148 ORYZOMYS. REITHRODONTOMYS 



Measurements. Average total length, 284 ; tail vertebras 144; 

 hind foot, 31.7; ear, 10. 



b.—coLoratics. {Oryzomys), Bangs, Proc. Bost. Soc. Nat. Hist., i8g8, 

 p. 189. 



Type locality. Cape Sable, Florida. 



Geogr. Dhtr. Southern portion of Peninsula of Florida. 



Genl. Char. Size large; color reddish brown. 



Color. Above reddish brown, darkest on rump and paler on 

 sides, with a mixture of black on head and back; beneath white, 

 often tinged with cinnamon; hairs at base plumbeous; tail dusky, 

 whitish beneath towards base; feet whitish; ears dusky. 



Measurements. Total length, 301.6; tail vertebra-, 150; hind 

 foot, 35. 



49. Reitlirodontomys. 



I. LZI; M. ^' = 16. 

 I— • 3—3 



J. A. Allen. On the species of the genus Reithrodontomys. Bull. 

 Am. Mus. Nat. Hist. N. Y., 1895, vii., p. 107. 



Reithrodontomys. Giglioli, Richer, intorn. alia Distrib. Geog. Gen. , 



Roma, 1873, p. 160. 

 Reithrodon. Le Conte (nee Waterh.), Proc. Acad. Nat. Scien. 



Phil., 1853, p. 413. 

 Reithrodon. Baird (nee Waterh.), N. Am. Mamm., 1857, p. 447. 

 Ochetodon. Coues, Proc. Acad. Nat. Scien. Phil., 1874, p. 184. 



Body slender; size very small; tail as long as body without the 

 head; anterior face of upper incisors with a deep longitudinal groove, 

 nearly as broad as the face of the tooth; lower incisors simple; ante- 

 rior upper molar with four roots, three large, one very small. The 

 lower half of the descending ramus is abruptly twisted inwards nearly 

 at a right angle to the lower border of the process. Anteorbital for- 

 amen is situated in the zygomatic portion of the maxillary, and is 

 almost circular above, contracting to a slit below. Palate terminates 

 opposite the posterior border of last molars, as a transverse shelf; 

 bullffi large, widely separated, but approximating anteriorly. 



205. lecontei. (Afus), Aud. & Bachm. Journ. Acad. Nat. Scien. Phil., 

 1842, p. 307. 

 ? humulis, Aud. & Bachm. Proc. Acad. Nat. Scien. Phil., 1841, 



P- 97- 

 ? carolinensis, Aud. & Bach. Journ. Acad. Nat. Scien. Phil., 1842, 

 p. 306. 



