482 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 5 



800-38. Cartago Bay, Albemarle Island, shore, Jan. 22, 1938, 1 male, 



5 females (2 ovig.). 

 808-38. Academy Bay, Indefatigable Island, shore, Jan. 25, 1938, 4 

 males, 6 females (4 ovig.). 



Measurements. — Largest specimen, female: length 16.5 mm, width 

 25.9 mm, cheliped 34.0 mm, chela 23.3 mm, dactyl 10.8 mm. 



Color in life. — Carapace and chelipeds uniform heliotrope purple. 

 Fingers black, lightening toward tips. Eggs magenta. (Garth) 



Habitat. — Shore, under loose rocks and pebbles. Rarely found in 

 coral. 



Depth. — Shore. 



Re?narks. — This species is one of the most abundant of the Galapagos 

 fauna and is exceeded in numbers of specimens collected only by Leptodius 

 cooksoni Miers among free-living Xanthidae. It may be distinguished at 

 once from its congeners and from all other Galapagos xanthids by the 

 extremely tenuous dactyls of the minor chela, which suggested to Locking- 

 ton the specific name tenuidactylus. The species has gone for many years 

 under the name of Ozius agassizii A. Milne Edwards, and so appears in 

 all publications dealing with Galapagos Brachyura with the exception of 

 Schmitt (1939), and including the Rathbun monograph (1930). 



Genus ERIPHIA Latreille, 1817 

 Key to the Galapagos Species of the Genus Eriphia 



A^ Frontal lobes and margins of orbit smooth and convex. Tubercles 



of wrist coalesced E. granulosa 



A^ Frontal lobes and margins of orbit thin and granulate. Tubercles 



of wrist single E. squamata 



Eriphia squamata Stimpson 

 Plate 83, Figs. 5, 6 



Eriphia squamata Stimpson, Ann. Lye. Nat. Hist. New York, vol. 7, p. 

 56 (10), 1859. Rathbun, Zoologica, vol. 5, no. 14, p. 158, 1924; 

 Bull. 152, U.S. Nat. Mus., p. 550, pi. 223; pi. 224, fig. 1 ; text fig. 

 84, and synonymy, 1930. Hult, Arkiv for Zoologi, Band 30A, no. 5, 

 p. 13, 1938. 



Type locality. — Mazatlan, Mexico. 

 Type. — Not extant. 



Range. — From Magdalena Bay, Lower California (Orcutt), and 

 Agua Verde Bay, Gulf of California (Albatross), to Salinas, Ecuador 

 (Schmitt) ; Galapagos Islands (Jones). 



