252 MOSCHOPHOROMYS. ZYGODONTOMYS. 
breadth of incisive foramina, 27: breadth of braincase at sc uamosals, 
7 | 
16; breadth of interparietal, 10.5; length of lower molar series, 8. 
50. Zygodontomys. 
l=: M3 = 16. 
“I—I gS 
Zygodontomys Allen, Bull. Am. Mus. Nat. Hist., rx, E807, “p's 
pl. 1, figs. 1-7. Type ‘‘Oryzomys cherrii’”’ Allen. 
(oe) 
Pelage soft; cusps of molars connected by median longitudinal 
ridge. Skull similar in general characters to Oryzomys. 
FIG. 42. ZYGODONTOMYS CHERRII. 
No, §358 Field Columbian Mus. Coll. Twice nat. size. 
UPPER TOOTH ROW LOWER TOOTH ROW 
Enlarged 10 times Enlarged to times, 
