32 Cincinnati Society of Natural History. 



raclo, at the foot of Mt. Bounell. 8. The Arenaceous Group and fish 

 bed, having a thickness of 80 feet, and consisting of light yellow and 

 blue sandstone, and beds of sand3^ <^*la3', with crystals of selenite and 

 some lignite. This is supposed to be the same as B, C and D of the 

 Pyramid Mount Section of Prof. Marcou, and b}^ him referred to the 

 Jurassic period, and to be equivalent to No. 1 of the Nebraska Sec- 

 tion. 9. Marly Cla,y or Red River Group, having a thickness of 150 

 feet, and supposed to represent the lower part of the Pyramid Mt. Sec- 

 tion, which Prof. Marcou referred to the Trias. 



He described Nautilus texanus, Ammonites inaiquiplicatus, A. 

 sivallovi, A. meekanus. A. graysoiifnsis, A. hrazoensis, Scaphites ver- 

 miculus, Ancyloceras annulatum^ Baculites gracilis, Cerithium hos- 

 quense, Phasianella perovata. Avellana texana, Natica acutispira^ 

 Neritopsis bianc/itlatus, Venus sublamellosus, Cardium choctaicense, 

 now Protocardia choctawensis, C. coloradoense, C. brazoense, now 

 Protocardia brazoensis^ Cytherea lamarensis, now Dione lamarensis, 

 Tapes hilgardi^ Area proutana., Lucina sublenticidaris, Nucula hay- 

 deni, N. serrata, Corbula graysonensis, C. tuoineyi, Pachymya austin- 

 ensis, Panopcea newberryi^ P. subparallela, Inoceramus capulus, Ger- 

 villia gregaria^ Janira ivrighti, Ostrea belhplicata, O. quadriplicata, 

 Cidaris hemigranosus. 



Wm. M. Gabb* described, from Prairie Bluff, Alabama, Chemnit- 

 zia meekana^ Strajyarollus subplanus^ Sconsia alabamensis, Cancellaria 

 alabamensis, now Turbinopsis alabamensis, and Bulla macrostoma; 

 from the marl of New Jersey, ActcBonia naticoides^ now Cinulia nati- 

 coides, Phasianella punctata^ Volutilithes biplicata., now Postellites 

 bip)licatus, V. bella, now P. bellus, V. nasuta, now P. nasutus, V. con- 

 radi. now P. conradi, Fusus retifer, Papa elevata^ Morea naticella, 

 Bulla recta, 3Iysia gibbosa, Dione delaivarensis, Crassatella delawar- 

 ensis, 0. monmouthensis, Cardita subquadrata, Leda pinniformis, 

 now Nuculana innnifo^^mis^ L. protexta, now N. protexta, Cultellus 

 cretaceuSj Pecten burlingtonensis ; from Tennessee, Volutilithes 

 saffordi, and Cardium abruptum; from New Jersej', Actceonina bipli- 

 cata, now Solidula biplicata. Solarium abyssirnis^ now JIargaritella, 

 abyssinus, Volutilithes abbotti, Turbinella subconica, T. parva, Can- 

 cellaria septemlirata, Purpuroidea dubia, Pusus trivolvis, Papa 

 pyruloidea.^ Pleurotoma mullicaensis, Area quindecemradiata^ Cibota 

 muUiradiata, and Leda angulata, now Nuculana angidata, Desma- 

 tocium trilobatum^ and from Eufala, Alabama, Cassidulus micro- 

 coccus. 



[To BE Continued.] 



'•■■ Jour. Acad. Nat. Sci. 2d. Ser., vol. 4. 



