364 PROCEEDINGS OF THE NATIONAL IVIUSEUM vol.90 



therimn anzonae, and one by Gilmore, Kinostemwm arizmwnse (Gil- 

 more, C. W., Proc. U. S. Nat. Mus., vol. 62, art. 5, pp. 1-8, 1922). 

 In another paper (Gidley, J. W., U. S. Geol. Surv. Prof. Pap. 131-E, 

 1922) 15 new species of rodents were described. The collection also 

 contained the types of two new species of birds (Wetmore, Alexander, 

 Proc. U. S. Nat. Mus., vol. 64, pp. 1-18, 1924). 



A block of Dicerathermm bones in situ from the Miocene of the 

 famous Agate Springs Quarry, Nebr., was collected for the Museum 

 by James W. Gidley. A collection of about 200 specimens of Pleis- 

 tocene mammals from a cave in Coconino County, Ariz., was re- 

 ceived in exchange with the University of Arizona (Hay, O. P., 

 Proc. U. S. Nat. Mus., vol. 59, pp. 617-638, 1921). The type of 

 Bystra nanu.^ (Hay, O. P., 8th Ann, Rep. Florida Geol. Survey, p. 

 53, 1916), from the Dunnellon formation of Florida, was received 

 in exchange with the Buffalo Natural History Society. A skull 

 of Lomibeosaurus from the Belly River of Alberta; a half skull and 

 lower jaws of a Pleistocene elephant from an unknown locality; 

 and an elephant tooth from Otranto, Italy, were received in exchange 

 with Ward's Natural Science Establishment. A male and a female 

 skull of Dicer athenv.m, cooki and plaster casts of the two skulls of 

 the Permian reptiles Edaphosauriis and Diadectes were received in 

 exchange with the Walker Museum of the University of Chicago. A 

 jaw of Edestus heinrichil from the Mississippian of Illinois was 

 presented by the Southern Coal, Coke & Mining Co.; a Pleistocene 

 elephant skull from Ohio was purchased. Lower jaw of a mastodon 

 from the Pleistocene of Mississippi was purchased. 



1922 



Further collections from the Calvert (Miocene) along Chesapeake 

 Bay were made for the Museum by Norman H. Boss. Two out- 

 standing specimens are the type skull and parts of skeleton of Squal- 

 odon calvertensis (Kellogg, Remington, Proc. U. S. Nat. Mus., 62, 

 pp. 1-69, 1923) and skull and lower jaws and much of the skeleton of 

 Zarhachis -fiageUator (Kellogg, Remington, Proc. U. S. Nat. Mus., 

 63, pp. 1-39, 1924). A second collection of Miocene materials from 

 the Chesapeake Bay region, consisting of five porpoise skulls besides 

 many individual bones, was purchased from Mrs. William Palmer. 



A nearly complete hind limb of Gorgosamm^^ a tail club of an ar- 

 mored dinosaur, and the fore limbs, feet, and pectoral girdle of a 

 small trachodont dinosaur, all from the Bellj' River, Upper Creta- 

 ceous, of Alberta, Canada, were received in an exchange with the 

 Victoria Memorial Museum. A series of articulated cervical and 

 dorsal vertebrae of Edaphosaurus was received in exchange with the 

 Walker Museum. A nearly complete shell of Boremys from the 



