THE CANCROID CRABS OF AMERICA 499 



1 immovable finger (60959). Fish No. 179, schoolmaster, Neomaenis 

 apodus (Walbaum), off N. end of Loggerhead Key; June 9; 2 chelipeds 

 (60961). Fish No. 246, common grunt, Haemulonplumieri (Lacepede), 

 off N. end of Loggerhead Key; June 9; 1 cheHped (60960). Fish 

 No. 622, sailors choice, Haemulon parra (Desmarest); June 23; 1 

 chela (60958). 



Tortugas: S. end of Loggerhead Key; from large rock 2 feet by 

 18 inches by 18 inches; August 10, 1924; W. H. Longley; 1 young 

 male (62557); gift of Carnegie Institution. 



PILUMNUS GRACILIPES A. Milne Edwards 



Plate 201, Figures 8 and 9 



Pilumnus gracilipes A. Milne Edwards, Crust. Reg. Mex., 1880, p. 288, pi. 

 50, figs. 3, 3o (type-locality, off Barbados, 100 fathoms; type in Museum of 

 Comparative Zoology) . 



Diagnosis. — Carapace narrow, subquadrilateral, short-hairy. A 

 spine at middle of upper margin of orbit. Legs very long and slender. 



Description. — Carapace thicker and more quadrilateral than usual 

 in Pilumnus, covered with pubescence and short, stiff bristles which 

 are yellow with dark reddish-brown tips (in spirit) and are so scattered 

 as not to conceal details of carapace. Regions not deeply outlined, 

 surface without granulations and spines, but a httle rugose from the 

 punctae in which the hairs are inserted. Front wide, lobes spinulous, 

 Httle arched forward. Inner superior angle of orbit with two spines. 

 Upper border of orbit with a curved spine at middle and 3 or 4 spini- 

 form granules between it and the postorbital spine; lower border 

 armed with about four spines and terminated by a bispinose inner 

 angle. Some spiniform tubercles and numerous granules on sub- 

 hepatic and pterygostomian regions. Antero-lateral margin short, 

 armed with four spines including that at the orbital angle. 



Chelipeds unknown. Ambulatory legs extraordinarily long and slen- 

 der, margins sparsely hairy; merus, carpus and propodus armed above 

 with a row of rather long, slender spines; dactyl remarkably long. 



Measurements. — Female holotype, ovigerous, length of carapace 

 16, width of same 20 mm. 



Range. — Barbados, 100 fathoms. Known only from the unique 

 type-specimen. 



Material examined.—OS Sandy Bay, Barbados; 100 fathoms; 

 1871; U. S. Coast Survey Steamer Hassler; 1 female holotype (2974, 

 M. C. Z.). 



PILUMNUS MARSm Rathbun 



Pilumnus marshi Rathbun, Bull. U. S. Fish Comm. for 1900, vol. 20, pt. 2, 

 1901, p. 41, text-fig. 8 (type-locality, off St. Thomas, 20-23 fathoms; type, 

 Cat. No. 23771, U.S.N.M.). 



