290 



MERRIAM 



ORYZOMYS CHAPMANI SATURATIOR subsp. nov. 



Type from Tumbala, Chiapas. No. 76183 9 ad. U. S. National 

 Museum, Biological Survey Coll. October 23, 1895. E. W. Nelson 

 and E. A. Goldman. Original number 8574 



Characters. — Similar to chapmani but decidedly darker, particu- 

 larly on top of head and middle of back, which are blackish, slightly 

 ' peppered ' with fine points of fulvous ; underparts soiled buffy, in 

 some specimens salmon ; cheeks fulvous ; ears, hind feet, and tail 

 blackish. 



Measurements. — Type specimen (9 ad.): total length 218 mm.; 

 tail vertebrae 120; hind foot 25.5. 



ORYZOMYS CHAPMANI DILUTIOR subsp. nov. 



Typeixova. Huauchinango, Puebla, Mexico. No. 93124 $ ad. U. 

 S. National Museum, Biological Survey Coll. January 10, 1898. E. 

 W. Nelson and E. A. Goldman. Original number 12040. 



Characters. — Similar to chap7nani but slightly paler ; hind foot 

 longer ; rostrum and nasals broader ; I'ostrum more swollen at base ; 

 anterior root of zygoma heavier. 



Measurements. — Type specimen (^ ad.): total length 223 mm.; 

 tail vertebrae 117; hind foot 28. 



ORYZOMYS PALATINUS sp. nov. 



Type from Teapa, Tabasco, Mexico. No. 99977 $ ad. U. S. Na- 

 tional Museum, Biological Survey Coll. April i, 1900. E. W. Nel- 

 son and E. A. Goldman. Original number 14080. 



Characters. — Size small ; color dark with intense red-fulvous suf- 

 fusion. Similar to chap7nani but back redder ; cranial characters dis- 

 tinctive. 



Color. — General effect of upperparts nearly burnt umber, from fine 

 admixture of intense rufous and black hairs ; sides, to and including 

 cheeks, pale fulvous; underparts whitish, the slaty underfur showing 

 through; hind feet whitish; ears and tail dark, the tail paler under- 

 neath basally. 



Cranial characters. — Skull small, light, and slender, with only 

 faintest trace of supraorbital bead ; zygomata narrow, their outer sides 

 parallel ; incisive foramina short, broadly spreading posteriorly and 

 separated by a very broad septum. 



Remarks. — Compared with chap7na7ii., its only known near relative, 

 the general color is redder ; the cheeks decidedly more fulvous ; the 



