XIII.-THE WRITINGS OF ROBERT P. WHITFIELD. 



Whitfield, R. P. Descriptions of New Fossils. <Rep. of a reconnaissance of the 



Black Hills of Dakota, by William Ludlow, pp. 103-104, pi. i. Washington, 



1875. 



Page. 



Obolus 103 



O. pecfenoides, n. 8., Whitfield, 1875, pi.— , flgs.1-3 — 103 



Iiingulepis prunceformis ? pi. — , fig. 4 103 



TerebraMa 103 



T. Helena, v. a., Whitfield, 1875, pi.-, figs. 5-10 103-104 



2. 



Whitfield, K. P. Descriptions of New Species of Fossils. < Rep. of a reconnais- 

 sance from Carroll, Montana Territory, on the Upper Missouri, to the Yellow- 

 stone National Park, and return, by William Ludlow, pp. 139-145, pis. i-ii. 



Washinstou, 1876. 



" Page. 



Orepicephalus, Owen , ~ 1^1 



O. (Loganellus) montanensis, n. s., Whitfield, 1876, pi. i, flgs.1,2 141 



Arionellus, Barrande 141 



A. tripunctatus, n. s., Whitfield, 1876, pi. i, figs. 3-5 141-142 



Qryphcea, Lam 142 



G. planoconvexa, n. s., Whitfield, 1876, pi. il, figs. 9, 10 - 142 



Qervillia, Defrance 142 



G. sparsalirata, n.s., Whitfield, 1876, pL ii, fig. 8 142 



Myalma, De Koninck 143 



M.? {Gervillea) perplana, n. a., Whitfield, 1876, pl.i.flg.S 143 



Pinna, Linn 143 



P. ludlovt, n. s., Whitfield, 1876, pi. i, figs. 6, 7 143 



Tapes, Miihlf 143 



T. montanensis, n. s., Whitfield, 1876, pi. ii, figs. 1, 2 143-144 



Mactra, Linn 144 



M. maia, n. s., Whitfield, 1876, pLii, fig. 5 144 



Sanguinolaria, Lam 144 



S. oblata, n. s., Whitfield, 1876, pi. ii, figs. 3, 4 144 



Thracia, Leach 144 



T. ( Corimya) grinnelK, n.s., Whitfield, 1876, pi. ii, figs. 6, 7 144-145 



Vanikoropsis, Meek 145 



r. toumeyana, M. & H., sp., 1856, pi. ii, figs. 11-13 145 



3. 



Whitfield, R. P. Preliminary report on the Paleontology of the Black Hills, con- 

 taining descriptions of new species of fossils from the Potsdam, Jurassic, and 

 Cretaceous formations of the Black Hills of Dakota. < U. S. Geographical and 

 Geological Survey of the Rocky Mountain region, J. W. Powell in charge, pp. 

 a-49. Washington, July, 1877. 



FOSSILS FKOM THE PKIMOBDIAL BOCKB. 



Page. 

 PUmtce. 



PalcBochorda --» "^ 



p. prima, n, #., Whifcfleld, 1877, pL i, fig. 2 7 



269 



