270 INDEX TO NORTH AMERICAN GEOLOGY, PALEONTOLOGY, [bull. 189. 
Paleontology— Continued. 
Genera and species described — Continued. 
Pterophyllum rajmahalense Morris, Ward, 
Pteropsis Conrad, Dall, 1272. 
Pteropurpura postii n. sp., Dall, 1269. 
cupanioides Newb., Knowlton, 3224. 
Pterospermitesdentatus Heer,Newberry,4083. 
haguei n. sp., Knowlton, 3255. 
longeacuminata n. sp., Lesquereux, 3470. 
modestus n. sp., Lesquereux, 3470. 
modestus Lesq., Hollick, 2696. 
undulatus n. sp., Knowlton, 3264. 
vvardii n. sp., Knowlton, 3264. 
Pterosphenus schucherti n.gen. etsp., Lucas, 
3583. 
Pterostichus pumpellyi n. sp., Scudder, 4900. 
walcotti n. sp., Scudder, 4900. 
Pterotocrinus Lyon and Cass., Wachsmuth 
and Springer, 5765a. 
acutus, var. bifurcatus (Wetherby), 
Wachsmuth and Springer, 5765a. 
acutus Wetherby, Wachsmuth and 
Springer, 5765a. 
capitalis (Lyon), Wachsmuth and Spring- 
er, 5765a. 
chesterensis Meek and Worthen, Wachs- 
muth and Springer, 5765a. 
coronarius Lyon, Wachsmuth and Spring- 
er, 5765a. 
crassus Meek and Worthen, Wachsmuth 
and Springer, 5765a. 
depressus Lyon and Cass., Wachsmuth 
and Springer, 5765a. 
pyramidalis Lyon and Cass., Wachsmuth 
and Springer, 5765a. 
Pterotocrinus chesterensis (Meek and Wor- 
then), Keyes, 3061. 
wetherbyi n. sp., Miller and Gurley,3997d. 
Pterygometopus callicephalus Hall (sp.), 
Clarke, 952. 
eboraceus n. sp., Clarke, 952. 
intermedius Walcott (sp.) 1877,Clarke, 952. 
schmidti n. sp., Clarke, 952. 
Ptilocella n. gen., Simpson, 4983. 
Ptilodictya Lonsdale, Grabau, 2086. 
Ptilodictya Simpson, 4983. 
Ptilodictya Lonsdale, Ulrich, 5537. 
plumea Hall, Grabau, 2086. 
Ptilodus Cope, Osborn, 4184. 
Ptilopora, Simpson, 4983. 
sp., Girty, 2038. 
Ptiloporella, Simpson, 4983. 
Ptiloporina, Simpson, 4983. 
Ptilotrypa, Simpson, 4983. 
Ptomatis forbesi n. sp., Clarke, 976. 
Ptychoceras, Hyatt, 3819. 
crassum Whitfield, Hyatt, 3819. 
near crassum, Harris, 2335. 
texanum Shum., Hyatt, 3819. 
(Selenoceras) annulifer Whitfield, 6097. 
Ptychocrinus Wachsmuth and Springer, 
James, 2889. 
angularis Miller and Dyer, James, 2889. 
parvus Hall, James, 2889. 
splendens (S. A. Miller), Keyes, 3061. 
Ptychodesma cf. P. minor Hall, Weller, 5994. 
Paleontology — Continued. 
Gt n< ra and specu s described — Continued. 
Ptychodus agassiz, Williston, 6259. 
anonynmsn. sp., Williston, 6259. 
janewayii, Williston, 6259. 
martini n. sp., Williston, 6259. 
mortoni, Williston, 6259. 
occidentalis n. sp., Williston, 6259. 
polygyrus, Williston, 6259. 
whippleyi, Williston, 6259. 
Ptychonema, Simpson, 4983. 
helderbergise Hall, Clarke, 971. 
Ptychoparia,Hawle and Corda, Matthew,3788. 
adamsi Billings sp., Matthew, 3776. 
(E.) affinis Walcott, Walcott, 5816. 
antiqua Salter sp., Walcott. 5816. 
(?) attleborensis Shaler and Foerste, 
Grabau, 2092. 
calymenoides (Whitfield), Berkey, 429. 
(?) diademata Hall sp., Walcott, 5816. 
kingi, Beecher, 366. 
limbatan. sp., Matthew, 3776. 
linnarssoni, Beecher, 366. 
llanoensis Waleott (?), Walcott, 5816. 
monile, Beecher, 366. 
penfieldi n. sp., Walcott, 5816. 
rogersi Walcott, Grabau, 2092. 
(Atops) trilineata, James, 2893. 
(Lonochocephalus) wisconsensis, Owen 
sp., Walcott, 5816. 
sp. undet., Walcott, 5816. 
Ptychophyllum benedicti, n. sp., Greene, 
2162c. 
gemmatum, n. sp., Greene, 2162c. 
robustum, n. sp., Greene, 2162d. 
Ptychopyge ulrichi n. sp., Clarke, 952. 
Ptychosiagum, Case, 768. 
Ptychospira n. gen., Hall and Clarke, 2261, 
2264. 
Ptyctodus calceolus, Eastman, 1601. 
compivssus n. sp., Kastman, 1601. 
ferox n. sp., Eastman, 1601. 
obliquus, Eastman, 1601. 
major, Eastman, 1601. 
molaris, Eastman, 1601. 
panderi n. sp., Eastman, 1601. 
Ptyonius, Case, 7t".7. 
Ptysmaphora n. gen., Scudder, 4895. 
fletcheri n. sp., Scudder, 4895. 
Pugnax, n. snbgen., Hall and Clarke, 2261a. 
striatocostata (M. and W.) var.?, Weller, 
6006. 
Pugnellusfusii'ormis Meek, Herrickand John- 
son, 2465. 
fusiformis (Meek), Stanton, 5191. 
Pulchellia bentonianum n. sp., Cragin, 1115. 
mexicana n. sp., Agnilera, 57. 
Pullenia multilobata n. sp., Chapman, 870. 
sphseroides (d'Orbigny), Chapman, s70. 
Pulvinulina elegans, Bagg, 1 18. 
haueri d'Orbigny sp., Woodward and 
Thomas, 567. 
karsteni (Reuss), Bagg, 150. 
menardii d'Orbigny sp., Woodward and 
Thomas, 6433. 
micheliniana (d'Orhigny), Bagg, 150. 
reticulata Reuss, var. carinata Bagg, Bagg, 
150. 
