The Cumacea of the Paritari Expedition. 419 



end, dose to the antero-lateral corner, becomes sharply defìned. 

 The antennal notch is more widely open than in the specimen 

 formerly figured but this is doubtless a sexual character. The 

 autero-lateral angle is less acute in the present specimens, but this 

 character also vavies with age and sex and is moreover subject to 

 great apparent alteration with a slight change in the position in 

 which the specimen is viewed. The antennules, antenna« and 

 legs are ali a little more slender than in the immature male from 

 which these appendages were figured. The antennal flagella are 

 not complete in any of the specimens but their appearance suggests 

 tbat they do not attain the leugth of the body. The sides of the 

 abdominal somites are not grooved for their reception. The uropods 

 (tig. 12) bave the peduncle shorter and the rami longer than in the 

 Irish specimens. Thus while in immature males of both forms the 

 uropods are longer by about Ve than the last two somites together, 

 in the Mediterraueau specimen the endopod is nearly equal to the 

 peduncle (24 : 27) but in the Irish specimen it is not 2/3 of that length 

 (16 : 27). In the adult male the endopod is nearly ^4 of the length 

 of the peduncle. In the shape and proportions of the segments of 

 the other appendages no noteworthy diiferenees from the typ es of 

 C. helgcc appear to exist. 



Occurrence. — Station 17, 18, 39, 44. Depth 950 — 

 1100 metres. 



Proccmipylaspis, 



This genus was founded by Bonnier for the reception of two 

 forms which he regarded as distinct species, P. armata and P. echi- 

 naia. I bave already suggested (Fisherìes Ireland Se. luvest. 1904 

 N: 1 [1905] p. 33) that these two species must be united, the first 

 being described from a young male and the second from an adult 

 male specimen. A new species occurs in the present collection and 

 is described below. 



Pvocmnpylaspis armata Bonnier (pi. 27 figs. 13—20). 



P. armata., Bonnier, Ann. Univ. Lyon Tome 26 1896, Campagne 



du Caudau p. 541 pi. 29 fig. 1 [Immature cf]. 

 P. echinata, Bonnier, 1. e. p. 544, pi. 29 fig. 2 [Adult cf ]. 



Description of immature female (figs. 13, 14). Total 

 length 3.5 mm. 



