NO. 2 GARTH : NEW BRACHYURAN CRABS 21 



a pair of brushes of curved golden hairs arising from both inner and 

 outer surfaces at equal distances from the tips. Gordon (1934) illus- 

 trates a remarkably similar contrivance for Phymodius laysani. 



Ambulatoiy legs compressed laterally, fringed with long hairs an- 

 teriorly and short hairs posteriorly. Merus with a few scattered spinules 

 above ; carpus high, overlapping base of propodus above, crenulate along 

 superior margin, spinulous distally; propodus of last two legs shield- 

 shaped, a cluster of blunt spinules above; dactylus bladelike, triangular 

 in cross section, armed with a double row of spinules, of which one row 

 of six is most prominent, tips straight, horny, yellow. 



Male abdomen seven-jointed, segments 3-4-5 fused. First three seg- 

 ments visible in dorsal view. 



Range: Nine specimens were obtained by Allan Hancock Expe- 

 ditions from Hood, Charles, Barrington, Albemarle, and James islands, 

 Galapagos; 30 from Puerto Refugio, Angel de la Guardia Island, to 

 Los Frailes, Gulf of California, Mexico; and one specimen from Secas 

 Islands, Panama; depths from 4 to 40 fathoms. Three additional speci- 

 mens taken in Banderas Bay, Mexico, by the Stranger expedition of 

 1937, led by Capt. Fred E. Lewis, in 5-10 fathoms, are in the collection 

 of Mr. S. A. Glassell. 



Remarks: This species has been confused by several carcinologists 

 with Acidops fimbriatus Stimpson (1871), a Pilu/nnus-like species also 

 white in color and with long, shaggy hair. However, the very long eye- 

 stalks of Acidops and its distinctly dentate anterolateral margin are but 

 two of many prominent characters separating it from the species under 

 consideration. 



The American form appears to be distinguished from the previously 

 described species of Kraussia Dana (1852) by the small eye and much 

 reduced orbits, as well as the long, gaping fingers. It perhaps most 

 nearly approaches K. intiger (de Haan) Alcock (1899) which can be 

 easily recognized by the very much reduced finger of the cheliped, de- 

 scribed as little better than a tubercle. 



Because of the minute size of the Galapagos specimens, the type is 

 selected from the Gulf of California series. 



I am indebted to Dr. Fenner A. Chace, Jr., of the Museum of 

 Comparative Zoologj', Harvard, for a diligent search of the scattered 

 literature on this Old World and Mid-Pacific genus, of which the first 

 American species is here presented. 



