﻿COPEPODA 



H5 



Distribution. According to Farran "this species is of frequent occurrence in the X. E. Atlantic, 

 having been taken on every station at deptlis of from 300 to 1000 fathoms". It has been recorded 

 from tlie Fieroe channel, from the Mid Atlantic and from the vSonth Atlantic as far south as 35° L. S. 

 It has been recorded from the Gulf of California, from the Pacific 35^ 1^. N. 125° L. W. as well as from 

 the Malay Archipelago. 



Remarks. In .spite of the small differences enumerated between my specimens and Giesbrecht's 

 description I think the Atlantic and the Pacific forms belong to the same species. Different authors, f. 

 inst. Pearson and A. Scott, have identified Wolfenden's Exc/i. carindfa \\\\.\\ this species; they are 

 ccrtainlv wrong as far as the young male described in 1902 is concerned; on account of the frontal crest 

 like that of E. galiuifa. the rounded lateral corners of the thora.x and the left endopodite of the fifth 

 pair of legs "like small stump" there is some reason to identify it with, f. inst, Enchirclln intermedia 

 (cf. p. 127). The position of the adidt female is somewhat uncertain; Wolfenden regards it (p. 236) as a 

 true E/icItirella in spite of the missing spines of the second basipodite of the fourth pair of legs. It 

 is with some reluctance that I have referred the described male to this species; at present it is impcs- 

 sible to tell its certain position. The descriptions of Ester ly and Scott are too short for a certain 

 identification. 



41. Chirudina pustulifera G. O. Sars. 



(PI. V figs 6 a— d; te.xt-fig. 39.) 



1905. UrKleuchtete pustulifera n. sp. G. O. Sars, p. 14. 



1908. Euchirella Wolfendeuii n. sp. Farrau, pp. 38— 39; pi. II figs iS — 19; pi. IV fig. 3. 



1908. Undeuchoete pustulifera G. O. Sars. v. Bremen, p. 44. 



Description. Size of female from Thor St. 183 was 6-9 mm.; anterior division 57 mm.; urosonie 

 i"2 mm. Sars' specimens measured 6-9 and Farran's 7-2 mm. 



The head has no frontal crest, but a strong, slightly curved rostrum (text-fig. 39). The fifth 

 somite is well limited in front, and the lateral corners are rounded (figs 6 a— b). The genital somite 

 has a very characteristic shape (figs. 6 a— b); on the left a low protuberance is found, 

 and on the right side a very prominent one, consisting of a basal larger portion 

 and a terminal regularly rounded part. The genital somite, seen from the side, has 

 a strong, rounded, rather prominent protuberance in front, and a lower one in 

 the middle as well as l^ehind; observed from below the genital area (fig. 6 c) is like Text-fif;- 59- Chirudina 



that of Cli. Strcctsii. The abdomen is almost everywhere hairv, but the setae are pu,iuiij\ra G. O. ^^xs. 



J ■ (9. Head X t. lb. 



longest and best developed dorsally along the hinder margin of somites II -IV. 



Dorsally in the genital somite as well as \cntrall\ in tlie third and fourth ones tufts of shorter and 

 longer hairs are observed. The caudal rami are about as long as wide, and the .Si is .scarcely half as 

 long as the vSt., which is about as long as the abdomen. 



The aiitnuniliw extend to the end of the alidomeu. The aiiteiuiar are scarcely different from 

 Farran's fig. 18 PI. XI, except by the presence of a fairly long terminal seta in Re 2; the Re is about 

 17 as long as Ri. The inaHdibulae are scarcely different from those of C. abyssalis n. sp. (cf. fig. 5 b); 

 the third basipodite is not smooth as indicated by Farran, but has 3 .setae. The waxillitlac have 5 

 powerful setae in I,i 2, have 4 f a conical process in Li 3, and 5 in the Rasp. 3; the Ri I -III po.s- 



'riic Iilgolf-K\pedinon. 111. .(. 9 



