44 LIST OF OSTEOLOGICAL SPECIMENS. 



Ctenomys, Blanv. 



The Comb-clawed Lemming. Ctenomys Braziliensis. 

 Skull. Bolivia. From Mr. Bridge's collection. 

 Skull. Bolivia. From Mr. Bridge's collection. 

 Skull. Chili. From Mr. Bridge's collection. 



Castor, Linn, 

 The Beaver. Castor fiber. 

 Lower-jaw, right side. Europe. 



Myopotamus, Comm. 



The Coypu. Myopotamus Coypus. 

 Skull, adult. North America ? 



* Skull, half-grown. North America ? 



Fiber, Cuv. 



The Ondatra. Fiber zibethicus. 



* Skull, imperfect. North America. 



Hydromys, Geoff. 



The Hydromys. Hydromys chrysogaster. 

 Skull. Australia. 



Schizodon, Waterh. 



The Brown Schizodon. Schizodon fuscus. 



* Skull. Chili. From Mr. Bridge's collection. 



* Skull, imperfect. Chili. From Mr. Bridge's collection. 



Abrocoma, Waterh. 



Bennett's Abrocoma. Abrocoma Bennettii. 



* Skull. Chili. From Mr. Bridge's collection. 



* Skull. Chili. From Mr. Bridge's collection. 



PSAMMORYCTES, Poep. 



The Black-sand Rat. Psammoryctes ater. 

 Skull. Chili. From Mr. Bridge's collection. 



Octodon, Bennett. 



Bridge's Octodon. Octodon Bridgesii. 



* Skull. Chili. From Mr. Bridge's collection. 



* Skull. Chili. From Mr. Bridge's collection. 



* Skull. Chili. From Mr, Bridge's collection. 



The Cucurrito or the Degtjs. Octodon Degus. 

 Skeleton. Chili. From Mr. Bridge's collection. 



