514 BULLETIN 152, UNITED STATES NATIONAL MUSEUM 



St. Thomas; 1915; C. R. Shoemaker collector; Carnegie Institution 

 donor: Shore near town; June 30; 1 male (60213). Lagoons; July 7; 

 1 male (60214). 



Off St. Thomas; Sail Rock, W. by N. K N., 6 miles; 20-23 fathoms; 

 Co.; temperature, 25.8° C; February 6, 1899; station 6079, Fish 

 Hawk; 1 male (24371). 



Curasao: 1884; Albatross; 1 female (17913). 1920; C. J. van der 

 Horst: Caracas Bay; in coral; May 5, 1 female (Amsterdam Mus.); 

 April 23, 1 female (56900). Spanish Water; in Siderastrea, April 29, 

 1 female (Amsterdam Mus.); in Porites furcata, May 5, 1 male, 1 

 female, 1 young (Amsterdam Mus.). 



PILUMNUS PANNOSUS Rathbun 



Plate 207, Figures 4 and 5 



Pilumnus gemmatus A. Milne Edwards, Crust. Reg. Mex., 1880, p. 290, pi. 51, 

 figs. 4-46; not P. gemmatus Stimpson 1860. 



Pilumnus -pannosus Rathbun, Proc. U. S. Nat. Mus., vol. 19, 1896, p. 142 (type- 

 locality, Key West, Florida; type, Cat. No. 13814. U.S.N.M.); Bull. U. S. 

 Fish Comm. for 1900, vol. 20, pt. 2 (1901), p. 39. — A. Milne Edwards and 

 BouviER, Mem. Mus. Comp. Zool., vol. 47, 1923, p. 321. 



Diagnosis. — Tubercles of carapace concealed by dense hairy coat. 

 Three lateral teeth have spinuliform tips, orbital teeth end in truncate 

 spines. A large part of outer surface of palm smooth and bare except 

 in minor palm of female. 



Description. — Resembles P. gemmatus. Carapace wider and less 

 quadrate, entirely covered with a soft, thick, plushlike pubescence 

 which is not evenly distributed; here and there are longer, irregular, 

 club-shaped setae which give a very ragged appearance. This hairy 

 coat conceals the details of ornamentation but shows the lobulation 

 of the anterior part and the tubercles of the chelipeds. Anterior half 

 of carapace and upper surface of chelipeds and legs dotted with 

 beadlike tubercles. Frontal lobes subtriangular, granulate on the 

 margin, more advanced near median line; interspace V-shaped; outer 

 tooth triangular, acute. Upper margin of orbit with three truncate 

 spines, one at inner angle and two near the middle; a similar one at 

 outer angle; lower margin with a row of short, stout, truncate spines 

 or tubercles of unequal size and a V-shaped notch near outer angle. 

 The antero-lateral projections look like shallow lobes tipped with a 

 spinule until the pubescence is removed when they are seen to be 

 (with the exception of the exorbital spine) triangular, well-separated 

 spines with slender pointed tips directed forward and easily broken 

 off. A well developed subhepatic spine. 



Upper portion of hands tuberculate but usually a large part of 

 outer surface smooth and naked; extent of smooth bare space varying, 

 in adult males from half to nearly all of the outer surface in the major 

 palm and from one-third to one-half in the minor palm; in females 



