254 INDEX TO NORTH AMERICAN GEOLOGY, PALEONTOLOGY, [bull. 189. 
Paleontology-Continued. 
G( nera and species described — Continued. 
Parasimilia ludoviciana n. sp., Vaughan, 5735. 
Parastrophia Hall, Hall and Clarke, 2261a, 
2264. 
divergent n. sp., Hall and Clarke, 2261a, 
2263, 2268. 
greenii n. sp., Hall and Clarke, 2261a, 
2263, 2268. 
Iatiplicata n. sp., Hall and Clarke, 2261a, 
2263, 2268. 
multiplieata n. sp., Hall and Clarke, 2261a, 
2263, 2268. 
Parasaurus striatus, Marsh, 3695. 
Parazyga n. gen., Hall and Clarke, 2261, 2264. 
Parazyga Hall and Clarke, Grabau, 2086. 
hirsuta Hall, Grabau, 2086. 
Pareiasaurus, Case, 768. 
Parenchyniophycus n. gen., Duden, 1554. 
asphalticum n. sp., Duden, 1554. 
Pariotichus Cope, Cope, 1097. 
aguti, Cope, 1097. 
hamatusn. sp., Cope, 1097. 
isolomus n. sp., Cope, 1097. 
Parisocrinus subramosus, Springer, 5163. 
Parka decipiens, Dawson and Penhallow, 
1438. 
Parmophorella acadia (Hartt), Grabau, 2092. 
(?) paupera, Bill., sp., Matthew, 3790. 
Parolamia rudis, Scudder, 4900. 
Paromylacris ampla, Scudder, 4898. 
clintoniana n. sp., Scudder, 4898. 
? pluteus n. sp., Scudder, 4898. 
triangularis n. sp., Scudder, 4898. 
Paropsonema cryptophya, Clarke, 973. 
Parrotia canfieldi n. sp., Lesquereux, 3470. 
grandidentata n. sp., Lesquereux, 3470. 
winchelli n. sp., Lesquereux, 3470. 
Pasceohis darwinii, James, 2881. 
globosus, James, 2881. 
gregarius? Billings, Whiteaves, 6087. 
(?) tumidus, James, 2881. 
Passifiora antiqua n. sp., Newberry, 4080. 
Patella geometrica n. sp., Merriam, 3919, 3923. 
Patellina texana (Roemer), Hill, 2539. 
Patellostium, Girty, 2037. 
Patellostium Waagen, Ulrich and Scofleld, 
5541. 
nodocostatum (Gurley), Girty, 2037. 
scriptiferus (White), Weller, 6006. 
Paterula Barrande, Hall and Clarke, 2260. 
amii n. sp., Schuchert; 4849. 
Pathsenoides, Beecher, 366. 
Patriofelis, Wortman, 6484. 
ferox, Osborn, 4222. 
? leidyanus n. sp., Osborn and Wortman, 
4180. 
ulta Leidy, Osborn, 4193a. 
Patrobus gelatus, Scudder, 4896. 
Pattersonia, James, 2881. 
aurita (Beecher)?, Rauff, 4548. 
difficilis, James, 2881. 
difficilis S. A. Miller, Rauff, 4548. 
tuberosa, James, 2881. 
tuberosa (Beecher), Rauff, 4548. 
ulrichi n. sp., Rauff, 4548. 
Pauliella Munier Chalmas, Dall, 1281. 
Paleontology— Continued. 
Genera and species described— Continued. 
Pchyornis, Case, 769. 
Pecopteris cf . arborescens (Schloth.) Brongn., 
White, 6050. 
borealis Brongn., Fontaine, 1850. 
browniana, Dawson, 1434. 
clintoni Lx., White, 6050. 
dentata Brongn. (non Will.), White, 6040, 
6049. 
geyleriana Nathorst, Fontaine, 1850. 
jenneyi n. sp., White, 6050. 
lesquereuxii D. W., White, 6049. 
oreopteridia (Schloth.) Stb., White, 6049. 
polymorpha Brongn., White, 6049. 
pseud ovestita n. sp., White, 6050. 
richardsoni n. sp., White, 6049. 
serrulata Hartt, White, 6052. 
squamosa Lx., White, 6050. 
unita Brongn., White, 6049. 
vestita Lx., White, 6050. 
var. minor n. var., White, 6049. 
(Astefotheca) hemitelioides Brongn.?, 
White, 6050. 
(Asterotheca) lesquereuxii n. sp., White, 
6040. 
(Asterotheca) squamosa Lx., White, 6018. 
(Cheilanthes) sepulta Newb., Newberry, 
4083. 
(Dactylotheca) dentata Brongn. (non 
Will.), White, 6050. 
(Ptychocarpus) unita Brongn.?, White, 
6040. 
Pecten Miiller, Dall, 1222. 
alabamensis, Harris, 2310. 
californicus Gabb?, Stanton, 5199. 
centrotus (perplanus var.?), Dall, 1272. 
choctavensis n. sp., Aldrich, 73. 
clarkeanus n. sp., Aldrich, 73. 
clintonius, Say, 4813. 
complexicosta Gabb, Stanton, 5199. 
cretaceus n. sp., Dall, 1272. 
discus Conrad, Cooper, 1471. 
hericeus var. hindsii Carpenter, Dall, 1272. 
var. strategus Dall, Dall, 1272. 
inconspicuus n. sp., Cragin, 1118. 
jeffersonius, Say, 4813. 
jeffersonius var. septenarius Say, Dall, 
1272. 
johnsoni n. sp., Clark, 904, 906. 
madisonius, Say, 4813. 
madisoniusvar. sayanusn.var., Dall, 1272. 
madisonius, Whitfield, 6101. 
rogersi n. sp., Clark, 904, 906. 
septenarius, Say, 4813. 
stantoni n. sp., Hill, 2539. 
vicenarius (?), Whitfield, 6101. 
(iEquipecten?) chipolanus n. sp., Dall 
1272. 
choctavensis Aldrich, Dall, 1272. 
glyptus Verrill, Dall, 1272. 
inaequalis Sowerby, Dall, 1272. 
oxygonum Sowerby, Dall, 1272. 
perplanus Morton, Dall, 1272. 
scissuratus n. sp., Dall, 1272. 
suwaneensis n. sp., Dall, 1272. 
tbetidis Sowerby, Dall, 1272. 
. 
