XIII. -THE WRITINGS OF ROBERT P. WHITFIELD. 



Whitfield, R. P. Descriptions of New Fossils. <Rep. of a r^onnaissance of the 

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



1875. 



Page. 

 Obolm 103 



O. pecfenoides, n. s., Whitfield, 1875, pi.—, figa. 1-3 103 



Lingulcpxs pritnceformis ? pi. — , fig. 4 103 



Terebratula 103 



T.helena, n. s., Whitfield, 1875, pi.—, figs. &-10 103-104 



2. 



Whitfield, R. 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. 



Washington, 1876. 



Page. 



Orepicephalus, Owen 141 



0. (Loganellus) montanensis, n. s., Whitfield, 1876, pL i, figa. 1,2 141 



Arionellus, Barrande 141 



A. tripunctatus, n. 8., Whitfield, 1876, pL i, figs. 3-5 141-142 



Qryphoea, Lam 142 



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



Gervillia, Defrance - 142 



O. sparsalirala, n. s., Whitfield, 1876, pi. ii, fig. 8 142 



Myalina, De Koninck 143 



M.? (Germllea) perplana, n. s., Whitfield, 1876, pi. i, fig. 8 143 



Pinna, Linn 143 



P. ludlom, n. 8., Whitfield, 1876, pi. i, figs. 6, 7 143 



Tapes, Muhlf 143 



T. montanensis, n. s., Whitfield, 1876, pLii, 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) grinnelli, n . s., Whitfield, 1876, pi. il, figs. 6, 7 144-145 



Vanikoropsis, Meek 145 



Y. toumeyana, M. & H., sp., 1856, pL 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. 

 1-49. Washington, July, 1877. 



FOSBILS FBOM THK PBIMOBDIAL BOCKB. 



Page. 

 PUmtce. 



Paloeoehorda, — 7 



P.frima, n. s., Whitfield, 1877, pL i, fig. 2 , 7 



259 



