﻿COPEPODA 



77 



imeiis which they have referred to yl. ariiKitus are not to he distingiiislicd from specimens from the 

 northern seas. The gnlf of Guinea, the- vScjutli Atlantic, tlie Indian and Mala_\'aii vSeas ou.f^ht accor- 

 dingly to be regarded as King within the range of this species. Kvcn if Sars is right, that some 

 of Brady's specimens are identical with lioeck's species, we are not right in concluding that the 

 species has the distribntion stated b\- I5rad\' (cf. A. Scott's remark p. 37). 



16. Chiridius armatus Boeck. 



(PI. II fig.s. 3a— e; text-figs. 17 a— d) 



i<S72. Rucha^te arniata 11. sp. Boeck, p. 39. | 1905. 



1S97. iiec. Pseiulocalamis ariiiatus Eoeck. V.-inliiiffi-n, p. 279, | 1905. 



fi.U- if'- igo.S- 



1900. nee Chiridius armatus Boeck. G. O. Sar.s, pp. 29-30. ' 1906. 



1903. — — — ('>. (). Sars, pp. 27 29, I 1907. 



pis. XV- XVI. I 190.S. 



1903. — — — Jeuseu, Johanseu & I.e- , 1908. 



vinsen, p. 304. 



190.4, Pseniloaetiilius aitnalus Boeck. Wolfendeu, pp. 115 , igir. 



aiul 131. pi. IV fig.s. 29 — 31. ^ 191.V "ec 



CUiriilius armatus lioirk. I'arran, p. 34. 



— — — G. (). Sars, p. 2. 



— — — Th. Scott, ]). 222. 

 Pscudoaetiflius armatus Boeck. Pearson, p. 11. 

 Cliiridius armatus Boeck. Koefoed & Damas, p. 408. 



— — — Farran, p. 30. 

 Pseudoaetidius annatus Boeck. v. Bremen, p. 33, 



fig- 34. 

 Chiriilius armatus Boeck. Farran, pp. 90 — 91. 

 Stephenscn, p. 316. 



Description, f"^. Size of specimens from Tlior St. 172 measured 4-43 mm., anterior division 

 3-3 nnn., urosome I'lo mm. The smallest specimen (Thor St. 72) measured 3-6 mm. 



The body differred in the following features from Sars' description; laterally aiul beneath, the 

 limitation between the head and first thoracic tcrgite is indicated; the fifth thoracic tergite, which is 

 produced into well developed triangular points, is ^ b e 



short, but well distinguished (text-fig. 17 c). The 

 genital somite is only slightl)' produced beneath, and 

 the receptaculum has, as seen in fig. 17 d, a charac- 

 teristic structure. The furcal rami, which are a little 

 longer than the anal somite, are scarcely 1-3 as long 

 as wide. 



The aitfonnilac. which have the segment 25 

 well marked out with rather indistinct articular 

 membrane, have the segment 2 a little longer than 



8 "NJ 9, which is as long as the segmeirt 20; the seg- 

 ment 21 is a little longer than iS, and the segment 

 23 is distinctly it as long as 24. The arrangement 

 of the appendages is scarcely different from that of C/i. 



1 1 -r .1 . • i r ii 1- • t Text-fi"'. 17. Chin'dius nriiuiltis Bocck. 



ootiisuroiix ; the posterior seta of the segment 2; lUst , ^ . ' ,,,,,-,. , ■ ^ -- 



■' ^ ^ ■^ -^ a. Head m dorsal view X "''■ '>■ Head in lateral view X 60. 



reaches the tip of the segment 25. Tlie exopodite c. First abdominal somite in dorsal view X 50- 



r , , . , , ,' , d. Lateral corner etc. X 60. c. Parasite attached to the 



of the anfnmac is scarcely i"4 as long as the cndo- . ,, ,,, ,„, .^ „, 



' ^ rigut maxilla x 74' 



podite. The Le i of the maxillular has as usual 



9 setae and the I.i 2 pos.sess 5 spinelike setae, the Li 3, which terminally on the anterior surface lias a 

 curved row of .short spines, has 4 setae, and the basipodite III has a similar row of short spines and 



