138 BULLETIN 97, UNITED STATES NATIONAL MUSEUM. 



Male abdomen tapers evenly from base to last segment, first two 

 segments shortest, last segment broader than long, rounded at tip. 



Measurements. Ovigerous female (17862), length of carapace 

 2.2, width of same 5.1 mm. 



Habitat. Commensal in tubes of annelid worms (Clymenelld) . 



Range. California : Tomales Bay to San Pedro. 



Specimen examined. Tomales Baj r , California, in tube of Mnlda- 

 nid; May, 1876; 1 female ovigerous (17862). Perhaps received from 

 T'Orkington, but not so labeled. 



PINNIXA FLORIDANA, new species. 



Plate 30, figs. 4-7. 



Pinnixa cylindrica KINGSLEY, Proc. Acad. Nat. Sci. Philadelphia, 1879, p. 

 402 (part: some specimens from Sarasota Bay). 



Type-locality. Marco, Florida; Henry Hemphill; female holo- 

 type, Cat. No. 6996, U. S. N. M. 



Diagnosis. Carapace twice or little more than twice as wide as 

 long. Merus of third leg less than twice as long as wide. Dactyli 

 of legs straight. Chelae weak, granulate. 



Description of female. Carapace appearing suboblong, the an- 

 tero-lateral angle forming a sort of shoulder, the side walls steep 



FlO. 82. PlNXIXA PLOKIDANA. a, ABDOMEN OP MALE (49249) X 19 J 6, OUTEK MAXILLI- 



PED OF FEMALE PABATYPE (G99G), X 19. 



and tapering outwardly; surface smooth and punctate; gastro-car- 

 diac groove shallow, cardiac region elevated but without ridge, an- 

 tero-lateral margin, up to the cervical suture, a sharp, milled crest; 

 posterior margin concave. Front truncate, not advanced. Orbits 

 inclined forward outwardly in dorsal view, and, downward in front 

 view. 



Chelipeds weak, hairy; chelae tapering distally; propodus with 

 denticulate upper margin, a row of sharp granules near lower mar- 

 gin, continued feebly on finger, a row of granules at middle, and 

 scattered granules above middle ; fingers nearly horizontal, not gap- 



