PART 1 GARTH : PACIFIC OXYRHYNCHA 299 



Ambulatory legs diminishing regularly in length, cylindrical, pubes- 

 cent ; dactyli almost as long as propodi, tips curved. 



Sternal trough extending past tip of abdomen, incompletely filled by 

 it. Male abdomen (see text-fig. 7) with seven free somites. (Garth, 

 1940, revised) 



7. Notohpas mexicanus, male holotype (U.S.N.M. No. 91081), abdomen, x 15. 



Chelipeds of female shorter and more slender than those of male, 

 otherwise resembling them ; fingers not crossing at tips. 



In the female specimen the four tubercles in a diamond on the cara- 

 pace of the male represented by four spinulous granules, the two bran- 

 chial tending to become obsolete. 



Material examined: In addition to the male holotype, an ovigerous 

 female from Tenacatita Bay, Jalisco, Mexico, lagoon, February 15, 1935, 

 station 487-35. 



Measurements: Male holotype: length 7.5 mm, width 5.2 mm, 

 exorbital width 3.2 mm, rostrum 1.1 mm, width 1.1 mm, cheliped 11.1 

 mm, chela 3.9 mm, height of palm 1.0 mm. Ovigerous female: length 

 6.5 mm, width 4.6 mm, rostrum 0.9 mm, width 0.7 mm, cheliped 5.7 

 mm, chela 2.5 mm, dactyl 1.0 mm, first ambulatory leg 6.0 mm. 



Color in life: Unknown. 



Habitat: Rock with gorgonids. (Garth) The female specimen from 

 Tenacatita Bay was collected in a lagoon in association with Pinna, the 

 hatchet clam. 



Depth: Shoal water to 25 fathoms. 



Breeding: The single ovigerous female was collected in February. 



