156 



BULLETIN 97, UNITED STATES NATIONAL MUSEUM. 



a 



FlG. 97. FlXXIXA OCCIDEXTALIS, MALE HOLOTYrE. 



ABDOMEN, X CJ ; b, OUTEU MAXILLII-ED, x 13g. 



Legs thick, granulate; dactyli styliform; third leg reaching 

 by length 'of dactyl beyond second leg; merus with subparallel 



sides and three or 

 more times as long as 

 wide. 



Abdomen of male 

 narrowed a little at 

 first suture, then taper- 

 ing to the sixth seg- 

 ment which is con- 

 stricted at middle. 



Variations. Cardiac 

 ridge blunter in female 

 than in male, immov- 

 able finger longer, third 

 leg shorter and wider, 

 about 2 tunes as long 

 a, as wide. Specimens 

 vary in the proportion 

 of length to width of carapace, in the prominence of cardiac ridge, 

 in the direction of the margins of the second abdominal segment of 

 male, in the length of the immovable finger of the male. 



Measurements. Male holotype, length of carapace 9.5, width 19.5, 

 length of third leg 27 mm. Female paratype (17474) , length of cara- 

 pace 10.5, width 20.5, length of third leg, about 24 mm. 



Habitat. Commensal in burrows of the Gephyrean, EcMurus 

 (Kincaid). 



Range. From Iliuliuk Harbor, Unalaska, to Magdalena Bay 

 Lower California ; 10 to 238 fathoms. 

 Material examined. See page 157. 



PINNIXA SAYANA Stimpsoru 



Plate 34, figs. 2-4. 



Pinnixa sayana STIMPSON, Ann. Lye. Nat. Hist. New York, vol. 7, 1860, p. 

 230 [108] (type-locality, off mouth of Beaufort Harbor, N. C., G fath- 

 oms, sandy mud; type not extant). KINGSUSY, Proc. Acad. Nat. Sci. 

 Philadelphia, 1878, p. 323 f 8]. SMITH, Trans. Connecticut Acad. Arts 

 and Sci., vol. 4, 1880, p. 252. FOWLER, Ann. Rept. New Jersey State 

 Mus., 1911 (1912), p. 596 (part; not refs. to P. cyUndrica except Ver- 

 rill and Smith, part). 



Pinnixa cyUndrica VERRIIX, Rept. U. S. Commr. of Fish and Fisheries for 

 1871-1872 (1873), p. 367 [73] (part, not ref. to Stimpson). SMITH, 

 Rept. U. S. Commr. of Fish and Fisheries for 1871-1872 (1873), p. 

 546 [252], pi. 1, fig. 1 (female) ; not P. cyUndrica (Say, ISIS), nor 

 ref. to South Carolina. 



Pinnixa, species, FAXOX, Bull. Mus. Comp. Zoo'l., vol. 5, 1879, p. 263, pi. 4, 

 figs. 5-15; pi. 5, figs. 1-7 (early stages). 



