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Crabs of the Gulf of Mexico 133<br />
Caribbean coast of Colombia; Ceara to Pernambuco, Brazil; eastern Atlantic,<br />
from Senegal to Zaire.<br />
Habitat: burrows in marshy marine areas; among rocky and stony areas of<br />
the intertidal zone and up to the high tide line.<br />
Remarks: Felder (1973a) provided the only other specific Gulf record in addition<br />
to the previous record for the Florida Keys. HartnoU (1965b) commented<br />
on the ecology of this crab in Jamaica. Listed from Brazil by Coelho and Ramos<br />
(1972) and Fausto Filho (1974).<br />
Sesarjna Say, 1817<br />
Subgenus Holomelopus H. Milne Edwards, 1853<br />
Sesarma (Holomelopus) americanum Saussure, 1858 (Mem. Soc. Hist. Nat.<br />
Geneve 14: 441)<br />
As 5. tampicense—Bathbun, 1918, p. 307, text-fig. 151, pi. 88,<br />
AsS. americanum—Chace & Hobbs, 1969, p. 178, figs. 62a-f.<br />
Range: Tampico, Me.xico; St. Thomas, Virgin Islands.<br />
Habitat: soft mud, along river banks.<br />
Remarks: Chace and Hobbs (1969) determined that S. tampicense Rathbun<br />
was a junior synonym of 5. americanum Saussure. Behre (1950) tentatively<br />
listed the species from Louisiana (as S. tampicense), but noted that Chace had<br />
examined the specimens and preferred not to record the species as indicated.<br />
Abele (1972b) mentions the similarities betv\'een several of the western Atlantic<br />
members of the genus; he notes the distinct differences between S. angustipes<br />
Dana and S. americanum.<br />
Sesarma (Holomelopus) anguslipes Dana, 1852.<br />
This species was restricted by Abele (1972b) to the specimens from Brazil<br />
and Trinidad; refer to his paper for a discussion of synonymy. Material listed<br />
under this name by Rathbun (1918, p. 331) was synonymized with S. roberti<br />
by Chace and Hobbs (1969, p. 184).<br />
Sesarma (Holomelopus) benedicli Rathbun, 1897 (Proc. Biol. Soc. Washington<br />
11: 90)<br />
Bathbun, 1918, p. 316, pi. 93; Holthuis, 1959, p. 248, fig. 62; Abele, 1973, p. 379,<br />
figs. lA, IG.<br />
Range: Key West, Florida; Guyana and Surinam; Bra2;il.<br />
Habitat; under wood and stones on banks of brackish and almost freshwater<br />
streams.<br />
Remarks: The female specimen from Key West (MCZ 6236) listed by Rathbun<br />
(1918) is the only Gulf of Mexico record; all others are from South America.<br />
Ecological notes were provided by Holthuis (1959).<br />
Sesarma (Holomelopus) cinereum-(Bosc, 1802) (Hist. Nat. Crust, vol. 1,<br />
an X, p. 204)<br />
Common Names: Square-backed Fiddler; Wharf Crab; Wood Crab; Friendly<br />
Crab