NOETH AMERICAN RECENT MAMMALS. 369 



Genus (ECOMYS Thomas. 



1906. (Ecomys Thomas, Ann. and Mag. Nat. Hist., ser. 7, vol. 

 18, p. 444. December, 1906. Type, Rhipidomys henevolens 

 Thomas. 



CEcomys trabeatus (G. M. Allen and Barbour). 



1923. CEcomys trabeatus G. M. Allen and Barbour. Bull. Mus. 



Comp. Zool., vol. 65, p. 262. February, 1923. 

 Type Locality.— Rio Jesusito, eastern Panama. 



Genus SIGMODON Say and Ord.'" (Cotton-rats.) 



1825. Sigmodon Say and Ord, Journ. Acad. Nat. Sci. Phila- 

 delphia, vol. 4, pt. 2, p. 352. Type, Sigmodon hispidum Say 

 and Ord. 



hispidus-group. 



* Sigmodon hispidus hispidus Say and Ord. 



1825. S[igmodon] Jiispidum Say and Ord, Journ. Acad. Nat. Sci. 

 Philadelphia, vol. 4, pt. 2, p. 354. 



1885. Sigmodon hispidus True, Proc. U. S. Nat. Mus., vol. 7 

 (1884), p. 598. 1885. (Part.) 



Type Locality. — St. Johns River, Florida. 



Range. — North Carolina to northern Florida and west to south- 

 ern Louisiana, in Austro riparian zone. 



*Sigmodon hispidus littoralis Chapman. 



1889. Sigmodon hispidus littoralis Chapman, Bull. Amer. Mus 



Nat. Hist., vol. 2, p. 118. June 7, 1889. 

 Type Locality. — East Peninsula, opposite Micco, Brevard 



County, Florida. 

 Range. — Eastern part of the Peninsula of Florida, from Lake 



Harney to the Everglades. 



*Sigmodon hispidus spadicipygus Bangs. 



1898. Sigmodon hispidus spadicipygus Bangs, Proc. Boston Soc. 



Nat. Hist., vol. 28, p. 192. March, 1898. 

 Type Locality. — Cape Sable, Monroe County, Florida. 

 Range. — -The extreme southern part of the Peninsula of Florida. 



Sigmodon hispidus exsputus G. M. Allen. 



1920. Sigmodon hispidus exsputus G. M. Allen, Journ. Mamm., 



vol. 1. p. 236. December 4, 1920. 

 Type Locality. — Big Pine Key, one of the southern Florida. 

 Keys, Monroe County, Florida. 



•'Revised by BaiJey, Proc. Biol. Soc. Washington, vol. 15, pp. 101-H6, June 2, 1902. 

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