248 BULLETIN 152, UNITED STATES NATIONAL MUSEUM 



St. Thomas, Virgin Islands; specimens in Paris Museum and in 

 Copenhagen Museum. 



St. John, Virgin Islands; 2.5 fathoms; in crevice between coral and 

 encrusting alcyonarian; July 10, 1915; station 8; Clarence R. Shoe- 

 maker, for Carnegie Institution; 1 female (56381). 



Guadeloupe; specimen in Paris Museum. 



Marie Galante; specimen in Paris Museum. 



Martinique; specimen in Paris Museum. 



Needham's Point, Barbados; May 18. 1918; Barbados-Antigua 

 Expedition, State University of Iowa; 1 male (58044), 1 ovigerous 

 female (S.U.I.). 



Curagao; 1920; C. J. van der Horst: West Punt; May 14; 3 males, 1 

 female (Amsterdam Mus). Caracas Bay; May 5; 1 male (56906). 



Bermudas: 1876-1877; G. Brown Goode; 1 female (43048). 

 Hungry Bay; July-September; F. G. Gosling; 4 males, 4 females 

 (25440). 



Locality unknown; Herbst's type-specimen (Berlin Mus.). 



PLATYPODIA ROTUNDATA (Stimpson) 



Plate 102, Figures 1-3 



Atergaiis roiundatus Stimpson, Ann. Lye. Nat. Hist. New York, vol. 7, 1860, p. 



202 [74] (type-locality, Cape St. Lucas; cotypes in M.C.Z.). 

 Lophactaea roiundata A. Milne Edwards, Nouv. Arch. Mus. Hist. Nat., Paris, 



vol. 1, 1866, p. 250; Crust. R6g. Mex., 1879, p. 243; 1880, pi. 44, fig. 2. 

 Lophactaea rotunda [by error] Spence Bate, Zool. Rec. for 1866 (1867), p. 222. 

 Atergatis cristatissimo Lockington, Proc. California Acad. Sci., vol. 7, 1876 



(1877), p. 41 [1] (type-locality. La Paz, Lower California; type not extant). 

 Platypodia rotundata Rathbun, Proc. U. S. Nat. Mus., vol. 38, 1910, p. 584. 



Diagnosis. — Carapace coarsely granulate on and near the margins. 

 Mesogastric region narrowing regularly to a point in front except for a 

 slight constriction at middle. Antero-lateral rim narrow. Palm 

 short and high. 



Description. — Carapace narrower than in spectahilis, equally convex 

 posteriorly and anteriorly, areolated and granulated, the granules 

 extending entirely around the marginal areas and especially coarse on 

 the branchial regions which they almost entirely cover. Crest of 

 antero-lateral margin narrow, indistinctly quadrilobate, the lobes 

 separated by slight notches and furrows ; the crest granulate especially 

 on its margin. Postero-lateral side very short. Hand of chelipeds 

 short, with a liigh lamelliform superior crest; outer surface granulate 

 above, ornamented with four or five granulate costae. 



Color. — Of dried specimens, bright vermilion red throughout except 

 on fingers which are brown (Lockington). 



Measurements. — Male (46078), length of carapace 7.3, width 10.7 

 mm. Sex not given, length 12.7 mm. (0.5 inch), width 17.7 mm. 

 (0.7 inch) . (Lockington) . 



Range. — La Paz, Gulf of California, Mexico, to Ecuador. 



