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Genus BAIOMYS True (1894). 

 Baiomys True, Proc. U. S. Nat. Mus., XVI, p. 758, Feb. I. 1894. 



Ascending ramus of mandible short and erect. Condyle terminal. 

 Coronoid process well developed, uncinate, and near the condy] . 



Size very small, tail short. Plantar tubercles, six. Soles (fig. 67) 

 hairy (True). 



Fig. 67.— Baiomys taylori. Under sceface of feet, a, forefoot; '<. hindfoot. 



Type. Hesperom/ys ( Vesperimus) taylori Thomas, from San Diego, 

 Texas. 



BAIOMYS TAYLORI (Thomas). 

 TAYLOR MOUSE. 



Hesperomys (Vesperimus) taylori Thomas, Ann. and Mag. Nat. Hist., ">tli ser., XIX, 



1887, p. 66 (original description). 

 Cricetus (Vesperimus) taylori, Thomas, Proc. Zool. Soc. Lond., 1888, |>. I Hi. 

 Sitomys (Baiomys) taylori, True, Proc. U. S.Nat. Mus., XVI, 1894, ]>|>. 757, 758. 



Allen, Bull. Am. Mus. Nat. Hist., VI, p. 181, May 31, 1894. 

 Peromyscus (Baiomys) taylori, Allen, Bull. Am. Mus. Nat. Hist., VIII, p|>. 65, 66. 



Type-local id/. San Diego, southern Texas. (Type in the British 

 Museum.) 



Geographical Irangt . Tamaulipan Tropical Tract ( Rockport . Browns- 

 ville, San Diego, and 15 miles south of San Antonio. Texas). 



Fulls. Baiomys taylori. Crowns of molar teeth, showing progressive stages of wear. 



a C AND' LOWER, b, d, AND /, UPPER SERIES. 



Description. — One of the smallest known North American mice. 

 In no wise closely related to any other described species from the 

 United States, but closely related to Sitomys musculus Merriam 

 ( = Baiomys musculus) , from near Colima City, Mexico." Length of 



a Described in Proceedings of the Biological Societ) of Washington, VIII, pp. 170, 171. 

 September 29, L892. 



