236 BULLETIN 152, UNITED STATES NATIONAL MUSEUM 



» G-. Antero-lateral teeth not strong. 



H'. Superior inner orbital tooth not separated by 



an emargination from the outer angle of 



the front. 



J'. Surface of body and appendages covered 



with a short close pile (in the American 



species). Legs of moderate length. 



Antero-lateral divisions obscure. 



Front arcuate Xanthias, p. 464. 



J2. Five low antero-lateral teeth. Teeth and 

 lower surface of chelipeds granulate. 



Front bilobed Eucratodes, p. 470. 



H^. Superior inner orbital tooth separated by an 

 emargination from the outer angle of the 

 front. 

 Ji. Regions well marked. Antero-lateral 

 teeth projecting well outward even 

 though small -Paraxanthias (part), p. 465. 

 .P. Carapace more even, regions not well 

 indicated. 

 K'. Carapace depressed. Antero-lateral 

 margin thin, teeth little projecting, 

 second tooth fused with first. 



Eurypanopeus, p. 403. 

 K2. Carapace convex, smooth. Antero- 

 lateral margin faintly lobed or 

 toothed. Palms elongate, major 

 palm at least twice as wide as minor; 

 fingers short_-Paraliomera, p. 243. 

 F^. Carapace more or less hexagonal or subquadrate. 



G^ Margin of hepatic region thick, non-dentate. 

 Carapace fiat. Chelipeds heavy, unequal. 



Lophoxanthus, p. 316. 

 Gr*. Margin of hepatic region not thick nor dentate. 

 H^ Frontal and antero-lateral regions rotigh with 

 numerous tubercles, spinules or sharp gran- 

 ules. Ambulatory legs spinulous above. 

 Ji. Antero-lateral regions coarsely tiibor- 

 culate. 

 K". Basal antennal article broad, prolonged 

 into the orbital hiatus. Front 

 prominent, four-toothed. Fingers 



spooned Phymodius, p. 294. 



K^. Basal antennal article narrow, not 

 prolonged into the orbital hatius. 

 Chelipeds coarsely tuberculate. 

 Fingers pointed. 



Paraxanthjas (part), p. 465. 



