No. 10 GARTH : BRACHYURAN FAUNA OF THE GALAPAGOS 489 



Measurements. — Large female: length 43.7 mm, width 59 mm, 

 cheliped 67 mm, chela 38 mm, dactyl 21 mm. 



Color in life. — Carapace dull violet black with a few cadmium orange 

 patches showing on gastric and cardiac areas. Eyes garnet brown. Cheliped 

 neutral red with tubercles violet black. Movable finger neutral red with 

 purplish tint fading toward tip. Fixed finger very much darker, almost 

 black, with white tip and teeth. Ventral side dull orange yellow with 

 abdomen dull purplish red. Eggs scarlet. (Petersen) 



Habitat. — Rocky shore; typically in burrows in sandstone. 



Depth. — Shore. 



Remarks. — The purple bristle crab is one of the most formidable 

 members of the Galapagos crustacean fauna, and one of the very few 

 species capable of inflicting a painful wound. The massive claws maintain 

 their viselike grip even after being severed from the body. A ledge of soft 

 rock southeast of Cormorant Point, Charles Island, was riddled with 

 burrows of this species. 



Genus DOMEGIA Eydoux and Souleyet, 1842 



Domecia hispida Eydoux and Souleyet 



Plate 81, Fig. 5 



Domecia hispida Eydoux and Souleyet, Voy. Bonite, vol. 1, Crust., p. 

 235, 1842. Rathbun, Bull. 152, U.S. Nat. Mus., p. 554, pi. 227, and 

 synonymy, 1930. Finnegan, Journ. Linn. Soc. London, vol. 37, p. 

 647, 1931. Crane, Zoologica, vol. 22, no. 3, p. 73, 1937. 

 Type locality. — Sandwich Islands. 

 Type. — In Paris Mus. 



Range. — From Arena Bank, Gulf of California (Zaca)j to Gorgona 

 Island, Colombia (Crossland) ; Eastern Atlantic, Indian, and Pacific 

 Oceans. 



Diagnosis. — Carapace transversely oval, flat, smooth. Front and 

 anterolateral margins profusely spinulous, posterolateral margins con- 

 verging rapidly. Chelipeds covered with black spines. Merus of third 

 maxilliped of no great length. Legs spiny. 



Material examined (250 specimens from 20 stations). — 

 30-33. Gardner Bay, Hood Island, shore, Jan. 26, 1933, 2 females 



(1 ovig.). 

 47-33. Barrington Island, 2 fms, Feb. 2, 1933, 1 ovig. female. 

 59-33. Off Cormorant Bay, Charles Island, 13 fms, Feb. 6, 1933, 



1 male. 

 69-33. Albemarle Point, Albemarle Island, shore, Feb. 11, 1933, 20 

 males, 26 females (12 ovig.). 



