weeks.] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1896. 139 
Paleontology — Continued. 
Genera and species described — Continued. 
Nassa 
galvestonensis n. sp., Harris, No. 278. 
trivigalvesta n. sp., Harris, No. 278. 
Natica 
cliftonensis n. sp., Clark, Nos. 118, 122. 
eminula, Harris, No. 279. 
limula, Harris, No. 279. 
mediavia n. sp., Harris, Nos. 279, 280. 
perspecta, Harris, No. 279. 
reversa, Harris, No. 279. 
saflbrdi n. sp., Harris, No. 279. 
(Girodes) alabamiensis, Harris, No. 279. 
(Polinioes) onusta, Harris, No. 279. 
Nautilus 
burkarti n. sp., Aguilera, No. 10. 
ponderosus, Keyes, No. 399. 
washitanus n. sp., Cragin, No. 142. 
sp., Clark, No. 118. 
Nematopbytoncrassuni, Penballow, No. 542. 
Neptunea constricta, Harris, No. 279. 
NerinajaDispar ( ?) G-abb, Whiteaves, No. 748. 
Neritoma marcouana n. sp., Cragin, No. 142. 
Neuropteris civica n. sp., Dawson, No. 176. 
Niso sp., Vaugban, No. 698. 
Nodisaurus, Marsb, No. 480. 
Nodosaria 
polygona Keuss, Bagg, No. 21. 
zippei Keuss, Bagg, No. 2) . 
Nucula 
cbickasaensis n. sp., Cragin, No. 142. 
concentrica, Say, No. 599. 
gabbi n. sp., Stanton, No. 648. 
bornbyensis nom. prov., Whiteaves, 
No. 748. 
lae vis, Say, No. 599. 
magnifica Conrad, Clark, No. 118. 
mediavia n. sp., Harris, No. 279. 
obliqua, Say, No. 599. 
ovula, Harris, No. 279. 
ricbardsoni n. sp., "Whiteaves, No. 748. 
storrsi n. sp., Stanton, No. 648. 
Odontaspis elegans (Agassiz), Clark, No. 118. 
Olcostephanus 
af. portlandicus de Loriol, Aguilera, No. 
*10. 
potosinus n. sp., Aguilera, No. 10. 
(Polyptychites) trichotoinus n. sp., Stan- 
ton, No. 648. 
(Simbirskites) mutabilis n. sp., Stanton, 
No. 648. 
Oldbamia fruticosa Hall, Whitfield, No. 752. 
Oligoporus 
coreyi, Jackson, No. 357. 
dame, Jackson, No. 357. 
missouriensis n. sp., Jackson, No. 357. 
Oliva reticularis, Harris, No. 278. 
Olivella 
galvestonensis n. sp., Harris, No. 278. 
mediavia n. sp., Harris, No. 279. 
subtcxana n. sp., Harris, No. 278. 
Oncoceras 
abruptum, Whitfield, No. 752. 
alceus, Whitfield, No. 752. 
lycus, Whitfield, No. 752. 
Paleontology— Continued. 
Genera and, species described — Continued. 
Oncoceras pandion, Whitfield, No. 752. 
plebeium, Whitfield, No. 752. 
Ophioglossum granulatum Heer, Newberry, 
No. 519. 
Opis californica n. sp., Stanton, No. 648. 
Ornitbomimus, Marsh, Nos. 480, 481. 
Ornithostoma, Williston, No. 760. 
Orthoceras 
caldwellensis n. sp., Miller and Gurley, 
No. 511. 
fauslerensis, Keyes, No. 399. 
planoconvexum, Whitfield, No. 752. 
sociale, Whitfield, No. 752. 
Osmotherium spelaeum, Cope, No. 136. 
Ostrea 
compressirostra, Say, No. 599. 
compressirostra Say, Clark, No. 118. 
convexa, Say, No. 599. 
cretacea Morton, Aldrich, No. 11. 
crenulimarginata, Harris, No. 279. 
falco, n. sp.,Dall,No. 158. 
podagrina n. sp., Dall, No. 158. 
pulaskensis, Harris, No. 279. 
sellseformis Conrad, Clark, No. 118. 
sp., Clark, No. 118. 
sp., Stanton, No. 648. 
Otocoelus testudineus Cope, Cope, No. 137. 
Otoliths, Clark, No. 118. 
Oxyrhina hastalis Agassiz, Clark, No. 118. 
. Pachydiscus haradai Jimbo, Whiteaves, 
No. 748. 
sp. ?, Whiteaves, No. 747. 
Palreanthus (Williamsonia) problematicus n. 
sp., Newberry, No. 519. 
Palreaster Hall, James, No. 360. 
antiqua (Locke), James, No. 360. 
antiqua (Troost), James, No. 360. 
clarkanus S. A. Miller, James, No. 360. 
exculptus S. A. Miller, James, No. 360. 
dubius Miller and Dyer, James, No. 360. 
dyeri Meek, James, No. 300. 
finei Ulrich, James, No. 360. 
granulosus Hall, James, No. 360. 
incomptus Meek, James, No. 360. 
jamesii Dana, James, No. 360. 
longibrachiatus S. A. Miller, James, No. 
360. 
magnificus S. A. Miller, James, No. 360. 
miamiensis S. A. Miller, James, No. 360. 
shaafteri Hall, James, No. 360. 
simplex Miller and Dyer, James, No. 360. 
speciosa (Miller and Dyer), James, No. 
300. 
spinulosus Miller and Dyer, James, No. 
360. 
Palaeechinus gigas, Jackson, No. 357. 
Palft-ocorystes harveyi n. sp., Woodward, No. 
774. 
Palasosolen occidentalis n. sp., Miller and 
Gurley, No. 511. 
Paheospondylus, Gill, No. 242. 
Palasterina (McCoy) Salter, James, No. 360. 
Paleohillia, Holm, No. 335. 
Paliurus ovalis Dn., Newberry, No. 519. 
