Mesozoic and Connozoic Geology and Palaeontology. 209 



Above the bowldei' clay, there occurs a dark gra}'', soft, sandy clay, 

 containing numerous bowlders, and above this several feet of stratified 

 sandy clay without bowlders , while on the sides of the ridges, and at 

 some places near the present shore, there are beds and terraces of sand 

 and gravel constituting old shingle beaches, apparently much more re- 

 cent than the other deposits. All of the deposits are more or less 

 fossiliferous. The surface of the rocks beneath the bowlder clay, is 

 polished and striated in the direction of northeast and southwest, or 

 that of the St. Lawrence valley. 



W, M. Gabb* described, from the Post-pliocene of San Pedro and 

 Santa Barbara, Turcica coffea, and C alUostoma tricolor. 



Dr. Joseph Leidyf described, from the Miocene of White river, 

 Nebraska, hhinoceros occidentaUs ; from Texas, R. meridianus ; from 

 Calaveras county, California, B, hesperius. And from the Pliocene of 

 California, Eqims occidentaUs. 



R. P. Whitfield;]; described, from the Eocene of the Southern States, 

 Pisania claibornens is, Pyrula Juvenis, Fulgiir triseriahs, Fusus tortilis, 

 Pseudoliva elliptica, 3Ionoptygma leai, Columbella turricula, Pleuro- 

 toma capax, P. nasutum, P. persa, P. adeona, Voluta newcombana, 

 Mitra haleana^ 31. biconica, Natica erecta, now Lacunar ia erecta, 

 N. perspecta, JS^. reversa, JV. onusta, JST. alabamensis^ now Lacunaria 

 alabamensis, JV. aperta, Velutina expansa. Gerithium vinctum., Po- 

 tamides alabamensis, Turritella eurynome^ T. multihra, T. alabamen- 

 sis, CuGulloia macrodonta, Crassatella tumidula. 



T. A. Conrad§ described, from the Jackson Group, at Enterprise, 

 Mississippi, Corbula Jilosa, Dione securiformis, D. annexa, Tellina 

 eburneopsis, T. albaria, T. linifera, Alveinus minutus, Sphoirella bulla, 

 Cyclas curia, Protocardia liTua^ Gouldia pygmasa, Axinwu in- 

 equisti'iata, A. duplistriata, IsFuculana Unifera, Nucula spheniopsis, 

 Arcoperna Jilosa, Pecten scintellatus, now Camptonectes scintellatus, 

 Doliopsis quinqnecosta, now Galeodia quinquecosta, Turritella 

 perdita, Mesalia arenicola. 



From divers places in Alabama, Mississippi and Texas, Strepsidura 

 lintea, Surcida gabbi, S. lintea, Gochlespira engonata, Moniliopsis 

 elaborata, Drillia texana, Tortoliva texana, llonoptygma curta, 

 Volutilithes indenta, V. impressa^ Obeliscus perexilis, Architectonica 



=•■• Pro. Cal. Acad. Sci. 

 ■j- Pro. Acad. Nat. Sci. 

 I Am. Jour. Conch., vol. i. 

 $ Am. Jour. Couch., vol. i. 



