No. 10 GARTH : BRACHYURAN FAUNA OF THE GALAPAGOS 491 



Genus TRAPEZIA Latreille, 1825 

 Key to the Galapagos Species of the Genus Trapezia 



A^ Fronto-orbital width greatest width of carapace. No lateral 



tooth T. digitalis 



A2 Fronto-orbital width less than greatest width of carapace. A 



lateral tooth T. cymodoce ferruginea 



Trapezia cymodoce ferruginea Latreille 

 Plate 81, Fig. 4 



Trapezia ferruginea Latreille, Encyc. Meth., Hist. Nat., Entom., vol. 



10, p. 695, 1825. 

 Trapezia cymodoce ferruginea Rathbun, Mem. Mus. Comp. Zool., vol. 

 35, p. 58, 1907; Bull. 152, U.S. Nat. Mus., p. 557, pi. 228, figs. 1 

 and 2, and synonj^my, 1930. Boone, Zoologica, vol. 8, no. 4, p. 240, 

 fig. 88, 1927. Finnegan, Journ. Linn. Soc. London, vol. 37, p. 645, 

 1931. Hult, Arkiv for Zoologi, Band 30A, no. 5, p. 13, 1938. Crane, 

 Zoologica, vol. 22, no. 3, p. 73, 1937. 

 Type locality. — Red Sea. 

 Type. — Not in Paris Mus. 



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

 Island, Colombia (Crossland) ; Galapagos Islands (Arcturus); Red Sea 

 and Indo-Pacific Ocean. 



Diagnosis. — Carapace smooth, no trace of regions. Fronto-orbital 

 width almost equal to width of carapace. Anterolateral margins short, 

 diverging slightly posteriorly. A lateral tooth projecting. Color red. 

 Material examined (1,809 specimens from 21 stations). — 

 30-33. Gardner Bay, Hood Island, shore, Jan. 26, 1933, 37 males, 



31 females (16ovig.). 

 69-33. Albemarle Point, Albemarle Island, shore, Feb. 11, 1933, 411 



specimens. 

 73-33. Cartago Bay, Albemarle Island, shore, Feb. 13, 1933, 37 



males, 26 females (18 ovig.). 

 76-33. Cartago Bay, Albemarle Island, shore, Feb. 14, 1933, 17 males, 



17 females (12 ovig.). 

 80-33. Duncan Island, coral, Feb. 15, 1933, 42 males, 37 females 



(27 ovig.), 2 young. 

 94-33. Darwin Bay, Tower Island, coral, Feb. 22, 1933, 308 speci- 

 mens. 

 96-33. Dai-win Bay, Tower Island, shore, Feb. 24, 1933, 1 male. 

 97-33. Darwin Bay, Tower Island, coral, Feb. 24, 1933, 486 speci- 

 mens. 



