254 Annals of the South African Museum. 



specific character except in conjunction with other and constant 

 characters. Chevreux in 1900 described it in vaillantii as about equal 

 to the 2 last peduncular joints, at least 25-jointed ; Walker says that 

 in intermedia it equals the last peduncular joint and is 9-joiuted. 

 The South African specimens form a link between these two varieties, 

 the flagellum being equal to the last peduncular joint and 20-jointed. 



The following details refer to the South African specimens : 



First and second antennae about equal in length. 



First maxilla, inner plate with 3-4 setae. 



Second maxilla, outer plate wider than inner, widest at distal 

 truncate end. 



Maxilliped, outer plate with trifid spines along inner margin. 



First gnathopod, lobe on apex of 2nd joint very prominent, creuulate 

 and setose, 6th joint longer than 5th, tapering slightly distally, palm 

 not defined from inferior margin except by a stout spine, finger 

 strongly serrate ; there is little difference in the two sexes, in the $ 

 the limb is rather longer, 6th joint also proportionately longer. 

 Inferior margin of the side-plate setulose. 



Second guathopod, lobe on apex of 2nd joint very prominent, 

 creuulate and setose, 5th and 6th joints in $ as in Chevreux's figure 

 of intermedia (I.e. 1907, fig. 29) but defining tooth bi'oad, almost lobe- 

 like (see Walker, I.e. 1904, p. 291, footnote, where a similar variety 

 of the Ceylon form is mentioned), the outer margin straight, inner 

 strongly convex; in ? 6th joint as in Walker's figure (I.e. 1904), but 

 palm rather more sinuous ; finger in both sexes strongly serrate, 

 infei-ior margin of side-plate setulose. 



Third uropod, peduncle with 4-5 stout spines on upper apical 

 margin, inner ramus broader but shorter than outer, apex with 2-4 

 spines and 4 setae, outer ramus with 2 strong recurved spines, upper 

 margin very minutely scabrous. 



Telsou obtusely triangular, with a few setae towards apex, distal 

 margin convex between 2 small tubercles. 



Length : $ 7'5 mm., ? 9'5 mm. 



Colour : Claret or brownish green with a row of whitish irregular 

 dorsal spots, one on each of peraeon segments 6 and 7 and pleou 

 segments 1-3, and a whitish spot in the antero-inferior angle of side- 

 plates 1-5, flagellum and distal joints of peraeopods whitish, eyes 

 similar to the ground colour. 



The markings correspond with those described by Chevreux for 

 vaillantii (I.e. 1910, p. 260). 



Locality: Buffel's Bay (False Bay). 28/9/13. (K.H.B.) JJ, 

 ovigerous ? ? and young ; Sea Point, near Cape Town. 15/11/13. 



