Boone, Crustacea, Cruises of "Eagle" and " Ara," 1921-28 143 



very long, acuminate. Both chelipeds and ambulatories are fur- 

 nished with many long,, dense setae. 



Synonymy. — Pilumnus floridanus Stimpson, Bull. Mus. Comp. Zool., 

 vol. 2, p. 141, 1870. — MiERS, ''Challenger" Zool., Brachyura, vol. 

 17, p. 152, pi. 13, fig. 3a to d, 1886.— Rathbun, Ann. Inst. Ja- 

 maica, vol. 1, No. 1, p. 16, 1897 ; Amer. Nat., vol. 34, p. 139, 1900 ; 

 U. S. Fish. Comm., vol. 20, part 2, p. 40, 1901 ; Univ. Iowa Studies 

 Nat. Hist., vol. 7, No. 5, p. 74, 1921; A. Milne Edwards and 

 BouviER, E. L., Mem. Mus. Comp. Zool., vol. 47, p. 322, 1923. 



Subfamily: Eriphiinae. 



Genus : ERIPHIA Latreille. 

 EripMa squamata Stimpson. 



Plate 47, fig. A. 



Type: Obtained at Mazatlan, Mexico, and deposited in the 

 * * Museum of the Smithsonian Institution ' ' ; specimen no longer extant. 



Diagnostic characters: There are three American species of 

 Eriphia, E. gonagra Fabricius, the West Indian species, which E. 

 squamata closely resembles in all the major characters but differs from 

 in having the carapace ornamented anteriorly with coarse squamous, 

 scale-like tubercles which in some places simulate rugae ; each tubercle 

 is ringed basally with a fringe of setae. The chelipeds are conspicu- 

 ously unequal, with the large, scale-like tubercles of the wrist and 

 hand squamous and each tubercle ringed anteriorly or completely with 

 setae. The third species, E. granulosa A. Milne Edwards is also a 

 west coast American species and was created by Prof. A. Milne Ed- 

 wards on a single specimen believed to be from Chile. The principal 

 diagnostic characters given for this species are that the granular 

 tubercles of the gastric of granulosa are separate, not arranged in 

 rows, and that the placement of the tubercles on the wrist and hand 

 is distinctive, these tubercles being longitudinally elongated on the 

 carpus. This character is so slight and so variable that at best E. 

 granulosa should be regarded as a subspecies of E. squamata. 



Distribution : Known as a reef-dwelling species from Lower Cali- 

 fornia, at Cape St. Lucas, southward to Peru; also one record from 

 Chile. 



Material examined: One female, Canos Island, Costa Rica. 



Color : Dark plum purple with a reddish cast, in living specimens. 



Technical description : Carapace wide anteriorly ; the regions dis- 

 tinctly indicated by sulci ; the interorbital space is truncate anteriorly, 



