372 PROCEEDINGS OF THE NATIONAL IVfUSEUM vol.90 



360-362, 1933) ; 120 skulls, many partial skeletons, and articulated 

 limbs and feet, all representing more than 20 genera of fossil verte- 

 brates. 



A mountable skeleton of Moropus elatus from the Miocene of 

 Nebraska and a mounted skeleton of Gorgosaunis lihratus (Mat- 

 thew, W. D., Amer. Mus. Nov., No. 89, fig. 1, 1923) from the Belly 

 Eiver, Upper Cretaceous, of Canada, were received through exchange 

 with the American Museum of Natural History. Neither of these 

 genera was previously represented in the collections. A composite 

 skeleton of Eqims occidentalis from the Eancho La Brea Pleistocene 

 asphalt deposits of California was received in exchange with the Los 

 Angeles Museum of History, Science and Art ; a composite skeleton of 

 the Oligocene rhinoceros Trigonias oshorni from Weld County, Colo., 

 was received in exchange with the Colorado Museum of Natural His- 

 tory. Two duck-billed dinosaur skulls, Edmontosaums regalis (Parks, 

 W. A., Univ. Toronto Studies No. 37, p. 6, pi. 2, fig. 1, 1935) and 

 Prosaurolophus maximus^ from the Upper Cretaceous of Alberta, 

 Canada, were received in exchange with the Royal Ontario Museum 

 of Paleontology. 



Four skulls, limb, and foot bones of Lystrosaunis and Dicynodon 

 from the Triassic of South Africa were received in exchange with the 

 National Museum of South Africa. 



A beautifully preserved skull of Equus alashae from the Pleistocene 

 of Alaska was collected for the Museum by James A. Ford. An 

 articulated frog skeleton from the Miocene of Nevada was presented 

 by R. M. Catlin. The skull of a large Miocene whale from California 

 was presented by Dr. A. P. Ousdal. 



A mounted skeleton of Ichthyodectes hamatus and a skeleton of 

 Platecarpus^ both from the Niobrara, Upper Cretaceous, were 

 purchased from George F. Sternberg. 



193 i 



A skull and mandible of Equus andhim from the Pleistocene of South 

 America and a skull, lower jaw, and vertebrae of Nesodon imhricatuji 

 from the Tertiary of South America were received in exchange with 

 the Field Museum of Natural History. A skull and other bones of 

 Oxydactylus gibhi from the Miocene of Nebraska were received in 

 exchange with Amherst College. A small collection of Oligocene 

 mammals from Wyoming was presented by the University of Wyoming, 



The collection of marine mammals was enriched by the addition of 

 several cetacean skulls from the Calvert, Miocene, of Maryland, col- 

 lected by R. Kellogg, C. L. Gazin, and Raymond Gilmore. Perez 

 Simmons presented a series of teeth of Desmostyhj^ from the IVIiocene 

 of California. 



