36 ANNUAL REPOKT OF THE 



suits have been prepared for publication. With our accumulating 

 stores of fossil vertebrates, and especially fishes, most of which 

 have passed through a careful sorting-out process before entering 

 the Museum, this Department promises to become in time one of 

 the foremost centres for prosecuting investigations in comparative 

 palseichthyology. 



Plans have been perfected for another collecting trip during the 

 early autumn, to include visits at Milwaukee, Burlington, and va- 

 rious well known localities in Iowa, Illinois, and Ohio. A few ex- 

 changes of material have also been arranged for. 



Additions to the Collection during the Year. 



1897. Mounted skeleton of Ursus spelceus Blumb., from Bone 

 Cavern of German}-. Purchased. Received September 10. 



1897. Calvin Collection. Second large instalment of fossil fishes 

 from the State Quarry Bed (Upper Devonian) of Johnson County, 

 Iowa, collected during the field operations for this year. Received 

 September 13. 



1898. Struthiolithus chersonensis Brandt. Fossil egg from super- 

 ficial deposits in the vicinity of Kalgan, China. Purchased January 5. 



1898. Cranium and dorso-median plate belonging to Dinichthys 

 pustulosus* Eastm., from Hamilton Limestone, Rock Island, Illinois. 

 Also a few tritors of Ptyctodus calceolus N. and W. Exchange with 

 Professor J. A. Udden, of Rock Island. Received January 11. 



1898. A small collection of Saurian and Mastodon remains obtained 

 by Dr. George J. Englemann some years ago along the Missouri 

 River. Transferred from Peabody Museum, February 1. 



1898. A select assortment of fossil fishes, principally Palaeozoic, 

 purchased of Ward's Natural Science Establishment, Rochester. Re- 

 ceived February 7. 



1898. Cast of tooth of foetal Mammoth found within the body of 

 adult at Niederweningen, near Zurich, Switzerland. Presented by 

 Dr. G. J. Pfeiffer. Received February 5. 



1898. Cast of type specimen of Struthiolithus chersonensis Brandt. 

 Presented by Professor A. Brandt, of Charkow, Russia. Received 

 March 2. 



1898. Upper dental plate selected as type of Ptyctodus ferox Eastm., 

 from Hamilton Limestone, Milwaukee, Wisconsin. Presented by Mr. 

 E. E. Teller, of Milwaukee. Received March 11. 



