370 PROCEEDINGS OF THE NATIONAL MUSEUM vol.90 



of them representing new species (Gilmore, C. W.. Proc. U. S. Nat. 

 Mus., vol., 83, pp. 159-188 pis. 13-18, 1935). 



A group of eight articulated skeletons of Mesohipfns bairdi from 

 the Oligocene of western Nebraska and a skeleton of a small mar- 

 supial (Peratherium) from the Florissant of Colorado (Gazin, C. L., 

 Journ. Pal., vol. 9, pp. 57-62, 1935) were purchased from George F. 

 Sternberg. 



A collection of zeuglodont remains from the Jackson, Eocene, of 

 Alabama, was made by Kemington Kellogg and Norman H. Boss under 

 the auspices of the Carnegie Institution. It included a beautifully 

 preserved skull and lower jaws with much of the skeleton of a small 

 zeuglodont Zygorhiza kochii (Kellogg, R., Carnegie Inst. Washington 

 Publ. 482, pp. 101-176, 1936). The cetacean collection was further 

 enriched by a nearly complete skull and lower jaws with much of the 

 skeleton of a large whalebone whale collected fi'om the Calvert, 

 Miocene, near Governors Run, Md. ; this specimen was discovered and 

 presented by the Maryland Geological Survey. A partial skull of 

 Schizodelphis^ also from the Calvert of Maryland, was presented by 

 William Jones. 



Two fossil amphibian skeletons on slabs, Pelonauru.^ and BrancMo- 

 sawnis from the Permian of Germany, were purchased. A complete 

 shell of Amy da viigmmna (Lynn, W. Gardner, Proc. U. S. Nat. 

 Mus., vol. 76, art. 26, pp. 1-4, 1929) from the Cretaceous of Virginia, 

 was deposited by the Geological Survey of Maryland. 



1931 



The most important accession of the year was a collection of 350 

 specimens made by a party from the Museum under the direction of 

 Charles W. Gilmore from the Bridger, Eocene, of Wyoming. Out- 

 standing specimens in the collection were : A nearly complete articu- 

 lated skeleton of Hyrachyus eximiu^s and a skeleton of Helaleten 

 nanus (both now mounted and on exhibition), two partial skeletons 

 of Pala£osyops^ a skeleton of Crocodylus^ and 38 well-preserved turtle 

 specimens representing no less than eight genera. 



A second collection of the Pliocene horse Plesippus shoshanensis, 

 from near Hagerman, Idaho, was made by a party working under 

 the direction of J, W. Gidley. Many skulls and parts of skeletons, 

 all in excellent preservation, were secured. Accessory material was 

 later added to the collection by the work of Elmer Cook, who carried 

 on independent collecting in these same deposits for the Museum. 



The type skull of Ti'oodon wyomingensis (Gilmore. C. W., Proc. 

 U. S. Nat. Mus., vol. 79, art 9, pp. 1-6, 1931) from tlie Lance, Upper 

 Cretaceous, of Wyoming, and well-preserved skulls of Ichthyodectes 

 and Protosphyraena from the Niobrara chalk of Kansas, where pur- 



