Vol. 35, pp. 103-104 October 17, 1922 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



NEW SPECIES OF CRABS FROM CURAgAO. 

 BY MARY J. RATHBUN. 



The specimens described were obtained at Curasao by Prof. 

 C. J. van der Horst, of the Zoological Laboratory, Amsterdam, 

 and form part of a larger collection, a list of which will be pub- 

 lished by the Dutch Zoological Society. The types of the new 

 species are the property of the Amsterdam Museum. 



Randallia curacaoensis, sp. nov. 



Holotype. — Female, ovigerous; Spanish Water, Curagao. 



Measurements. — Female holotype, length of carapace 8.4 mm., width 

 7.5 mm. 



Description. — Carapace subcircular, covered, except on anterior and 

 antero-lateral portions, with large, unequal, close-set pustulous granules ; 

 intestinal region well defined, cardiac region ill defined, gastric and hepatic 

 regions not delimited. The tuberculate antero-lateral margin terminates 

 at the swollen pterygostomian protuberance. Intestinal region without 

 lobes or spines. Front bilobed, median point not visible from above and 

 exceeded by the projecting epistome. Chelipeds covered with flat granu- 

 lations, coarse on the merus, becoming gradually finer until near the fingers. 

 Legs slender, finely granulate. Abdomen and sternum coarsely granulate. 



Xanthias vestitus, sp. nov. 



Holotype. — Male; Spanish Harbor, Curagao. 



Measurements. — Male holotype, length of carapace 4.6 mm., width 

 6.4 mm. 



Description. — Covered, except ends of fingers, with a very short feltlike 

 pubescence which conceals granules and obscures antero-lateral teeth. 

 When the felt is removed, the regions are fairly well indicated, a deep H at 

 middle of carapace. Fine sparse granules on marginal regions. Four 

 shallow, blunt antero-lateral teeth besides angle of orbit. Fronto-orbital 

 distance a little over half as great as width of carapace, front less than a 

 third the width of carapace. Carpus and manus of chelipeds covered with 

 granules, fingers light-colored, fixed finger horizontal except at tip. Legs 

 smooth. 



iPublished by permission of C. J. van der Horst. 



21— Peoc. Biol. Soc. Wash., Vol. 35, 1922. (103) 



