THE GRAPSOID CRABS OF AMERICA. 313 



Inner margin of arm produced in a triangular lamina. Surface of 

 cheliped very rough, the palm covered with coarse scaly granules, 

 which are continued partly on the fingers. There is an oval gape at 

 the base of the fingers. 



Third leg twice as long as the carapace, its merus two and two- 

 thirds times as long as wide. The merus joints do not diminish in 

 width from the middle to the distal end. 



Color. Dull blackish; claws orange red; eyes green (A. H. Ver- 

 rill). 



Measurements. Male holotype, length of carapace 26.5, greatest 

 width of same '26.3, anterior width 24.7, width of front 14.1 mm. 



Habitat. Lives on steep muddy banks of rivers in small deep 

 holes, which it burrows in the soft earth at the water's edge and into 

 which it retreats when alarmed. Found in most of the rivers of 

 Jamaica where the water is brackish (Jarvis) ; also on mangroves. 



Range. West Indies. Turbo, Panama (M. C. Z.). Also Goree, 

 Senegal. 



Material examined. 



Baracoa, Cuba; Feb. 1, 1902; Wm. Palmer; 1 female (25550). 



Rio Cobre (St. Catherine), Jamaica; P. W. Jarvis; 1 male (holo- 

 type of S. bromeliarum) , 1 female (19406); 2 males, 2 females 

 (19418). 



Interior of Jamaica; E. A. Andrews; 1 female (17003). 



Santo Domingo, West Indies; 1878; W. M. Gabb; 1 male (3193). 



Porto Rico: Biol. Survey, U. S. Dept. Agriculture; Anasco and 

 Bayamon, in bird stomachs; specimens in collection of Biol. Sur- 

 vey. Gundlach, collector (4801, Berlin Mus.). 



Dominica, West Indies; A. H. Verrill; 1 male (32715). 



Laiou, Dominica; J. G. Ramage; 12 specimens (88.26, Brit. Mus.). 



Martinique; M. A. Rousseau; 2 females (Paris Mus.). 



Port Castries, St. Lucia; Albatross; 2 males, 1 female (22108). 



Goree, Senegambia; M. Robert; 1 male, 1 female (cotypes), 

 (20311). 



SESARMA (HOLOMETOPUS) FESTAE Nobili. 



Sesarma (Holometopus) festae NOBILI, Boll. Mus. Zool. Anat. Couip. R. 

 Univ. Torino, vol. 16, No. 415, 1901, p. 42 (type-localities, Tnmaco, 

 Colombia, and Esmeraldas, Ecuador; types in Turin Mus.). 



Diagnosis. Near angustum. Carapace wider than long. Upper 

 margin of hand with a small, denticulated crest. 



Description. Lateral margins of carapace almost a straight line, 

 spreading a little posteriorly. Tooth at outer angle of orbit acute, 

 directed forward and slightly inward. Front vertical, rather high, 

 lower border with a deeply sinuous crest; frontal lobes subequal, 



