LIST OF SPECIES DESCEIBED. 



467 



CEETACEOUS— Continued. 



Systematic name. 



Lamellibranchiata — Continued. 

 Inoceraruus altus Meek 



perplexus, n. sp 



sublaevis H. & M 



sagensis Owen 



simpsoni Meek 



vanaxemi M. & H 



vanuxemi, var 



barabini Morton 



tenuilineatus M. & H 



Endocostea typica, n. sp 



sulcata Eoemer 



Idonearca shumardi M. & H 



Nucula planimarginata M. & H 



Nuculana bisulcata M. & H 



subequilatera, n. sp 



Yoldia evansi M. & H 



Lucina occidentalis Morton 



ventricosa H. & M 



(Diplodonta) subundata, H. & M. .. 



Crassatella subquadrata, n. sp 



Astarte evansi H. & M 



Veniella humilis M. & H 



Sphoeriola transversa, n. sp 



Dosinia missouriana Morton ? 



Thetis circularisM. &H 



Leiopistha ( Cymella) meeki, n. sp 



Thracia subgracilis, n. sp 



Nea?ra moreauensis M. & H 



GASTEROPODA. 



Fasciolaria(Cryptorhytls)fusiformis H. &M. 



contorta M 



(Piestocheilus) culbertsoni M.&H 



Fusus shumardi H. & M 



cheyennensis, n. sp 



Aporrhais newberryi Meek 



meeki, n. sp 



(Goniocheilus) castorensis, n. sp.. 

 Anchura ? sublaevis M. & H 



Division. 



No. 



2 

 4 

 4 

 4 

 4 

 4 



4 



4 



4 and 5 



4 and 5 



5 



4 



4 and 5 



4 



4 or 5 



4 and 5 



4 



4 



4 ? 



4 



5 



5 



4 



4 



5 



4 



4 



or 5 



Locality. 



Belle Fourcbe River, ten miles west 



of Crow Creek. 



do 



Forks of the Cheyenne River 



Sage Creek and Old Woman Fork 



Old Woman Fork 



Old Woman Fork, &c 



Belle Fourche River, ten miles west of 



Crow Creek. 

 Cheyenne River, near Box Elder Creek . 



(October 2) 



Old Woman Fork 



Loose on Beaver Creek 



Cheyenne River, near Old Woman Fork 



Cheyenne River 



Cheyenne River, near Box Elder Creek . 

 Cheyenne River, near French Creek.. 



Old Woman Fork, &c 



Cheyenne River, near Rapid Creek . . . 



do 



do 



Cheyenne River 



Cheyenne River, near Rapid Creek . . . 

 Cheyenne River, near Old Woman Fork 



do 



Cheyenne River 



Cheyenne River, near Rapid Creek . 

 Dead Man's Rapids, Upper Missouri 

 Cheyenne River, near Rapid Creek . 

 Forks of the Cheyenne River 



Cheyenne River, near Rapid Creek . 



Old Woman Fork 



Near French Creek 



East fork of Beaver Creek 



Cheyenne River, near Rapid Creek . 



Rio de la Plata 



Cheyenne River, near Rapid Creek - 



East fork of Beaver Creek 



Near Box Elder Creek 



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