480 



Page. 



Protostega - - 28 



gigas 28 



Pterodactylus 26 



umbrosus 26 



ingeus - 26 



occidentalis 26 



velox 26 



Pterosauria - 26 



Ptychodus , 48 



polygyrus 48 



occidentalis 48 



mortonii » 48 



whippleyi .48 



Pythonomorpha 30 



Pyrgomorpha brevicornis 64 



Range, Elk Mountain 75 



Front - 73,74 



Sangre de Cristo 73,74 



Sawatch 73,74 



Snow-mass 75 



Park 74 



Eeptllia 17 



Eeview of the Vertebrata of the Cretaceous period found west of the Mississippi 



River, by E. D. Cope, A. M 5 



Rhineastes 49 



pectinatus -- 49 



measurements of 49 



Rock Springs 9 



Salt Cells. ^ ^-- » 



Sangre de Cristo range 73,74,75 



elevations in 76 



San Luis Valley, elevations in 77 



Sauroceiihalus 41 



lanciformis 41 



arapahovius - 41 



Sauropterygia 27 



Saururco 17 



Sawatch range 73,74,75 



elevations in 77 



Section of Bitter Creek series near Black Butte station 10 



Selachii 47 



Sirouectcs 34 



anguliferus 34 



measurements of 34 



Snow-mass range J^ 



elevations in 76 



South Park, elevations in 77 



Sporetodus ^'^ 



janevaii 47 



Stratodus 47 



apicalis 47 



Supplementary notices of iishcs from the fresh- water Tertiaries of the Rocky 



Mountains, by Cope 49 



? Syneutognathi • - - - 39 



Tetheodus 43 



pephredo 43 



measurements of 44 



Thomas Cyrus, descriptions of some new Orthoptera, aud notes on some species 



but little known 63 



Thrincus californicus 66- 



Toxochelys *° 



latiremis - ^° 



Trionyx ■ |9 



foveatus ~^ 



vagans ---- '^^ 



Troodon f^ 



Vegetable remains of the Dakota group 54 



Vertebrate species of the Fort Union group in Colorado 7 



Dakota 7 



