FIELD CoLUMBIAN MusEUM 
PUBLICATION 34. 
GEOLOGICAL SERIES. Voi. I, No. 4. 

THE MYLAGAULIDEA:: 
Pee reNCh FAMILY OF SCIUROMORPH 
RODENTS 
BY 
ELMER S. Ricoes, A.M., 
ASSISTANT CURATOR, DEPARTMENT OF GEOLOGY. 
OLIVER CuMMINGS FarrinGctTon, PH:D., 
CURATOR, DEPARTMENT OF GEOLOGY. 

Cuicaco, U. S. A. 
’ March, 1899. 
