O/rc 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 

 VOLUME 139, NUMBER 4 



A REVIEW OF THE GENUS HOPLOMYS 

 (THICK-SPINED RATS), WITH DESCRIP- 

 TION OF A NEW FORM FROM ISLA 

 ESCUDO DE VERAGUAS, PANAMA 



By 



CHARLES O. HANDLEY, JR. 



Associate Curator, Division of Mammals 



United States National Museum 



Smithsonian Institution 



(Publication 4380) 





CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



JULY 3, 1959 



