NO. 3 BARNARD: THE PHOXOCEPHALIDAE 259 



that this is of serous concern, in light of occasional short-headed specimens 

 found in California (see above). 



Material examined. — 1125 specimens at 186 stations. 



Distribution. — Kurile Islands to Colombia, South America, and the 

 Gulf of California, to 80 fms, generally shallower than 20 fms. This 

 species is large and was frequently collected by Velero III expeditions in 

 the tropical eastern Pacific at Colombia, Panama, Costa Rica, Gulf of 

 California and Lower California. It occurs intertidally at La Jolla and 

 Pt. Fermin, California, and has been collected at the mouth of the Sa- 

 linas River in Monterey County, California. It lives in medium and 

 coarse sands. 



Paraphoxus obtusidens major, new subspecies 



(Plate 32) 



Diagnosis of female. — Head rather large, broad basally, the long 

 rostrum tapering evenly anteriorly, eyes small in size, oval. Body narrow. 



Epistome unproduced. 



Maxilliped with unmodified apex of palp article 4. 



Gnathopod 1 : article 6 longer than 5, not very broadly expanded, 

 palm oblique. Ratio of lengths of articles 5 and 6; Gnathopod 1= 

 13:15, Gnathopod 2 = 12:15. 



Peraeopod 3 : article 4 nearly as broad as 2, but much broader than 

 article 5, article 6 shorter than 5, article 7 short. Ratio of widths of 

 articles 2, 4, 5, 6 = 38:32:18:9. 



Peraeopod 4: articles 4 and 5 much more slender than in peraeopod 3, 

 the widths of articles 4 and 5 are 23 and 15 while in peraeopod 3 they 

 are 32 and 18. 



Peraeopod 5 : article 2 broadly expanded, about as long as wide, 

 posterior edge with about 5 minute teeth, sweep point above base of 

 article 3, lower edge of article 2 quite convex, semi-circular; article 2 

 extends down only slightly beyond end of article 3 : articles 4 and 5 

 quite broad, being nearly as broad as article 4 of peraeopod 4; article 6 

 slender, longer than 5 ; article 6 very setose. 



Uropods 1 and 2 ; rami longer than peduncle. Uropod 1 : peduncle 

 armed with slender, moderately long setae, rami with numerous short 

 spines, apices each with a movable spine as on uropod 2. 



Uropod 2 : peduncle with long setae, inner ramus bare, outer ramus 

 with numerous slender, but short spines. 



Uropod 3 : rami subequal in length, quite slender, outer ramus with 

 article 2 less than one ninth as long as article 1. 



