weeks.] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1896. 141 
Paleontology — Continued. 
Genera and species described — Continued. 
Platycrinus formosus, var. approximatus n. 
A-ar., Miller and Gurley, No. 509. 
hodgsoni n. sp., Miller and Gurley, No. 
508. 
illinoisensis n. sp., Miller and Gurley, No. 
508. 
subscitulua n. sp., Miller and Gurley, No. 
509. 
Pleisiochelys belviderensis n. sp., Cragin, No. 
143. 
Plesiosaurus mudgei n. sp., Cragin, No. 143. 
Pleuroccelus, Marsh, No. 480. 
Pleuromja inconstans n. sp., Aguilera, No. 10. 
Pleurotoma 
harrisi n. sp., Clark, Nos. 118, 122. 
langdoni n. sp., Aldrieh, No. 11. 
longipersa n. sp., Harris, No. 279. 
mediavia n. sp., Harris, No. 279. 
nasuta Whitf., Harris, No. 280. 
ostrarupis, Harris, Nos. 279, 280. 
persa, Harris, No. 279. 
servatoidea n. sp., Aldrieh, No. 11. 
silicata n. sp., Aldrieh, No. 11. 
vaughani, var., Harris, No. 280. 
sp., Harris, No. 279. 
(Ancistrosyriux) columbaria Aid., Har- 
ris, No. 280. 
(Cythara) galvestonensis n. sp., Harris, 
No. 278. 
( ? ) leauia n. sp., Harris, Nos. 279, 280. 
(Drillia) quadricentennialisn. sp., Harris, 
No. 278. 
quercollis, Harris, No. 279. 
(Pleurotoniella ?) anacona, Harris, No. 279. 
(Surcula) adeona, Harris, No. 279. 
Pleurotomaria 
crotaloidos Morton, Pilsbry, No. 545. 
lerchi n. sp., Vaughan, No. 698. 
ludoviciana n. sp., Vaughan, No. 698. 
nasoni, Whitfield, No. 752. 
niota, Whitfield, No. 752. 
providencis, Broadhead, No. 81. 
sancti-mauritii n. sp., Vaughan, No. 698. 
semele, Whitfield, No. 752. 
shaleri n. sp., Vaughan, No. 698. 
stantoni n. sp., Vaughan, No. 698. 
sp., Harris, No. 279. 
sp., Stanton, No. 648. 
rieurotomella whitfieldi, Harris, No. 279. 
Plicatula 
marginata, Say, No. 599. 
ostreiformis n. sp., Stanton, No. 647. 
( ? ) Harris, No. 279. 
Plumulites Barrande, Matthew, No. 490. 
manuelensis n. sp., Matthew, No. 490. 
Pinna n. sp., Stanton, No. 648. 
1'inns sp. ?, Newberry, No. 519. 
Pisania (Tritonidea) johnsoni n. sp., Aldrieh, 
No. 11. 
Pithecanthropus erectus, Marsh, No. 475. 
Pityoxylon pealei n. sp., Knowlton, No. 420. 
Podocrates vancouverensis n. sp., Whiteaves, 
No. 748. 
Paleontology — Continued. 
Genera and species deacribed — Continued. 
Podozamites 
acuminatus Hollick n. sp., Newberry, No. 
519. 
angustifolius (Eichw.) Schimp, Newberry 
No. 519. 
marginatus Heer ( ?), Newberry, No. 519. 
Podurites saltator n. sp., Matthew, No. 488. 
Fopulus 
( ? ) aificulata n. sp., Newberry, No. 519. 
balsaminoides Goeppert, Dawson, No. 176. 
rotundifolia Newberry, Dawson, No. 176. 
Posidonomya lasallensis n. sp., Miller and 
Gurley, No. 511. 
Poterioceras jerseyense n. sp., Miller and Gur- 
ley, No. 511. 
Poteriocrinus 
albersi n. sp., Miller and Gurley, No. 509. 
arrectarius n. sp., Miller and Gurley, No. 
509. 
bozemanensis n. sp., Miller and Gurley, 
No. 510. 
douglassin. sp., Miller and Gurley, No. 510. 
labyrinthicus S. A- Miller, Miller and Gur- 
ley, No. 509. 
lautus n. sp., Miller and Gurley, No. 509. 
neglectus n. sp., Miller and Gurley, No. 
509. 
pulaskiensis n. sp., Miller and Gurley, No. 
508. 
Primitia acadica, Matthew, No. 490. 
Pronoritcs Mojsisovics, Smith, No. 628. 
cyclolobus rhillips, var. arkansiensis, 
Smith, No. 628. 
prsepermicus Karpinsky, Smith, No. 628. 
sp. undet., Smith, No. 628. 
Prostostega gigas Cope, Wieband, No. 755. 
rrotapirus 
simplex W. and E., Hatcher, No. 283. 
validus n. sp., Hatcher, No. 283. 
Protaster Forbes, James, No. 360. 
( ?) granuliferus Meek, James, No. 360. 
miamiensis S. A. Miller, James, No. 360. 
Protasterina TJlrich, James, No. 360. 
fimbriata Ulrich, James, No. 360. 
flexuosa (Miller and Dyer), James, No. 
360. 
Proteoides daphnogenoides Heer, Newberry, 
No. 519. 
Protocardia 
nicolletti var., Harris, No. 279. 
virginiana Conrad, Clark, No. 118. 
virginiana ? Con., Harris, No. 280. 
Protophyllum obovatum n. sp., Newberry, No. 
519. 
Protorohippus n. gen., Wortman, No. 781. 
venticolus (Cope), Wortman, No. 781. 
Prunus (?) acutifolia n. sp., Nowberry, No. 
519. 
Pseudolivia 
ostrarupis, Harris, No. 279. 
var. pauper, Harris, No. 279. 
scalina, Harris, No. 279. 
unicarinata, Harris, No. 279. 
