. Bulletin - United States National Museum. Science. THE SPIDER CRABS OF AMERICA 497 Caldera, Chile; Mav 16, 1872; U. S. C. S. S. Hassler; 1 male (1932, M. C. Z.). West coast of South America; 1858; Moller, collector; 1 specimen (Copenhagen Mus.)- Guadeloupe; specimens described by A. Milne Edwards (Paris Mus.). Additional record.—Bay of St. Elena, Ecuador (Nobili). MICROPHRYS PLATYSOMA (SUmpson) Plate 176, figs. 1 and 2 Milnia platysoma Stimpson, Ann. Lye. Nat. Hist. New York, vol. 7, 1860, p. 180 (tj'pe-locality, Cape St. Lucas; type not extant). Microphrys platysoma A. Milne Edwards, Crust.
. Bulletin - United States National Museum. Science. THE SPIDER CRABS OF AMERICA 497 Caldera, Chile; Mav 16, 1872; U. S. C. S. S. Hassler; 1 male (1932, M. C. Z.). West coast of South America; 1858; Moller, collector; 1 specimen (Copenhagen Mus.)- Guadeloupe; specimens described by A. Milne Edwards (Paris Mus.). Additional record.—Bay of St. Elena, Ecuador (Nobili). MICROPHRYS PLATYSOMA (SUmpson) Plate 176, figs. 1 and 2 Milnia platysoma Stimpson, Ann. Lye. Nat. Hist. New York, vol. 7, 1860, p. 180 (tj'pe-locality, Cape St. Lucas; type not extant). Microphrys platysoma A. Milne Edwards, Crust. R6g. Mex., 1875, p. 62.— Rathbun, Bull. U. S. Fish Comm., vol. 20, for 1900, pt. 2 (1901), p. 72 (part; not Atlantic specimens); Proc. U. S. Nat. Mus., vol. 38, 1910, pp. 535 and 574, pi. 50, fig. 3 (part: only Lower California specimens). Pisoides ? celatus Lockington, Proc. California Acad. Sci., ?ol. 7, 1876 (1877), p. 66 [4], (type-localities. La Paz, ^Slulcge Bay, Port Escondido, San Jose Island, all in the Gulf of California; types not extant). Microphrys depressa Streets and Kingsley, Bull. Essex Inst., vol. 9, 1877, p. 103; not Fisheria depressa Lockington, 1877. Microphrys error Kingslet, Proc. Boston Soc. Nat. Hist., vol. 20, 187?, p. 145 (type-locality. Lower California; type not extant). Diagnosis.—Two laminiform processes on antero-lateral wall of carapace. Two branchial spines, one at lateral angle, the other in a transverse line with same. A lobe on mar- gin of basal antennal segment behind antero-external spine. Description.—Carapace depressed, tu- berculate and granulate; areole at inner angle of branchial region very finely gran- ulate; two laminiform processes on the antero-lateral wall, one on the hepatic re- gion, the other on the branchial region, the latter not projecting in an imbricated | /^ -'^ V-> manner. The surface of the hepatic proc- ' ^= . ess is in one plane, with the anterior end acute and projecting fonvard; there may be, however,
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