite (PI. XXXV fig. 3) cannot with security be referred to the same species, were gathered under the equator ca. 200 Iv. W. (depth 3000 m.) 53. Euchaete Hansenii n. sp. (Text-figs 52 a—b.) Description. Size: 8-9 mm.; anterior division 6-5 mm.; urosome 2-4 mm. The shape of the body is like that of E. norvegica. The anterior division is 27 as long as the urosome, which is only a little longer than the width of the thorax. The proportional length of the abdominal somites is 45, 26, 25. The genital somite is, laterally, more suddenly convex than in E. Sarsi, and, as in this, the greatest width lies in the proximal part; the genital somite is 13 as long as wide, but only 17 as long as deep. The lateral conical process which characterises E. barbata and Far rani, is wanting. In lateral view the geni- tal protuberance differs distinctly from that of E. Sarsi by the straight, not concave, anterior process, and by a fairly distinct process behind and above the second one, sometimes indicated in E. Sarsi, which, as usu- ally, represents the posterior border of the vulva. The ventral surface is quite different; the triangular plate in front is divided into three processes; the transverse plate has posteriorly a median incision, on each side of which are two lobes (text-figs 52 a—b). — The antennulae scarcely extend to the end of the cephalo-thorax; the appendages are scarcely different from those of E. norvegica; the segment 19 is r


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Keywords: ., bookauthorhansenhj, bookcentury1900, bookdecade1910, bookyear1915