18 Cincinnati Society of Natural History. 



ceramus sagensis^ I. nebrascensis, and CucidUea nebrascensis, now 

 Idonearca nebrascensis. 



Dr. Joseph Leidj'* described, from the greeiisand of New Jerse}', 

 Crocodilus dekayi.-f 



Dr. Ferd. RoemerJ; described, Irom the Cretaceous rocks of Texas, 



Actreonella doliiim^ Ammonites dentato-carinatus, A.Jlaccidicosta, A. 



guadalupm^Arcopagia texana^Astarte lineolata^Astrocceniaguadalupai, 



Avicula convexo-plana, A. i^edernalis^ A. planiuscula, Caprina crassi- 



Jibra^ C. guadalupcB, Caprotina texana, Cardium elega^itidum, now Lei - 



opistha elegantida, C. sanctisabce, Chemnifzia gloriosa, Cyphosoma 



texannm, Cypricardia texana, Diadema texanum^ Eidima texana^ 



Exogyra arietina^ E. la^viuscida, E. ponderosa, E. texana, Fusus 



.jyedernalis, Globiconcha coniformis^ G. planata, Hemiaster texanus, 



Hippurites texanus, Holectypus planatus, Homomya alta, Tnoceram- 



us confer tiin-annulatus, I. nndulato-plicatus^ Lamna texana, Lima 



cremdicosta, L. wacoensis, Modiola concentrico-costellata, wowVolsella 



concentrico-costellata, M . granulato-cancellata , now Creiiella granidato- 



canceUata,3I.pedernalis,nowVolseUapedernaJis,3Io7iopleurasubtrique- 



tra, M. texana, Jfytilus semiplicatus, M. tennitesta, Natica pedernalis, 



now Lunatia pedernalis, 'J!^. prcegrandis, Nerinea acus^ iV". texana, 



Urbifulites texanus, now Tinoporus texanus, Ostrea anomiosformis, O. 



crenulimargo, 0. aucella, Pecten duplicicosta, now Neithea duplicicos- 



ta, P. texana, now JV. texana^ Pholadomya pedernalis, Psammobia 



cancellatO'Sculpta^ now Qari cancellato-sculpta, Radiolites austinensis, 



Scalaria texana, now Anchura texana, Scapkites semicostatus, S. 



fei anus, Solen irradians, Spondylus guadalupce^ Terebratida guad- 



alupce, T. ivacoensis, Toxaster texanus, Turrilites hrazoensis, and 



TurriteUa seriatim-granulata. 



In 1853, T. A. Conrad§ described, from San Felipe creek, near Rio 

 Grande, Texas, Exogyra caprina; from New Jersey, Avicula abrupta, 

 A. peirosa, Solenomya pUnudata, now I^egumen plarndatus, Crassa- 

 tella subplana. Area uniopsis, Tellina densata, Lucina pinguis, now 

 Tenea pinguis, Pecten ■ quinquenaria, now Neithea quinquenaria^ 

 Cardium protextum^ Venilia rhomboidea, now Veniella rJwmbqidea, 

 Astarte parilis, Dentalium subarcuatum, Inoceramus perovfdis, 

 Requienia senseni and Pholas pectorosa. 



* Jour. Acad. Xat. Sci., 2d ser. vol. 2 

 t Smithsonian Contributions, vol. 2. 

 X Kreid. von Texas. 

 § Jour. Acad. Nat. Sci., 2d ser. vol. 2. 



