THE CANCROID CRABS OF AMERICA 521 



Egg Island, Bahamas; 1893; Biological Expedition, State Univer- 

 sity of Iowa; 1 male (Mus. S. U. I.). 



Porto Rico; 1899; Fish Haivk: Mayaguez; on coral reef; January 

 23; 1 male, 3 females (24378). Porto Real; January -27; 1 male, 

 2 females (24374). Boqueron Bay; on coral reef; January 28, 1 male, 

 2 females (24379). Ponce; February 1; 1 male (24380). Reefs at 

 Ponce; January 30; 2 males, 3 females (24375). Lighthouse reef, 

 Playa de Ponce, January 31, 1 female (24376) and February 1, 



4 males, 15 females (24377). Lighthouse reef, Arroyo; February 3; 



5 males, 2 females, 2 young (24381). Porto Rico; 1 male, 1 young 

 (24382). 



St. Thomas: Krebs collector; from Copenhagen Mus.; 1 male, holo- 

 type (19705). Albatross; 1 male (19893). 



St. John: 1 female (Copenhagen Mus.). 



Trinidad; Feb. 1878; Crosby collector; from Boston Society of 

 Natural History; 1 ovigerous female (57014). 



Caracas Bay, Curasao; 1920; C. J. van der Horst: Under stones 

 near shore; May 3; 2 males (Amsterdam Mus.). In coral; May 13; 

 1 male, 1 female (56901), 4 females (1 ovigerous) (Amsterdam Mus.), 



PILUMNUS RETICULATUS Stimpson 



Plate 209, Figures 4 and 5; Plate 210 



Pilumnus reticulatus Stimpson, Ann. Lye. Nat. Hist. New York, vol. 7, 1860, 



p. 214 [86] (type-locality, St. Thomas; type not extant). — Rathbun, Bull. 



U. S. Fish Comm. for 1900, vol. 20, pt. 2 (1901), p. 38. 

 Pilumnus tessellatus A. Milne Edwards, Crust. Reg. Mex., 1880, p. 295, pi. 51, 



figs. 2-2d (tj^pe-locality, Desterro, Brazil; type in Paris Mus.). 

 Pilumnus fragosus A. Milne Edwards, Crust. Reg. Mex., 1880, p. 296, pi. 52, 



figs. 1-1/ (type-locality, St. Thomas; type in Paris Mus.). 

 Pilumnus meridionalis Nobili, Boll. Mus. Zool. Anat. Comp. R. Univ. Torino, 



vol. 16, No. 402, 1901, p. 8 (type-locality. Mar del Plata, Argentina; type 



in Turin Mus.). 



Diagnosis. — Hairs reticulated, a single large tubercle in the inter- 

 stices. Frontal lobes oblique, concave. A few strong suborbital 

 teeth. Greater part of outer surface of major palm bare; at least 

 half of minor palm hairy. 



Descri'ption. — Carapace, upper surface of chelipeds, and also the 

 legs clothed with short, stout setae, closely arranged to form reticu- 

 lating lines inclosing small naked polygonal areoles which on the 

 anterior half of carapace and chelipeds are mostly each occupied by 

 a large tubercle projecting forward and flattened on its superior and 

 posterior surface. About eleven such tubercles on carapace excluding 

 marginal ones, and fifteen or more on each cheliped. On the legs 

 there are two tubercles at proximal end of carpus and one at distal 

 end of propodus; otherwise the naked cavities are unoccupied by 

 tubercles; about two areoles occupy wadth of leg. Some much longer 



