THE GRAPSOID CRABS OF AMEEICA. 419 



Mazatlan. Mexico; 1881; C. H. Gilbert; 2 males (5054). 

 Additional records. San Diego (Ortmann). San Bartolome Bay, 

 Lower California (Lockington). 



UCA SUBCYLINDRICA (Stimpson). 



Plate 155 ; plate 160, fig. 5. 



Gclasimus subcylindricus STIMPSON, Ann. Lye. Nat. Hist. New York, vol. 7, 

 18o9, p. 63 (type-locality, Matarnoras, Rio Grande; cotypes in M.C.Z.). 



Gelasimus subcylindricus SMITH, Trans. Connecticut Acad. Arts and Sci.. v 

 vol. 2, 1870, p. 137, pi. 4, figs. 6-66, 1870. 



I '<! puyilator ORTMANN, Zool. Jahrb., Syst., vol. 10, 1897, p. 352 (part). 



Diagnosis. Inner surface of palm without oblique ridge. Abdo- 

 men of male very wide. Carapace subcylindrical. 



Description. A larger species than U. stenodactylus. Carapace 

 longer in proportion to the width. Depressions shallow or obsolete. 

 Antero-lateral region less strongly curved downward. Front nearly 

 one-third width of carapace at antero-lateral angles, its marginal 

 carina well marked. Eyebrow 7 shallower, invisible in dorsal view. 

 Carapace widest behind the blunt and obtuse-angled antero-lateral 

 angles; side margins anteriorly straight and oblique; then faintly 

 marked by broken granulate lines. 



Large cheliped of male stouter than in U. stenodactylus. Merus 

 shorter than carapace ; granules of carpus few and scabrous ; those of 

 palm very coarse ever3 T where. Fingers little if any longer than palm, 

 moderately narrow, a longitudinal ridge runs along middle of the 

 pollex and is continued upon the palm ; several enlarged tubercles on 

 each finger. No oblique ridge across inner surface of palm, but the 

 surface distal to the carpal cavity is coarsely granulate. Merus of 

 first three pairs of ambulatory legs rather broad. Abdomen of male 

 very broad, all segments distinct. 



Measurements. Male (23655), length of carapace 12.5, width of 

 same 19 mm. 



Range. Texas and Mexico. 



Material examined. 



Corpus Christi, Texas; 1900; V. Bailey, Biol. Survey, U. S. Dept. 

 Agriculture; 1 male (23655). 



Xear Santa Rosa, Cameron Co., Texas ; 1891 ; William Lloyd, col- 

 lector; from U. S. Dept. of Agriculture; 1 male (17807). 



Matamoros, Mexico, on the Rio Grande; "L. B.," meaning per- 

 haps " left bank " ; M. Berlandier, collector ; deposited by Lieut. 

 Couch, U. S. Army; 1 male. 3 females, cotypes (M. C. Z.). 



Mexico; received from William Stimpson; 2 males (Paris Mus.) 

 Perhaps these also are cotypes. 



