218 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 18 



a northern species which occurs sporadically in the southern California 

 area, meeting its southern neighbor P. epistomus and perhaps interbreed- 

 ing with it to provide the variety of phenotypes seen in P. epistomus. If 

 so, then the two species should become subspecies. 



Another possibility is that P. lucubrans is a simple phenotype of P. 

 epistomus. If so, then its presence might also be demonstrable in speci- 

 mens collected in Atlantic waters. 



Material examined. — 264 specimens at 34 stations. 



Distribution. — Southern California coastal shelf, 5 to 50 fms. More 

 than 60% of the records are deeper than 20 fms. It is possible that this 

 is a transitional stage between P. epistomus and P. daboius living in 

 depths intermediate between the two. Most of the shallow records con- 

 cern specimens of juvenile size, which may be aberrant small P. epistomus. 



Faraphoxus bicuspidatus, new species 

 (Plates IS, 16) 



Diagnosis of female. — Rostrum constricted anterior to the eyes, 

 varying from medium length to long, apex broad. Eyes very small. Body 

 broad. 



Epistome minutely produced anteriorly. 



Maxillipedal palp article 4 unmodified apically. 



Gnathopods 1 and 2 similar, article 5 longer than 6, the latter rather 

 narrow, palm transverse. Ratio of article 5 to 6 in gnathopod 1 = 23 :17. 



Peraeopod 3 : article 4 nearly as wide as 2, article 5 scarcely more 

 slender, article 6 narrow, shorter than 5; article 7 medium in length. 

 Ratio of widths of articles 2, 4, 5, 6 = 26:24:22:9. 



Peraeopod 4: articles 4-5 narrower than in peraeopod 3, but the 

 appendage is stout, nevertheless. Ratio of widths of articles 2, 4, 5, 

 6 -=36:20:15:6. 



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

 length is 38:45, extending downward nearly to the end of article 4, 

 sweep point near distal end of article 3, lower edge truncated and dipping 

 anteriorly,* posterior edge with two large spurs, one each near the dorsal 

 and ventral edges, the dorsal one varying from as long to much longer 

 than the ventral spur. Rest of appendage slender. 



Uropods 1 and 2 with rami shorter than peduncles. Uropod 1 with 

 peduncle armed with about 4 medium-sized spines becoming slender 

 proximally; each ramus has a short marginal spine and a terminal claw. 



