NO. 3 



BARNARD : THE PHOXOCEPHALIDAE 



261 



sands; Santa Cruz Island, 10 fms; Blanca Bay, Lower California, 

 8-12 fms. 



The heterocuspidatus, tridentatus, t. pallidus Complex 



The three species and subspecies in the complex to be described are dif- 

 ficult to identify separately and it has been the opinion of the writer at 

 times to submerge all of them as subspecies. However, considerably more 

 northern and bay specimens must be collected in order to clarify the rela- 

 tionships. The following table may be useful in distinguishing the species 

 as they now stand: 



TABLE 6 



Paraphoxus tridentatus (J. L. Barnard), new combination 



Pontharpinia tridentata J. L. Barnard 1954: 4-6, pis. 4-5. 



Diagnosis of female. — Head short, with rostrum constricted in front 

 of eyes; eyes small in size, oval. Body very broad, flattened dorsally. 



Epistome unproduced. 



Maxillipedal palp article 4 with subapical seta only. 



Gnathopods 1-2: article 5 slightly longer than 6, article 6 narrow 

 but expanding distally, palm nearly transverse. 



Peraeopod 3 : articles 4-5 broadly expanded, slightly narrower than 

 article 2, article 6 two thirds as long as 5. Ratio of widths of articles 

 2,4,5,6 = 26:22:20:8. 



Peraeopod 4: article 4 expanded as broadly as article 4 in peraeopod 

 3, but much narrower than article 2 which is very broad in peraeopod 4, 

 article 6 longer than 5. 



