NYCTOMYS. 



215 



Muzzle short; ears not hidden in fur, which is short and fine; feet 

 short, broad ; tail as long as body, hairy. Skull : rostrum very slender, 

 short braincase and zygomata expanded; orbital space broad and a 

 well-developed supraorbital crest; antorbital foramen large, opening 

 forwards ; palate only reaching to the forward margin of molar series ; 

 palatal slits short ; mammae four. 



FIG. 35. NYCTOMYS SUMICHRASTI. 



No. 12204 U. S. Nat. Mus. Coll. Twice nat. size. 



UPPER TOOTH ROW. LOWER TOOTH ROW 



Enlarged 8 times. Enlarged 8 times. 



KEY TO THE SPECIES. 



PAGE 



A. Upper parts isabella or pale orange N. sumichrasti 216 



B. Upper parts brownish isabelline N. decolorus 216 



C. Upper parts yellowish cinnamon N. nitellinus 216 



