522 BULLETIN 152, UNITED STATES NATIONAL MUSEUM 



and stouter clavate setae are dispersed among the short ones which 

 clothe the general surface. Margin of frontal lobes oblique and 

 slightly concave; at the outer ends there is a small blunt subrectangular 

 tooth. Antero-lateral margin with four teeth (including the orbital), 

 similar to the dorsal tubercles. There is also a subhepatic and a 

 subbranchial tubercle. Two or three, occasionally four, projecting 

 teeth on lower margin of orbit between the large inner tooth and the 

 outer orbital tooth. 



Lower and distal two-thirds of outer surface of larger palm and 

 half or less of smaller palm smooth and naked; in the young the 

 smaller palm is hairy all over its outer face. Fingers also smooth; 

 only a few setae at base of dactyl. 



Variations. — There is considerable variation in the shape of teeth 

 and tubercles. In typical reticulatus (pi. 209, figs. 4 and 5) the 

 tubercles are depressed and their surface slightly convex, the lateral 

 teeth are similar lobes or tubercles flattened in a vertical plane, that is, 

 perpendicular to the dorsum. In some specimens the lateral teeth 

 are dentiform, depressed, forming an acute edge corresponding to 

 and continuous with the edge of carapace; this is forma tessellata = 

 forma meridionalis (plate 210, figs. 7-11). In occasional specimens 

 some of the tubercles are fungiform or mushroomlike; this is forma 

 fragosa (plate 210, figs. 1-6). 



Measurements. — Male (60220), entire length of carapace 10.8, entire 

 width of same 15.3, fronto-orbital width 9.5, width of front 4.2 mm. 

 Male (48319), entire length of carapace 14, entire width of same 19, 

 fronto-orbital width 11, width of front 5.2 mm. 



Range. — From Jamaica and Porto Rico to Patagonia. Panama 

 (Pacific). 



Material examined. — 



WEST INDIES AND CARIBBEAN SEA.— Jamaica: P. W. 

 Jarvis; specimens returned to sender. March 1-11, 1884; Albatross; 

 1 male, 2 females (18538); forma fragosa. Drunken Man's Key, off 

 Kingston Harbor; May 6, 1893; R. P. Bigelow; 1 female (17993); 

 forma tessellata. 



Porto Rico; 1899; Fish Hawk: 1 male, 1 female (24251). Mayaguez; 

 January 19 and 20; 2 males (24249). Mayaguez Harbor; January 20; 

 1 male (24253). Playa de Ponce Reef; February 1; 1 male (24252). 

 Arroyo; February 4; 1 male, 1 female (24250). Puerto Real; 1 young 

 female (24248). 



St. Thomas: January 17-24, 1884; Albatross; 4 males (18515). 

 1915; C. R. Shoemaker, for Carnegie Institution: St. Thomas Har- 

 bor, on the bottom of small boat, July 10, 1 female (60219); Gregerie 

 Bay, % to 2% fathoms, Co. R. S. seaweed, station 7, July 7, 1 male, 

 4 females (60218). St. Thomas; Hassler Exped.; 1 ovigerous female 

 (2457, M.C.Z.). 



