252 



MOSCHOPHOROMYS. 



ZYGODONTOMYS. 



breadth of incisive foramina, 27 ; breadth of braincase at squamosals, 

 16; breadth of interparietal, 10.5 ; length of lower molar series, 8. 



5O. Zygodoiitomys. 



Zygodontomys Allen, Bull. Am. Mus. Nat. Hist., ix, 1897, p. 38, 



pi. i, figs. 1-7. Type "Oryzomys cherrii" Allen. 

 Pelage soft; cusps of molars connected by median longitudinal 

 ridge. Skull similar in general characters to Oryzomys. 



FIG. 42. ZYGODONTOMYS CHERRII. 



No. 5358 Field Columbian Mus. Coll. Twice nat. size. 



UPPER TOCTH ROW. LOWER TOOTH ROW. 



Enlarged 10 times Enlarged 10 times. 



