128 MONOGRAPHS OF NORTH AMERICAN RODENTIA. 
Tapte XXXIV.— Measurements of twenty specimens of OCHETODON LONGICAUDA. 
Trom tip of nose to = Length of— 
ms) 3 , 
ce - | Nature of 
C Locality. Collector. 5 ES| 4 3 poaehncmn. 
3 =! Oita tees = 
2 a " 1 By ees 2 3 
E Be | ee |e eae | atl esl 
A A i) ° 4 |a i iss} 
7750 | San Francisco, Cal .......-.--. W. Stimpson.......---- 0.40 | 0.72 | 0.88 )..... 2.70 | 0.26 | 0.63 | Alcoholic. 
7751 | Fort Tejon, Cal ..| J. Xantus...-.. 0.37 | 0.65 | 0.85 | 2.30 | 2.40 | 0.25 | 0.62 |.-..do. 
9897 | Monterey, Cal........-.---.-- C.S. Canfield... 0.39 | 0.76 | 0.90 | 2.20 | 3.00 | 0.29 | 0.68 |....do. 
eee een enineaniccie see = <= ecnssce --- . . 79 I . . 6 k . saeeO; 
--- soesit hy 
Ma see des cs Go ame =| eis POE LOLS <omtninte ale atmo Peso) Barc | Sih 2. 5 5 .62 | Fresh, 
Semi bee 
.---do. 
Alcoholic, 
.---do. 
-.do. 
.-.do. 
--do. 
---do. 
---do. 
~--do. 
---do. 
---do, 
--do. 
--do. 
OCHETODON MEXICANUS, (De 8.) Coues. 
Reithrodon mexicanus, Dy Saussure, Rev. & Mag. Zool. 1860, p. — (p. 27 of the separate reprint).—TomrEs, 
Proce. Zool. Soc. 1861, 284 (Guatemala). 
Ochetodon mexicanus, COUES, Proc. Acad. Nat. Sci. Phila. 1874, 186. 
Draenosis.—O. maximus, caudéd trunco longiore, pedibus validissimis , 
murino-brunneus, subtus ex brunneo albidus, lateribus subflavicantibus. Long 
tot. 24-3, caudea 3-33, pedis 0.70-0.80. 
Hasirat.—Mexico (De Saussure, Sumichrast). Guatemala (Tomes). 
Louisiana (Saint Charles College). 
Larger than either of the foregoing ; upward of 3 inches long, with the 
tail averaging 34, thus much exceeding the head and body, as in O. dongi- 
cauda, but feet much larger than in that species, 0.70 to 0.80 (whereas the 
feet of dongicauda are barely larger than those of humilis, very seldom touch- 
ing 0.70). Upper parts a rather warm mouse-brown (rufous or dull ferrugine- 
ous, not mouse-gray), which on the sides usually grows brighter, aud is 
sometimes almost orange-brown; this, again, fading on the under parts into 
a muddy-whitish (not white at all). Tail extremely scant-haired, nearly as 
naked as in Mus musculus, in dried specimens appearing nearly unicolor ; 
in alcoholic ones, dull pale brown above and whitish underneath. Hands and 
feet whitish above (like the fail underneath). 
