82 MUSEUM OF COMPARATIVE ZOOLOGY 



exhibits. Through the acquisition of several collections a large 

 amount of Devonian material from Iowa was obtained in the nine- 

 ties. Of recent years other important acquisitions have been made, 

 such as the collections of Silurian and Devonian Ostracoderms from 

 Scotland secured by H. C. Stetson or by his interest, some very fine 

 specimens for exhibition from Europe and the Cretaceous of Kansas, 

 and last of all the material secured by Mr. Schevill in Australia. 

 His Portheus on exhibition is superb. The fossil fish types in the Eser 

 collection were transferred to the Museum from the Boston Society 

 of Natural History but a few years ago. 



The collection contains upwards of 12,000 specimens, including 

 250 types. 



