4 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 5 



side, curved, extending to middle of cornea. Ophthalmic scales triangu- 

 lar, with a subapical spine, upper surface concave. 



Major cheliped with merus trigonal, two upper distal spines, outer, 

 lower distal end spined, inner distal margin and under surface granu- 

 late and rugose; carpus widest distally, surface rugose, with few setae; 

 a few spines parallel inner margin, inner margin armed with forward- 

 pointing spines, twelve or more, outer margin sharply deflexed, rugose 

 proximally, granular distally; hand rectangular, two thirds as wide as 

 long, margined with heavy-based, blunt-ended spines, surface paved 

 with close-fitting, rounded-topped granules, two rows of well-separated 

 tubercles converge near base of a boss at base of pollex ; a granular ridge 

 parallels inner margin of palm, ending in a prominent elevation at base 

 of dactyl; the fingers with a median elevation, on either side of which 

 the surface is concave. The minor cheliped reaches slightly past the 

 carpus of the major; the merus is like the major though smaller; 

 carpus narrow, crested with teeth and granular on outer surface; the 

 manus is subrhomboidal, with three dull teeth on the inner margin of 

 palm, the outer margin with six or seven teeth in the median portion, 

 the surface plated as in the major chela and with a few proximal 

 tubercles on the tumid median ridge at the proximal end. 



The first pair of ambulatory legs are similar, lightly setose; the 

 carpus with a crest of spines; dactyli compressed, slightly twisted and 

 nearly as long as the carpus and propodus. In the second pair, except 

 for the longer ischium, the right leg is similar to those of the first pair, 

 while that on the left side has a row of heavy granules on the posterior 

 side of the propodus and dactyl, separated by a deep groove from both 

 an upper and a lower ridge of setae. 



Color in alcohol: Bufif with reds and browns. 



Range: Throughout the Gulf of California. Found in from 15 

 to 50 fathoms. 



Remarks: This proposed species is allied to P. tannert (Benedict), 

 1892, but diflfers in that the eye-stalks are longer than the anterior 

 border of the carapace, instead of subequal in length; by the antennal 

 acicles being shorter than the eye-stalks, instead of extending past the 

 cornea; by the hands being plated, instead of tuberculated ; by the 

 smaller hand being margined with teeth, instead of with spinules; by 

 the second pair of ambulatory legs being asymmetric, instead of sym- 

 metric. 



In this latter respect P. bunomanus resembles some of the species 

 in other genera, such as Dardanus, Coenobita, and Diogenes. 



