NATURAL SCIENCES OF PHILADELPHIA. 175 



1. Neotoma magister, Baird, M. N. A. 1857, 498, in text. Loc. of remains: Caves 

 in Pennsylvania, near Harrisburg and Carlisle. 



2. Neotoma floridana, Say and Ord. 



Stn. Mux floridana, Orel, Bull. Soc. Pliilom, Phila. 1818, 181. 

 Arvicolu floriduna, Harlan, Fn. Amer. 1825, 111. 

 Neotoma floridana, Say and Ord, J. A. N. S. P. iv. 1825, 352, pi. x. 



figs. 1, 2, 3, 4. 

 Lemmus floridanus, Fischer, Syn. 1829, 299. 

 Neotoma mexicana, Bd., P. A. N. S. P. vii. 1855, 333 ; M. N. A. 1^57, 



490 ; Mex. B. Surv. ii. 1859, 44, pi. 24, f. 1 a-g. 

 Neotoma mieropuH, Bd., P. A. N, S. P. vii. 1855, 333 ; M. N. A. 1857, 



492 ; Mex. B. Surv. ii. 1859, 44. 



Hah. Southern United States, and Northern Mexico. North to 

 Maryland (y4i/,c?u6o),New York (i?e?^), and Massachusetts (G^z66s)- 

 Illinois, Arkansas, Kansas. 



3. Neotoma fuscipes, Cooper. 



Syn. Neotoma fmcipes. Cooper's MSS., Bd., M. N. A. 1857, 495. 



Hab. California. 

 [3 his. E.xtralimital : Neotoma ferruginea, Tomes.] 

 Syn. Neotoma ferruginea, Tomes, P. Z. S. 18G1, 281. 



Hah. Guatemala. Tehuantepec (Sumichrast). 

 i. Neotoma cinerea, (Ord) Baird. 



Syn. Mus cinereus, Ord, Guthrie's Geog., 2d Am. cd., ii. 1815, 292 (based 

 on ash-colored rat icitli hairy tail of the Rochy Mts., Lewis and Clarke, 

 passim). 

 Neotoma cinerea, Bd., M. N. A. 1857, 499, pi. liii. f. 4. 

 Myoxus drummondii. Rich., Zool. Jouru. iii. 1828, 517. 

 Neotoma drummondii. Rich., F. B. A. i. 1829, 137, pi. viii. 

 Neotoma occidentalis. Cooper's MSS., Bd., P. A. N. S. P. vii. 1855, 

 335 ; M. N. A. 1857, 496, pi. liii. f. 3. 



Hah. Western and Northwestern North America, to the Pacific. 

 East to Nebraska, Colorado, etc., and in British America to Hud- 

 son's Ba3\ South to New Mexico and California. 



Genus III. SIGMODON, Say and Ord. 



Syn. Sicjmodon, Say and Ord, J. A. N. S. P. iv. 1825, 352. Arvicola, 

 sp., And. and Bach., Harlan, Godman. Hespero?nys (subg. Deil- 

 emys), De Saussure, R. & M. Z. 18G0 (type toltecm). 



Ohn. Yery closely related to the average sigmodont mice. 

 Larger than usual; pelage hispid; soles naked, granular; hind 



