262 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 18 



Peraeopod 5: article 2 not broadly expanded, ratio of width to 

 length is 46:51, posterior edge with 3 large teeth increasing in size 

 ventrally; sweep point near distal end of article 3, lower edge dipping 

 slightly anteriorly but truncated; rest of appendage rather stout except 

 for article 6 which is narrow and not longer than either article 4 or 5. 



Uropods stout. Uropod 1 : peduncle sparsely spinate, distal spines 

 stout, rami shorter than peduncle, each with one stout marginal and one 

 terminal spine. 



Uropod 2: peduncle with about 4 stout marginal spines, rami as 

 long as peduncle, inner ramus with 1 marginal and 1 terminal spine, 

 outer ramus with a terminal spine only. 



Uropod 3 : inner ramus about one third as long as outer, article 2 

 of outer ramus short, about one fourth as long as article 1. 



Telson slender, apices oblique and slightly notched, each with several 

 long setae. 



Third epimeron : posterior edge curving broadly into lower edge and 

 sparsely setose. 



Male. — Sexual dimorphism typical. 



Remarks. — The figure of the third epimeron in J.L. Barnard 1954 

 is poor for it is an oblique view. The correct shape is very close to the 

 figure of P. tridentatus pallidus n. subsp., herein. 



Material examined. — 6 specimens at 2 stations. 



Distribution. — A northern species replaced by P. heterocuspidatus n. 

 sp. in southern California. The southernmost records are at Goleta, 10 

 fms on the coastal shelf and Santa Cruz Island, 10 fms. The species 

 was described from Oregon. 



Paraphoxus tridentatus pallidus, new subspecies 



(Plates 38, 39) 



Diagnosis of female. — Head with broad rostrum constricted in front 

 of eyes and rather short. Eyes small in size. Body very broad, dorsally 

 flattened. 



Epistome unproduced, with a small anterior cusp. 



Maxillipedal palp article 4 with subapical seta only. 



Gnathopods 1-2 : article 5 much longer than 6, the latter quite narrow 

 and not expanding distally, palm transverse. Ratio of articles 5-6; 

 Gnathopod 1 = 35 :24, Gnathopod 2 = 36 :26. Coxae armed on medial 

 surfaces with small setae on coxa 1 and large ones on coxa 2. 



