Crustacean Fauna of South Africa. 181 



1 ovigerous ?. s.s. " Pieter Faure." 27/8/03,20/8/03 aud 4/4/01. 

 (S.A.M. Nos. A221, A222 and A240 respectively). 



Geogr. Distribution : Cape Finisterre, 363-510 metres (Chevreux : 

 yrintiildii) ; Bay of Biscay, 950 metres (Bonnier: elegans). 



There can be little doubt that these specimens are assignable to 

 Chevreux's species, and that elegans is the $ of grimaldii. The 

 presence of a small tooth on the 7th peraeon segment in the $ and 

 the fact that the teeth on the pleon are not upturned are not enough 

 to separate the Cape specimens from the North Atlantic ones. 



RHACHOTROPIS PAENEGLABER n. sp. 

 (Plate XXVII. Fig. 10.) 



Rostrum reaching half way along 1st joint of 1st antenna. Eves 

 absent. Antero-lateral angles of head obtuse. 



Peraeon not keeled. Side-plates as in the previous species, but 

 7th not so long proportionately to its depth aud not narrowed so 

 much posteriorly. Pleon segment 1 with very obscure median keel 

 on posterior margin, segment 2 with 3 keels ending in small acute 

 teeth, segment 3 with 3 keels not ending in teeth, segment 4 tri- 

 carinate, the median keel ending in a tooth, the subdorsal keels not 

 reaching the posterior margin. Postero-lateral angles of segment 3 

 rounded and serrate, the margin above also serrate. 



Telson narrow, of nearly even width throughout, apices acute, not 

 quite contiguous, cleft for ^ its length. 



First and second antennae subequal, extending in $ to end of 3rd 

 pleon segment, in ? to end of peraeon, peduncle with calceoli and 

 groups of setae, flagella of both antennae ca. 17- jointed in , ca. 

 10-jointed in $ , accessory flagellum of 1st antenna minute but distinct. 



Mouth parts normal ; mandible with the cutting-edge as in 

 R. grimaldii, and 3rd joint of palp a little longer than 2nd. 



First and second gnathopods, palm denned by a well-marked obtuse 

 projection bearing 6-8 spines, lobe of 5th narrow. 



Third to 5th peraeopods, 2nd joint with entire hind-margin, in 

 peraeopod 5 very faintly serrate and setulose, postero-inferior angle 

 quadrate (as figured by Chevreux for R. proximo.), distal joints of the 

 peraeopods lost. 



Length : 10 mm. 



Colour : In spirit, pale pinkish. 



Lucality : Cape Point E. by K, distant 29 miles. 250-300 fathoms. 

 3 <J , 16 ? ? ; Cape Point N. 81 E., distant 32 miles. 400 fathoms. 



