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R. W. SHUFELDT. 



Order 



Suborder XV. 

 Siiperfamily IX. 

 Family XXXVI. 



- XXXVII. 



- XXXVIII. 



- XXXIX. 

 Siiperfamily X. 

 Family XL. 



- XLI. 



- XLII. 



- XLIII. 

 ~ XLIV. 

 _ XLV. 



Siiperfamily XI. 

 Family XLVI. 



- XLVII. 



- XLVIII. 



- XLIX. 



- L. 



- LI. 

 Suborder XVI. 

 Superfamily XII. 

 Family LII. 



- LIII. 



VIII. Rodentia. (Rodents.) 



Simplicidentata. (Simplicident Rodents.) 

 Sciuroidea. (Sciurine Rodents.) 

 Änomahiridae. (Scaled-tailed Squirrel.) 

 Sciuridae. (Fox Squirrel.) 

 Haplodontidae. (Sewellel.) 

 Castoridae. (Beaver.) 

 Myoidea. (Murine Rodents.) 

 Myoxidae. (Dormouse.) 

 Lophiomyidae. (Lophiomys inhausi.) 

 Muridae. (Deer Mouse.) 

 Spalacidae. (Great Rodent Mole.) 

 Geomyidae. (Poucbed Rat.) 

 Blpodidae. (Jumping Mouse.) 

 Hystricoidea. (Hystricine Rodents.) 

 Ododonidae. (Ground Rat.) 

 Hystricidae. (Porcupine.) 

 Chiiichillidae. (Cbinchilla). 

 Dasyprodidae. (Agouti.) 

 Dinomyidae. (Dinomys brawsticki.) 

 Gaviidae. (Capybara.) 

 Duplicidentata. (Duplicident Rodents.) 

 Lagomophoidea. (Pikas, Hares.) 

 Lagomyidae. (Pika.) 

 Leporidae. (Rabbit.) 



Order IX. Ungulata. (Ungulates.) 

 Supersuborder I. Subungulata. (Polydactyl Ungulates.) 



Hyracidea. (Conies). 

 Hyracidae. (Daman.) 

 Prohoscidea. (Proboscideans.) 

 Elephantidae. (Indian Elephant.) 

 Unguligrada. (True Ungulates.) 

 Perissodadyla. (Odd-toed Ungulates.) 



Suborder 



XVIL 



Family 



LIV. 



Suborder 



XVIII. 



Family 



LV. 



Supersubc 



)rder IL 



Suborder 



XIX. 



