﻿COPEPODA 



225 



especially on account of the wanting- stronji; spines of tlie endopodile; the dentation of the tliird basi- 

 podite is not better developed than in related species; tlic fonrlli lobe of tiie second basipodite has 

 two short setae in addition to the spine. 



The natatory legs are scarcely different from those of the female. The fifth pair of legs is n(jl 

 unlike Wolfenden's description, but his right foot corresponds to the left one in my specimens (PJ. 

 VII figs 4f — g). The right foot (fig. 156) consists only of three segments and a short terminal tooth. 

 The left leg consists of 5 long pro.ximal segments, in addition to a fairl\- short, attenuated and hairy 

 third outer segment, which has a short terminal seta (fig. 4g). 



Yq (St. V). vSize of female from Thor St. 183 was 6-3 nun.; anterior division 5-1 mm.; urosonie 

 i'2 mm. Size of male 6'4 mm. 



The shape of the bod\- is like that of the adult female, but the lateral corner is more pointed 

 (fig. 15 f); the abdomen consists of four somites, the comparative length of which was 10, 19, 14, 8 

 and 5. The appendages, except the fifth feet, are in the young female like those of the adult females 

 (PI. VII fig. 4h), this pair is even less developed than that of the adult, as seen in the drawing; in the 

 male each leg consists of four segments, and the left leg is con.siderably longer than the right one; about 

 the arrangement of hairs and setae I refer to fig. 15 g. 



Occurrence. The Thor has in Denmark Strait once gathered this species viz: 



'9/6 1904 St. 152 65-^00 L. N. 28°io L. W. Yt. 200 M. Wire i i% 



In the Atlantic, south of Iceland: 



'°/7 1904 St. 180 6i°34 Iv. N. i9°o5 L. W. Yt. 1800 M. Wire if?, i f d*. 



"/^ 1904 St. 183 6i°30 L. N. i7°o8 L. W. Yt. 1800 M. Wire 31 f?, 6 fc?, 3 y? |V), 4 yd" (V). 



In the Iceland-Fceroe Channel: 



"/s 1904 St. 78 6i°o7 L. N. 9°3o L. W. 3 f ?. 



In the Atlantic, south west of the P'jeroes: 



«/6 1905 St. 72 57^52 L. N. 9°53 L. W. Yt. 1500 \\. Wire 4 f?. 



Distribution. According to Farran "this species is of frequent occmrencc in deep-water tow- 

 nettings off the west coast of Ireland", at depths of from 330 to 1150 fathoms. I'.y the (iauss it was 

 taken 9/,„ near the Cape Verde Islands, and ■-, „ it was taken about 35° L. S. 0-5- L. K. 



Remarks. In spite of minor differences I do not doubt that this species is identical with Cor- 

 niicalamis iihigiiits Wolf.; Wolfenden refers Thompson's .Vc. r'/zr/zAv to a different species on account 

 of a wanting frontal spine; as Thompson's description of a young male is .so very imperfect, I prefer 

 to follow Farran and Pearson. 



72. Onchocalanus magnus Wolfenden. 

 (PI. VII figs 5 a g; PI. \'III figs 16 a— d). 



1906? Xantliocalunus iiKiKnus n. .sp. Wolfen.lLn. pp. 32—33, : igir? OiiclioiMlaiius fn.ui'Uis 11. sp Wolfcn.lon. pp. 276 



pi. X. -277. 



rgoS? — — Wolf. Wolfcn.kii , ).. 37, pi. nee. — iiKijiinis Wolf. Wolfenden. pp. 275 



VII fij;s 1—9. , -^''^' P' ^^^- 



TIk* inj;olf-l:xpc.iiiioii. III. (. ' 



