DECAPOD CRUSTACEANS OF THE WEST INDIES 219 



portion brown; carpus and propodus with dark brown markings 

 proximally and distally, especially those of second and third pereiopods. 



As is true for U. burgersi, considerable variations occur in the colora- 

 tion of the carapace of this species. Many of the specimens available 

 to us show almost no trace of a color pattern except for the light 

 margmal area; the remainder is rusty brown and black with a few light 

 gray areas in worn portions. 



Material examined. — The Dominican collections contain 98 males 

 (carapace lengths 5.4-18.3 mm) and 65 females (cl 4.8-18.6 mm). 



Ecological notes. — This species is known from a single locality 

 on Dominica, the large mudflat south of the Indian River at Ports- 

 mouth. The description of the locality and of the burrows of this crab 

 are recounted under "Ecological notes" for Uca burgersi. 



Distribution. — British Honduras to Surinam (Dominica, Tobago, 

 Trinidad). 



Dominica Station: 112 (0-5 ft.). 



Remarks. — As suggested by Holthuis (1959), the specimen from 

 Belize, British Honduras, used to illustrate Uca mordax by Rathbun 

 (1918, pi. 134: figs. 3, 4) is apparently U. vocator. It is about half again 

 as large as the holotype of U. murifecenta, but the form of the first 

 pleopod differs from Crane's figures only as might be expected in an 

 older individual. 



Genus Ucides 



92. Ucides cordatus (Linnaeus) 

 Figures 75, 76 



Cancer cordatus Linnaeus, 1763, p. 414 [type-locality: Surinam]. 



Cancer Uca Linnaeus, 1767, p. 1041 [type-locality: America]. 



Ocypode cordate.— LatreiUe, 1802-1803, p. 37, pi. 46: fig. 3. 



Ocypode fossor Latreille, 1802-1803, p. 38 [type-locality: Cayenne, French 



Guiana]. 

 Ocypode Uca. — Latreille, 1806, p. 31. 

 Gecarcinus uca. — Lamarck, 1818, p. 251. 

 Gecarcinus fossor. — Desmarest, 1825, p. 114. 

 Uca uca. — Latreille, 1831, p. 338. 

 Ocypode (Uca) uca. — De Haan, 1835, p. 29, pi. c. 

 Uca lavis H. Milne Edwards, 1837, p. 22 [type-locality: Antilles]. 

 Uca cordata. — White, 1847, p. 31. 



Uca pilosipes Gill, 1859, p. 43 [type-locality: St. Thomas], 

 Uca laevis. — Kappler, 1881, p. 143. 

 Ucides cordatus.— nathbun, 1897c, p. 25; 1918, p. 347, text-fig. 158, pis. 110-113, 



pi. 159: figs. 3, 4.— Holthuis, 1959, p. 250, fig. 63. 

 Oedipleura cordata. — Ortmann, 1897, p. 336. 



Diagnosis. — Carapace transversely subelliptical, slightly less than 

 four-fifths as long as wide, strongly convex longitudinally, nearly 



317-180—69 16 



