220 BULLETIN 53, UNITED STATES NATIONAL MDSEUM. 



12299. Dentalium gracile Hall and Meek Plesiotype. 



Fort Pierre (Cret.). Cheyenne River, near Rapid Creek, 

 Black Hills, South Dakota. 



Whitfield, Rept. Geol. and Resources Black Hills Dakota, 1880, 

 p. 438, pi. 12, fig. 26. 



4270. Dentalium kornooksense Meek. Holotype. 



Nanaimo (Cret.). Nanaimo?, Vancouver Island. 



Meek, Bull. U. S. Geol. and Geogr. Surv. Terr., II, 1876, p. 364, 

 pi. 3, fig. 6. 



= Dentalium nanaiinoense. 



4270. Dentalium nanaimoensis Meek. Holotype. 



Nanaimo (Cret. J. Nanaimo, Vancouver Island. 

 Meek, Trans. Albany Inst., IV, 1S57, p. 44. 

 See Dentalium kornooksense. 



311. Dentalium pauperculum Meek and Hayden. Holotype. 



Fox Hills (Cret.). Moreau River, South Dakota." 



Meek and Hayden, Proc. Acad. Nat. Sci. Phila. , for i860, p. 178. 

 = Entalis? paupercula. 



1 12742. Dentalium prisma Dall. Holotype. 



Pliocene. Caloosahatchie River, near Fort Thompson, 

 Florida. 



Dall, Trans. Wagner Free Inst. Sei. Phila., Ill, Pt. II, 1892, 

 p. 442, pi. 15, fig. 5. 



677. Dentalium ? subquadratum Meek. Cotypes. 



Jurassic. Red Buttes, North Platte, W3 r oming. 



Meek and Hayden, Proc. Acad. Nat. Sei. Phila., i860, p. 311; Pal. 

 Upp. Mo., Smithsonian Cont. to Knowl., No. 172, XIV, 1864, 

 p. 111, text fig. — Meek, Rept. Expl. Great Basin, Utah, Simp- 

 son, 1876, p. 357, pi. 3, figs. ia-c. 



Depranella. See Drepanella. 



24358. Derbya correana Derby. Plesiotypes. 



Upper Carboniferous. Itaituba, Brazil. 



Hall and Clarke, Nat. Hist. New York, Pal. VIII, Pt. I, 1892, 

 pi. 20, figs. 10, 11. 



= Orthotetes correana. 



45561. Derbya kaskaskiensis McChesney. Plesiotype. 



Chester (Miss.). One mile west of Montgomery Switch, 

 Caldwell County, Kentucky. 



Hall and Clarke, Nat. Hist. New York, Pal. VIII, Pt. I, 1892, 

 pi. 11B, fig. 6. 



= Orthotetes kaskaskiensis. 



230S7. Desmoceras californicum Stanton. Cotypes. 



Knoxville (Lower Cret. ). Three miles north of Paskenta, 

 California. 



Stanton, Bull. No. 133, U. S. Geol. Surv., 1895 (Feb., 1S96), p. 76, 

 pi. 15, figs. 6. ;. 



