204 BULLETIN 79, UNITED STATES NATIONAL MUSEUM. 



t*Hodomys vetulus Merriam. 



1894. Hodomys vetulus Merriam, Proc. Acad. Nat. Sci. Phila- 

 delphia, p. 236. September 24, 1894. 

 Type Locality. — Tehuacan, State of Puebla, Mexico. 



Genus XENOMYS Merriam. 



1892. Xenomys Merriam, Proc. Biol. Soc. Washington, vol. 7, 

 p. 160. September 29, 1892. Type, Xenomys nelsoni Mer- 

 riam. 



t*Xenomys nelsoni Merriam. 



1892. Xenomys nelsoni Merriam, Proc. Biol. Soc. Washington, 

 vol. 7, p. 161. September 29, 1892. 



Type Locality. — Hacienda Magdalena, between the city of 

 Colima and Manzanillo, State of Colima, Mexico. 



Subfamily Microtinae.^ 



Genus SYNAPTOMYS Baird.^ 



1857. Synaptomys Baird, Mamm. N. Amer., p. 558. Type, 

 Synaptomys cooperi Baird. 



Subgenus Synaptomys Baird. 



t*Synaptomys cooperi Baird. 



1857. S[ynapto7nys] cooperi Baird, Mamm. N. Amer., p. 558. 

 1885. Synaptomys cooperi True, Proc. U. S. Nat. Mus., vol. 7 

 , (1884), p. 596. 1885. 



1893. Synaptomys stonei Khoads, Amer. Nat., vol. 27, p. 53. 

 January, 1893. (Mays Landing, Atlantic County, New 

 Jersey.) 



Type Locality. — Unknown, probably northern New Jersey. 



*Synaptomys fatuus Bangs. 



1896. Synaptomys fatuus Bangs, Proc. Biol. Soc. Washington, 



vol. 10, p. 47. March 9, 1896. 

 Type Locality. — ^Lake Edward, Quebec, Canada. 



Regarded by Rhoads (Proc. Acad. Nat. Sci. Philadelphia, 1897, p. 306, 

 June, 1897) as a form of S. cooperi. 



t*Synaptomys helaletes helaletes Merriam. 



1896. Synaptomys helaletes Merriam, Proc. Biol. Soc. Wash- 

 ington, vol. 10, p. 59. March 19, 1896. 

 Type Locality. — Dismal Swamp, Norfolk County, Virginia. 



According to Rhoads (Proc. Acad. Nat. Sci. Philadelphia, 1897, p. 305, 

 June, 1897), this should stand as Syiwptomys cooperi stonei (Rhoads). 



1 Genera and subgenera revised by Miller, North Amer. Fauna, No. 12, July 23, 1896. 



2 Revised by Meiriam, Proc. Biol. Soc. Washington, vol. 10, pp. 55-64, March 19, 1S96, but so many 

 species have subsequently been described that the forms are here entered alphabetically. 



