NATURAL SCIENCES OF PHILADELPHIA. 285 



J. Kochersperger ; and specimens of the seventeen year Locust, 

 by S. L. McAllister. 



Fossils. A large collection of remains of mammals and reptiles, 

 from the Bridger Tertiary formation of Wyoming Territory, has 

 been presented by Dr. J. Van A. Carter and Dr. Joseph K. Corson, 

 U.S.A. Among these are the t}^pes of the species described or 

 noticed by the writer in the present volume of the Proceedings. 

 The fine specimen of a Turtle, from the same locality, described 

 under the name of Baptemys wyomingensis, has likewise been 

 obtained for the Academy through exchange. A nearly complete 

 plastron of the Testudo Corsoni from the same locality was pre- 

 sented hy Mrs. Dr. J. Van A. Carter. A fine dorsal shield of 

 Trionyx uintaensis, was likewise presented by Major Robert S. 

 La Motte, commander at Fort Bridger. Another rich collection 

 of fossils, presented to the Academy during this year, consists of 

 350 species of mollusks, from Santa Domingo, received from our 

 generous fellow-member and able geologist, William M. Gabb, on 

 condition that he shall have the privilege of withdrawing the 

 specimens for study if neeessaiy. Mr. Gabb has also presented 

 seven species of fossil shark teeth from St. Domingo; a mass of 

 stalagmite with shells, from the cave of San Lorenzo, St. Domingo ; 

 and several fossil foot-prints in redshale, from the valley of the 

 Little Schuylkill River. 



The following collections were also presented : Twenty-two 

 species of fossil mollusks, corals, and crinoids, from the carboni- 

 ferous limestone of England, a vertebra of Ichthyosaurus, and six 

 do. of Plesioasaurus, from the Lias of England, by Clarence S. 

 Bement. Dicotyledinous leaves in red sandstone from the creta- 

 ceous formation near Fort Darker, Kansas, from Dr. B. E. Fryer, 

 U.S.A. 



Fresh-water shells, from Crow Creek, Wyoming, from E. L. 

 Berthoud. Jaw fragment of Eschrichtius Davidsonii, Cope, from 

 San Diego, Cal., from George Davidson. 



Two vertebrae of Macrosaurus, a tooth and three coossified ver- 

 tebra? of Mosasaurus, and a fragment of a large limb bone, from 

 the marl of Woodstown, N. J., from S. Shortledge, of Kennett 

 Square, Chester Count}", Penn. Two species of fossil fishes, from 

 Verona, Daly, from Mr. Harrison. 



In addition, Dr. Thomas X. Penrose, U.S.IS 1 "., presented a large 

 slab of stone with a section of an Orthoceratite mounted as a 



