WEEKS.] 
PALEONTOLOGY, PETROLOGY, AND 
MINERALOGY, 1898. 151 
Paleontology — Continued. 
Genera and species described — Continued. 
Pecten (Patinopecten) eugrammatus n. sp., 
Dall, No. 184. 
expansus Dall, Dall, No. 184. 
hemicyclicus Racenel, Dall, No. 184. 
hemphillii Dall, Dall, No. 184. 
humphreysii Conrad, Dall, No. 184. 
poulsoni Morton, Dall, No. 184. 
propatulus Conrad, Dall, No. 184. 
ravemeli n. sp., Dall, No. 184. 
Boror Gabb, Dall, No. 184. 
stearnsii, Dall, No. 184. 
(Placopecten) Verrill, Dall, No. 184. 
clintonius Say, Dall, No. 184. 
marylandicus "Wagner, Dall, No. 184. 
(Plagioctenium) excentricus Gabb, Dall, 
No. 184. 
gabbi Dall, Dall, No. 184. 
demiurgus n. sp., Dall, No. 184. 
deserti Conrad, Dall, No. 184. 
gibbus Linne, Dall, No. 184. 
var. amplicostatus Dall, Dall, No. 
184. 
var. borealis,Dall, No. 184. 
var. dislocatus Say, Dall, No. 184. 
var. irradians Lamarck, Dall, No. 
184. 
var. nucleus Born, Dall, No. 184. 
magellanicus Emelin, Dall, No. 184. 
oboreus Conrad, Dall, No. 184. 
var. comparilis Tuomey and 
Holmes, Dall, No. 184. 
var. darlingtonensis Dall, No. 184. 
var. eboreus Conrad, Dall, No. 184. 
var. senescens Dall, Dall, No. 184. 
var. solarioides Heilprin, Dall, 
No. 184. 
var. yorkensis Conrad, Dall, No. 
184. 
pabloensis Conrad, Dall, No. 184. 
subventricosus n. sp., Dall, No. 184. 
virginianus Conrad, Dall, No. 184. 
(Propeamusium) alabamensis Aldricb, 
Dall, No. 185. 
alaskensis Dall, Dall, No. 184. 
(Paeudamusium) H. and A. Adams, Dall, 
No. 184. 
calvatus Morton, Dall, No. 184. 
cerinus Conrad, Dall, No, 184. 
frontalis Dall, No. 184. 
guppyi n. sp., Dall, No. 184. 
scintillatus Conrad, Dall, No. 184. 
Pectunculus idoneus, Harris, No. 334. 
virginiae "Wagner, Dall, No. 185. 
Pelion, Case, No. 134. 
Pentamerus oblongus Sowerby, var. maquo- 
keta, Hall and Clarke, No. 327. 
var. subrectus, Hall and Clarke, No. 327. 
Pentremiridea filosa "Whiteaves (?),"Weller, 
No. 862. 
milwaukensis n. sp., "Weller, No. 862. 
Pephricaris horripilata n. sp., Clarke, No. 156. 
Periploma butleriana, Harris, No. 334. 
Petalotrypa, Simpson, No. 702. 
Petigopora, Simpson, No. 702. 
Paleontology — Continued. 
Genera and species described — Continued. 
Pbacelopora, Simpson, No. 702. 
Phamopora, Simpson, No. 702. 
Pbaneropleuron, Case, No. 133. 
Phenacodus primsevus Cope, Osborn, Nos. 588, 
592. 
Phlyctalnacantbus, telleri, n. sp., Eastman, 
No. 246. 
Pholadidea Goodall, Dall, No. 184. 
Pbolas alatoidea, Harris, No. 334. 
producta Conrad, Dall, No. 184. 
(Linne) Lamarck, Dall, No. 184. 
(Thovana) campecbiensis Gmelin, Dall, 
No. 184. 
memmingeri, Tuomey and Holmes, 
Dall, No. 184. 
Pbolidops calceola, Hall and Clarke, No. 327. 
patina, Hall and Clarke, No. 327. 
Pbospborosaurus, "Williston, No. 902. 
Phractopora, Simpson, No. 702. 
Phragmites sp. ( ?), Newberry, No. 573a. 
Phyllites carneosus Newb., Newberry, No. 
573a. 
cupanioides Newb., Newberry, No. 573a. 
obcordatus Heer, Newberry, No. 573a. 
vanonse Heer, Newberry, No. 573a. 
venosus Newb., Newberry, No. 573a. 
Pbylloceras Suess, Smitb, No. 713. 
onoense Stanton, Smitb, No. 713. 
Phyllodictya, Simpson, No. 702. 
Pbyllopora, Simpson, No. 702. 
Pileotrypa, Simpson, No. 702. 
Pinacotrypa, Simpson, No. 702. 
Pinna arkansana n. sp., Weller, No. 860. 
caloosaensis n. sp., Dall, No. 184. 
carnea Gmelin, Dall, No. 184. 
quadrata n. sp., Dall, No. 184. 
rudis (Linn6) Dillwyn, Dall, No. 184. 
sp., Harris, No. 334. 
Pinnaporina, Simpson, No. 702. 
Pinus bambachi n. sp., Kircbner, No. 442. 
Pistacia aquebongensis n. sp., Hollick, No. 
368. 
Pityoxylon hollicki n. sp., Knowlton, No. 452. 
n. sp., Hollick, No. 370. 
Placenticeras placenta Dekay, Logan, No. 498. 
Placodus, Case, No. 135. 
Placunanomia litbobleta n. sp., Dall, No. 184. 
plicata Tuomey and Holmes, Dall, No. 184. 
Planera crenata Newb., Newberry, No. 573a. 
longifolia Lesq., Newberry, No. 573a. 
mycrophylla Newb., Newberry, No. 573a. 
nervosa Newb., Newberry, No. 573a. 
variabilis Newb., Newberry, No. 573a. 
Platanus aspera Newb., Newberry, No. 573a. 
haydenii Newb., Newberry, No. 573a. 
latiloba Newb., Newberry, No. 573a. 
nobilis Newb., Newberry, No. 573a. 
raynoldsii Newb., Newberry, No. 573a. 
Platecarpus, Williston, Nos. 902, 906. 
clidastoides, "Williston, No. 902. 
coryphaeus, "Williston, No. 902. 
crassartus, "Williston, No. 902. 
felix, Williston, No. 902. 
glandiferua, Williston, No. 902. 
