WHITE.) CEETACEOUS. 293 



1-4. He states that his tj^pe specimens were obtained from New Jersey, 

 but so far as I am aware no other examples of the species have ever 

 been discovered. The illustrations of this species in this memoir are 

 copies of Professor Coquaud's figures iu the work cited. 



Ostrea hreiceri Gabb. 



The figure given under this name in Paleontology of California, Vol. 

 I, Plate 2G, Fig. 191, is that of an imperfect lower valve, and the brief 

 specific description on page HOI of that volume is not more satisfac- 

 tory. The figure apparently represents an oyster closely related to 0. 

 coalvillensis, and also to 0. icyomingensis Meek. 



Ostrea hryani Gabb. 



This form is briefly described without illustration in the Proceedings 

 of the Philadelphia Academy of Natural Sciences for 1876, page 321. 

 It is reported as coming from the Cretaceous of New Jersey. 



Ostrea carinata (Lamarck) Eoemer. 



(Plate XLIII, Figs. 1, 2, 3, 4.) 



This species was originally described from the European Cretaceous, 

 but Professor Koemer discovered it among his Texas collections and 

 published it in Kreidebildungen von Texas, page 75, Plate IX, Fig. 5. 

 Professor Coquand regards the Texas form as 0. peetinata Lamarck ; 

 but although it seems to vary somewhat from 0. carinata, I am dis- 

 posed to agree with Professor Eoemer in bis determination. Pig. 1 

 on Plate X is a copy of Professor Eoemer's figure, and Figs. 2, 3, 4 are 

 drawn trom a specimen sent from Texas by Mr. George StoUy, of Austin. 



Ostrea coalvillensis Meek. 



(Plate XXXVI, Figs. 1, 2, 3, 4.) 



In the reports of the United States Geological Survey of the 40th 

 Parallel, Vol. IV, page 140, Plate XV, Figs. 10, a, b, c, Mr. Meek sug- 

 gested this name for au oyster which was obtained from the marine 

 Cretaceous strata at Coalville, Utah. In aspect and details it is closely 

 like 0. wyomingensis, which, however, comes from the Laramie Group. 

 (See remarks under Ostrea wyomingensis on a following page.) 



Ostrea confragosa Conrad. 



Conrad described this species from the Cretaceous strata of Missis- 

 sippi iu the Journal of the Academy of Natural Sciences of Philadel- 

 phia, Vol. Ill (n. s.), page 329. On Plate 34, Fig. 4, of that volume he 

 gave one small figure, which does not possess sufiQcient character to 

 give any satisfactory idea of the species. 



