296 BULLETIN 97^ UNITED STATES NATIONAL MUSEUM. 



Mandeville; Henderson and Simpson; 3 males (18573). 



Near Kingston Harbor; T. H. Morgan; 1 female holotype (17'281). 



Mountain Spring, St. Andrew; P. W. Jarvis; 1 female (19053). 



Yallahs River, St. Andrew; J. E. Duerden, collector; specimens 

 returned to him. 



Clyde Spring, Blue Mountains ; altitude 4,500 feet ; C. B. Wilson ; 

 8 males, 10 females (42889). 



Jamaica; altitude 4,000 feet; June 10, 1910; E. A. Andi-ews; 1 

 male, 1 female (41752). 



SESARMA (SESARMA) JARVISI Rathbun. 



Plate 81. 



Sesarma (Sesarma) jarvisi Rathbun, Proc. U. S. Nat. Mus., vol. 47, 1914, 

 p. 124, pi. 7 (type-locality. Mount Diablo, St. Anns, .Tamaicn ; holotype 

 male, Cat. No. 24941, U.S.N.M.). 



Diagnosis. — Narrowed anteriorly. Sides of front oblique. Merus 

 of third leg about three times as long as wide. 



Description. — Carapace about four-fifths as long as wide, narrowed 

 anteriorly, rather flattened; regions and supra-frontal lobes well 

 marked, outer pair of lobes very narrow. Surface irregularly punc- 

 tate and sparingly covered with lumps each of which bears the 

 stumps of tufts of hair. The oblique ridges usually foimd on the 

 branchial regions are few and are broken into short irregular lines. 



Front a little less than half as wide as carapace, diminishing in 

 width below, lower margin convex in front view, bilobed in dorsal 

 view. Lateral tooth well-marked, blunt. 



The chelipeds in the small type male are not much enlarged. The 

 outer surface of arm and wrist are finely rugulose, margins of arm 

 finely granulate or denticulate and not prominent. The chelae are 

 elongate (the specimen is perhaps not full grown) ; manus rough 

 with a few scabrous granules outside, a sharp crenulated ridge above. 

 Fingers irregularly toothed within, nearly meeting; upper surface 

 of dactylus finely spinulous almost to the tip. 



Legs very slender, spine of merus acuminate, surface scabrous, 

 sparingly hairy. Third leg about two and one-half times as long as 

 carapace, its merus a little over three times as long as wide. 



Measurements. — Male holotype, length of carapace 10.7, width of 

 same 12.7, anterior width 10.7, width of front 5.2 mm. 



Range. — Jamaica, in the interior. 



Material exatrdned. — Mount Diablo, St. Anns, Jamaica ; P. W. 

 Jarvis; 1 male holotype (24941). Jamaica; received from Chicago 

 Acad. Sci.; 1 female (32440). 



