268 Tertiary. 



nns paloregovus; and from a lacustrine, Post-pliocene deposit in Van- 

 denburg- county, Indiana, Uariacns doUchopsis. 



Messrs. Henry F. Osbofn, Wm. B. Scott, and Francis Speir, Jr.,* 

 described, from the Eocene of Wyoming and Colorado, Megeiicejjhalon 

 pt'imcevus, Leurocephalus cultridens, Hyrachyus imperialis, H. inter- 

 medius, H. crassidens, Helaletes latidens, Ithygrammodon cameloides, 

 Uintatherium leidyanum, U. princeps, Paramys superbus, Crocodilus 

 parvus, and Tricophanes copei. 



J. A. AUenf described, from the insect bearing shales of Florissant 

 Colorado, Palaospiza hella. 



Prof. Leo LesquereuxJ described, from the Pliocene Chalk bluffs of 

 Nevada county, California, Sahalites cal/fornicus, Betula aequalis, 

 Fagus pseudo-ferruginea, Quercus nevadensis, Q. distincta, Q. 

 goepperti, Q. royana, Q. pseudolyrata, Castaneopsis chrysophylloides, 

 Salix elliptica, Platanus appendiculata, P. dissecta, Liquidamhar 

 californicum^ Ulmus californica, U. pseudofulva, Ficus sordida, F. 

 tiliaefoUa, Aralia whitneyi, A. angustiloba, Cornus kelloggi. Magno- 

 lia lanceolata.^ 31. californica, Acer aequidentatum, Zizyplnis micro- 

 phyllus, Z. piperoides, Rhus mixta, R. myrciaefolia, Juglans cali- 

 fornica, J. laurinea, J. egregia ; from Table mountain, Tuoloumne 

 county, Quercus elcenoides, Q. convexa, Salix calif ornica, Ulmus 

 affinis, Ficus microphylla, Persea pseudo-carolinensis, Cornus ovalis, 

 Acer holanderi. Ilex prunifolia, Rhus typhinoides, R, bowenana, R. 

 metopioides, R. dispersa, Cercocarpus antiquus ; and from Oregon. 

 Xanthoxylon diversifolium, Juglans oregoniana.^ and Quercus bow- 

 enana. 



Prof. W. H. Dall§ described, from the Pliocene of California, Axinea 

 profunda^ Pecten expansus, P. hemphilli, P. stearnsi, Anomia limat^da, 

 and Scalaria hemphilli. 



In 1879, Dr. A. C. Peale|| found the Wasatch Group in the Green 

 river basin resting unconformably upon strata from the Silurian to 

 the Laramie; along the southwestern slopes of the Wind River moun- 

 tains, upon the granitic rocks; south of Thompson plateau upon the 

 Jurassic rocks of Meridian ridge; and north of Thompson plateau on 

 Jurassic, Cretaceous and Laramie beds. The strata along the south- 

 western slopes of the Wind river mountains were evidently derived 



* Pal. Rep. Princeton Sci. Exped. • 



t Am. Jour. Sci. and Arts, 3d ser., vol. xv. 

 J Rep. Foss. Plants Aurif Grav- Deposits. 



I Proc. U. S. Nat. Museum. 



II 11th Ann. Rep. U. S. Geo. Sur. Terr. 



