No. 10 GARTH : BRACHYURAN FAUNA OF THE GALAPAGOS 465 



811a-38. Barrington Island, Pavona coral, Jan. 26, 1938, 1 young male 

 Color in life. — Ground color of carapace pale vinaceous russet with 

 pale violet purple tint on intestinal and branchial areas, gradually blend- 

 ing into very strong violet purple on other areas. Tips of marginal teeth 

 light. Numerous small and a few large blotches of bluish white. Cheliped 

 like carapace but violet purple color much more intense. Fingers black; 

 tips brownish white. Ambulatory legs with pale blue and white blotches 

 more in evidence, almost in bands. Dactyl white, nail yellow. (Petersen) 

 Habitat. — Shore, under rocks; Pocillopora coral. 

 Remarks. — The largest male from the first Charles Island shore 

 station (the type) was compared with the specimen figured as Pilumnus 

 beebei Boone (1927, fig. 80) and agrees with it in every particular. Since 

 the photographed specimen was not the type, and since the written descrip- 

 tion is of a different species and has page precedence over the figure, the 

 writer follows Rathbun (1930) in considering the Boone species a syno- 

 nym of Micropanope xantusii (Stimpson). (See also remarks under this 

 species.) 



This distinctive species is named for Dr. C. McLean Fraser. 



Genus TETRAXANTHUS Rathbun, 1898 



Tetraxanthus rathbunae Chace (tentative) 



Plate 80, Fig. 1 



Not Xanthodes bidentatus A. Milne Edwards, Crust. Reg. Mex., p. 353, 



pi. 53, figs. 5-5b, 1880. 

 Tetraxanthus bidentatus Rathbun, Bull. Lab. Nat. Hist. State Univ. 

 Iowa, vol. 4, p. 275, 1898; Bull. 152, U.S. Nat. Mus., p. 458, pi. 

 184, 1930. 

 Tetraxanthus rathbunae Chace, Mem. de la Soc. Cubana de Hist. Nat., 

 vol. 13, no. 1, p. 52, 1939. Torreia, no. 4, p. 37, 1940. 

 Type locality. — Old Bahama Channel due north of Punta Caldera, 

 Camaguey Province, Cuba, 150-180 fms. 

 Type.— MCZ No. 10213. 



Range. — From off Cape Lookout, North Carolina (Albatross), to of? 

 Cape Frio, Brazil (Albatross); 15-260 fms. (Chace) 



Diagnosis. — Carapace very convex, regions not indicated. Four lateral 

 teeth, of which the first two are inconspicuous, the last two wide and 

 blunt. Front not sharply demarcated from internal orbital angles. A 

 lobe on carpus of cheliped at inner angle. Legs spindly. Tips of fingers 

 crossing. 



