. Bulletin - United States National Museum. Science. THE SPIDER CRABS OF AMERICA 151 EPIALTUS LONGIROSTRIS Stimpson Epialtus lojigirostris Stimpson, Ann. Lye. Nat. Hist. New York, vol. 7, 1860, p. 199 (type-localitj-, St. Thomas; cotype in Paris Mus.); Bull. Mus. Comp. ZooL, vol. 2, 1871, p. 128.—A. Milne Edwards, Crust. R4g. Mex., 1878, p. 141, pi. 27, figs. 5-5c.—Kingsley, Proc. Acad. Nat Sci. Philadelphia, 1879, p. 385. Diagnosis.—Rostrum very narrow, truncate. Sides of carapace deepl}^ bilobed. Arm cylindrical, hand long and narrow, fingers thick. Description.—Postgastric and cardiac regio
. Bulletin - United States National Museum. Science. THE SPIDER CRABS OF AMERICA 151 EPIALTUS LONGIROSTRIS Stimpson Epialtus lojigirostris Stimpson, Ann. Lye. Nat. Hist. New York, vol. 7, 1860, p. 199 (type-localitj-, St. Thomas; cotype in Paris Mus.); Bull. Mus. Comp. ZooL, vol. 2, 1871, p. 128.—A. Milne Edwards, Crust. R4g. Mex., 1878, p. 141, pi. 27, figs. 5-5c.—Kingsley, Proc. Acad. Nat Sci. Philadelphia, 1879, p. 385. Diagnosis.—Rostrum very narrow, truncate. Sides of carapace deepl}^ bilobed. Arm cylindrical, hand long and narrow, fingers thick. Description.—Postgastric and cardiac regions rather prominent. Carapace nearly as wide across hepatic as across branchial regions. Lateral sinus much deeper than in the three preceding species and deeper in male than in female. Hepatic lobe a little larger than branchial lobe, both acute. The two gastric tubercles are distinct. Preorbital angle strong, sharp; from it the rostrum rapidly narrows to a long, slender beak, which is rather thick, truncated at extremity, the anterior surface rectangular, about twice as wide as high. Post- orbital tooth obscure, not projecting; a tubercle on anterior margin of hepatic lobe. (Fig. 53,» Chelipeds without sharp margins; merus cylindrical; carpus with large tubercle on outer surface; palm elon- LONGIROSTRIS, MALE gatc, Uttlc comprcsscd, culargiug (48742), LEFT cHELiPED. THE CARAPACE IS slightly toward dlstal end; fingers ABOUT MM. LONG , " , , i j^ i . 1 short and very stout, bent down, a small oval gape at base in male. Ambulatory legs slender, without tufts of hair on propodites except a slight one on first pair. Measurements.—Male (48742), length (tip of rostrum lacking) , width mm. Female (43019), length 7, width mm. Range.^b'lorida, (Sarasota Bay and Key West), Cuba, Jamaica and St. Thomas. Material examined.— On reef Lavesos Italienos, opposite Cayo Lavesos, Cuba; 2 to 3 fathoms; Co. S. R.; station 14, Tomas Barrera Exped.;
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