Mesozoic and Omnozoic Geology and Palceontology. 253 



of that stream. That not a fragment of rock had been transported 

 even from so short a distance as beyond the drainage west of the 

 Sawatch, or east of the Park ranges. He placed the superficial de- 

 posits in one great period, extending from the Pliocene up to the 

 present time, because in the aggregate they afford no proof of any 

 break in the order of time. In the valley of Roaring Fork in the Elk 

 mountains, the morajnal deposits are remarkable for their thickness. 

 The surface is covered with huge bowlders, some angular, and others 

 partially rounded. The terraces are very conspicuous, rising, in some 

 instances, to 1,000 feet or more above the bed of the stream, and 

 strewed over with huge bowlders. None of the stray materials in any 

 of the valleys or gorges seem to have been transported a very great 

 distance, and never, under any circumstances, is there any drift or 

 glacial deposits from a neighboring drainage ; in other words, the 

 loose material does not pass from one independent valley to another. 

 So it is all over the Rocky mountain region. All the drift or Post- 

 pliocene deposits are local. 



Prof. E. D. Cope* described, from the Eocene of New Mexico, the 

 giant bird Diatryma gigantea; and from the Pliocene, phosphate beds 

 of South Carolina, Cyclotomodon vagrans. 



Prof. O. C. Marshf described, from the Eocene of the Rocky moun- 

 tain region, Eohippus validvs, E. pernix, Parahyus vagus, Dromo- 

 cyon vorax^ Dryptodon crassus, and Goryphodon hamatus. 



Dr. Joseph LeidyJ described, from the Eocene of New Jersey, 3fy- 

 liobates fastigiatus, and M. jugosus; from the Pliocene beds of Ash- 

 ley river. South Carolina, Belemnoziphias prorops, Choneziphius Hops, 

 C. trachops, Eboroziphius coelops, Proroziphius macrops, Myliohates 

 magister, 31. mordax, and Proroziphius chonops. 



Prof. C. A. White§ described, from the Eocene at Bijou basin, 

 40 miles east of Denver, Colorada, Corbicula powelli, Mesodesma, 

 bishopi, Phorus exoneratus ; from Crow creek, Ilelania lariuida; from 

 the West, Tulotoma thompsoni ; from the Lower Green River Group, 

 8 miles below Green River station, W3'0ming, Helix riparia ; from the 

 Upper Green River Group, at Henry's Fork and Alkali station, Unio 

 shoslionensis. Succinea papillispira, Pupa incolata, and P. arenula. 



Prof F. B. Meek|| described, from the White River Group, on 

 Pinot's creek, Limnoia shumardi. 



* Proc. Acad. Nat. Sei. 



t Am. Jour. Sci. and Arts. 3d ser., vols, xi and xii. 



I Proc. Acad. Nat. Sei. 



§ Geo. of Uinta Mountains. 



i Hayden's U. S. Geo. Sur. Terr. 



