No. 10 GARTH : BRACHYURAN FAUNA OF THE GALAPAGOS 455 



Type locality. — Cartago Bay, Albemarle Island, Galapagos Islands; 

 15-18 fms. 



Type.—AHY no. 384. 

 Range. — Known only from the type locality. 



Diagnosis. — Front oblique, lateral lobes prominent. First and second 

 teeth fused, their combined width equal to that of third; fifth tooth re- 

 duced, almost postlateral. Major chela of adult male without superior 

 crest. 



Material exa?ni?ied (14 specimens from 3 stations). — 

 74-33. Cartago Bay, Albemarle Island, 3-6 fms, Feb. 14, 1933, 3 

 females (2 ovig.). 

 187-34. Cartago Bay, Albemarle Island, 8-10 fms, Jan. 25, 1934, 3 



males, 7 females (4 ovig.). 

 799-38. Cartago Bay, Albemarle Island, 15-18 fms, Jan. 22, 1938, 1 

 male (holotype, AHF no. 384). 

 Measurements. — Male holotype: length 5.4 mm, width 7.3 mm, chela 

 6.4 mm ; female allotype : length 3.9 mm, width 5.4 mm. 

 Habitat. — Sand bottom with occasional rock patches. 

 Depth. — 3-18 fms. 



Remarks. — One of the most localized members of the Galapagos 

 brachyuran fauna, this tiny panopeid crab has been found only on the 

 extensive flat bottom of Cartago Bay, the indentation from the east which 

 separates Albemarle Island into two halves at Perry Isthmus. The only 

 representative of its genus in the archipelago, it finds its nearest affinity 

 in H. costaricensis Garth (1940) of the Central American mainland 

 coast. Both species have the first and second anterolateral teeth fused. 



Genus EURYPANOPEUS A. Milne Edwards, 1880 

 Eurypanopeus transversus (Stimpson) 



Panopeus transversus Stimpson, Ann. Lye. Nat. Hist. New York, vol. 7, 



p. 210 (82), 1860. 

 Eurypanopeus transversus A. Milne Edwards, Crust. Reg. Mex., p. 319, 

 pi. 59, figs. 1-1 f, 1880. Boone, Zoologica, vol. 8, no. 4, p. 211, text 

 fig. 76, 1927. Rathbun, Bull. 152, U.S. Nat. Mus., p. 407, pi. 172, 

 figs. 5-7, 1930. 

 Type locality. — Panama. 

 Type. — Not extant. 



Range. — From Mexico (A. Milne Edwards) to Paita, Peru (Jones) ; 

 Galapagos Islands (Noma). 



