weeks] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1895. 119 
Paleontology— Continued. 
Genera and species described — Continued. 
Pararuys uintensis n. sp., Osborn, 361. 
Parasaurus striatus, Marsh, 313. 
Pariotichus Cope, Cope, 93. 
aguti, Cope, 93. 
hamutus n. sp., Cope, 93. 
isolomus n. sp., Cope, 93. 
Paromylacris ampla, Scudder, 427. 
clintoniana n. sp., Scudder, 427. 
? pluteus n. sp., Scudder, 427. 
triangularis n. sp., Scudder, 427. 
Pathsenoides, Beecker, 40. 
Patrobus gelatus, Scudder, 425. 
Pecten discus Conrad, Cooper, 91. 
Pelagiella n. gen., Matthew, 319. 
atlantoides n. sp., Matthew, 319. 
Pelycorhamphuspertortus n. gen. et sp., Cope, 
92. 
Peneus, Beecher, 40. 
Pentamerus 
ohlongus, var. hisinuatus, Whiteaves, 538. 
occidentalis Hall, Whiteaves, 538. 
salinensis Swallow, Keyea, 258. 
Pentremites 
conoideus Hall, Keyes, 257. 
elongatus Shumard, Keyes, 257. 
Periploraacollardi, n. sp., Harris, 185. 
Periptychus 
brabensis Cope, Osborn and Earle, 362. 
coarctatus Cope, Osborn and Earle, 362. 
rhabdodon Cope, Osborn and Earle, 362. 
Perischodomus?? illinoisensis "Worthen and 
Miller, Keyes, 260. 
Persea dilleri, Knowlton, 273. 
Petalodus securiger, n. sp., Hay, O. P., 194. 
Petrablattina hastata, Scudder, 427. 
Phacelopora portenuis TJlrich, Keyes, 258. 
Phsenopora Hall, Ulrich, 485. 
incipiens n. sp., TJlrich, 485. 
wilmingtonensis n. sp., TJlrich, 485. 
Phanerotinus paradoxus "Winchell, Keyes, 258. 
Phialocrinus 
barydactylus n. sp., Keyes, 257. 
harii (Miller and Gurley), Keyes, 257. 
magnificus (Miller and Gurley), Keyes, 257. 
stillativus (White), Keyes, 257. 
Phillipsia 
major Shumard, Keyes, 257. 
. meramecansis Shumard, Keyes, 257. 
portlockii Meek and Worthen, Keyes, 
257. 
Pholidops Hall, Winchell and Schuchert, 562. 
trentonensis Hall var. minor n. var., Win- 
chell and Schuchert, 562. 
Phragmoceras hector Billings, Whiteaves, 538. 
Phyllites arctica n. sp., Knowlton, 270. 
Phyllodictya TJlrich, TJlrich, 485. 
frondosa? TJlrich, TJlrich, 485. 
varia n. sp., Ulrich, 485. 
Phylloporina TJlrich, TJlrich, 485. 
corticosa TJlrich, Ulrich, 485. 
halli Ulrich, Ulrich, 485. 
reticulata Hall, Ulrich, 485. 
sublaxa Ulrich, 485. 
Phyrganea ejecta Scudder, Ami, 9. 
Physa usitata n. sp., White, 535. 
Paleontology— Continued. 
Genera and species described — Continued. 
Physetocrinus 
ornatus (Hall), Keyes, 257. 
ventricosus (Hall), Keyes, 257. 
Piloceras, Hyatt, 232. 
Pinna 
alamedensis Yates, Cooper, 91. 
peracuta Shumard, Keyes, 258. 
venturensis Yates, Cooper, 91. 
Pisocrinus 
baccula n. sp., Miller and Gurley, 346. 
milligani n. sp., Miller and Gurley, 346. 
Placunopsis carbonaria Meek and Worthen, 
Keyes, 258. 
Planophlebia Scudder, Scudder, 424. 
gigantea, Scudder, 424. 
Planorbis 
pabloanus n. sp., Cooper, 91. 
prsecursoris n. sp., White, 535. 
Platanus 
appendiculata, Knowlton, 273. 
primseva? Lesq., Lesquereux, 293. 
Platycrinus 
aequalis Hall, Keyes, 257. 
allophylus (Miller), Keyes, 257. 
americanus Owen and Shumard, Keyes, 
257. 
burlingtonensis Owen and Shumard, 
Keyes, 257. 
casula n. sp., Miller and Gurley, 346. 
clinatus n. sp., Miller and Gurley, 346. 
discoideus Owen and Shumard, Keyes, 257. 
formosus n. sp., Miller and Gurley, 346. 
germanus n. sp., Miller and Gurley, 346. 
halli Shumard, Keyes, 257. 
missouriensis n. sp., Miller and Gurley, 
346. 
modestus n. sp., Miller and Gurley, 346. 
pettisensis n. sp., Miller and Gurley, 346. 
pileiformis Hall, Keyes, 257. 
pratenni Worthen, Keyes, 257. 
safibrdi Troost, Keyes, 257. 
sampsoni Miller, Keyes, 257. 
sculptus Hall, Keyes, 257. 
sulciferus n. sp., Miller and Gurley, 346. 
tigurium n. sp., Miller and Gurley, 346. 
Platynns Bonelli, Scudder, 425. 
casus, Scudder, 425. 
desuetus, Scudder, 425. 
dilapidatus, Scudder, 425. 
dissipatus, Scudder, 425. 
halli, Scudder, 425. 
harttii, Scudder, 425. 
hindei, Scudder, 425. 
Platystegos loricatum n. sp., Dawson, J. W., 
116. 
Platystrophia lynx (Eichwald), Keyes, 258. 
Plectambonites Pander, Winchell and Schuch- 
ert, 562. 
gibbosa W. and S., Winchell and Schuch- 
ert. 562. 
rhomboidalis (Wilckens), Keyes, 258. 
sericea Sowerby sp., Winchell and Schuch- 
ert, 562. 
Pleiosaurus plicatus, Marsh, 313. 
Pleurodictyum, Girty, 166. 
