260 INDEX TO NORTH AMERICAN GEOLOGY, PALEONTOLOGY, [bull. 189. 
Paleontology— Continued. 
Genera and species described — Continued. 
Platanus primseva integrifolia, Lesquereux, 
3470. 
primseva subintegrifolia, Lesquereux, 
3470. 
raynoldsii Newb., Newberry, 4083. 
ivardii n. sp., Knowlton, 3264. 
Platecarpus, Williston, 6238, 6245, 6249, 6252, 
< lidastoides, Williston, 6245. 
coryphaeus Cope, Baur, 299. 
coryphseus, Williston, 6245. 
crassartus, Williston, 6245. 
felix, Williston, 6245. 
glandiferus, Williston, 6245. 
gracilis, Williston, 6245. 
ictericus, Williston, 6245. 
latifrons, Williston, 6245. 
latispinis, W T illiston, 6245. 
mudgei, Williston, 6245. 
oxyrhinus, Williston, 6245. 
planifrons, Williston, 6245. 
simus, Williston, 6245. 
tectulus, Williston, 6245. 
Platidia Costa, Hall and Clarke, 2264. 
Platyceras Conrad, Girty, 2038. 
Platyceras Conrad, Grabau, 2086. 
Platyceras Conrad, Matthew, 3790. 
boonvillense n. sp., Miller, 3992. 
bucculentum Hall, Grabau, 2086. 
carinatum Hall, Grabau, 2086. 
deflecturn n. sp., Grabau, 2092. 
(?) depressum n. sp., Ulrich and Scofield, 
5541. 
erectum Hall, Grabau, 2086. 
cf. gebhardi Hall, Clarke, 971. 
hartti n. sp., Clarke, 976. 
hussaki n. sp., Clarke, 976. 
indianense n. sp., Miller and Gurley, 
4003. 
missouriense n. sp., Miller, 3992. 
nasutum n. sp., Miller, 3992. 
niagarense, var. clintonense n. var., 
Foerste, 1835. 
nodosum Conrad, Clarke, 971. 
pettisense n. sp., Miller, 3992. 
primaevum Billings, Grabau, 2092. 
primordialis Hall ?, Walcott, 5816. 
radiatum, Matthew, 3790. 
squalodens, Whitfield, 6099. 
steinmanni n. sp., Clarke, 976. 
symbula, Matthew, 3790. 
symmetricum, Grabau, 2086. 
symmetricum, Hall (?) , Clarke, 976. 
var, maecuruense, n. var., Clarke, 976. 
thetis Hall, Grabau, 2086. 
transversum, Matthew, 3790. 
whitii n. sp., Clarke, 976. 
var. curua n. var., Clarke, 976. 
wisconsinensis n. sp., Ulrich and Scofield, 
5541. 
(Orthonychia) attenuatum Hall, Grabau 
2086. 
(Orthonychia) parvulurn n. sp., Whit- 
eaves, 6074. 
(Platystoma) niagarense, Foerste, 1835. 
Platycoenia jacksonensis n. sp., Vaughan 
5735. 
Paleontology— Continued. 
Genera and species described — Continued. 
Platycrinus Miller, Grabau, 2086. 
Platycrinus Miller, Wachsmuth and Springer, 
5765a. 
Platycrinus Miller, Weller, 6002. 
acclivus S. A. Miller, Wachsmuth and 
Springer, 5765a. 
gequalis Hall, Keyes, 3061. 
sequalis Hall, Wachsmuth and Springer, 
5765a. 
sequiternus S. A. Miller, Wachsmuth and 
Springer, 5765a. 
agassizi W. and Sp. (nov. spec), Wachs- 
muth and Springer, 5765a. 
alabamensis n. sp., Miller, 3992. 
allophylus (Miller), Keyes, 3061. 
allophylus S. A. Miller, Wachsmuth and 
Springer, 5765a. 
americanus O. and Sh., Wachsmuth and 
Springer, 5765a. 
americanus Owen and Shumard, Keyes, 
3061. 
asper M. and W., Waehsmuth and 
Springer, 5765a. 
bonoensis White, Wachsmuth and 
Springer, 5765a. 
boonvillensis S. A. Miller, Wachsmuth 
and Springer, 5765a. 
bozemanensis n. sp., Miller and Gurley, 
4003. 
brevinodus Hall, Wachsmuth and 
Springer, 5765a. 
bridgerensis n. sp., Miller and Gurley, 
4003. 
britisi S. A. Miller, Wachsmuth and 
Springer, 5765a. 
burlingtonensis O. and Shum., Wachs- 
muth and Springer, 5765a. 
burlingtonensis Owen and Shumard 
Keyes, 3061. 
caducus n. sp., Miller, 3995. 
canaliculars Hall, Wachsmuth and 
Springer, 5765a. 
casula n. sp., Miller and Gurley, 3998. 
cavus Hall, Wachsmuth and Springer, 
5765a. 
chouteauensis n. sp., Miller, 3995. 
clinatus n. sp., Miller and Gurley, 3998. 
clytis, Whitfield, 6098. 
colletti n. sp., Miller, 3995. 
concinnulus n. sp., Miller and Gurley, 
4000. 
contritus Hall and Whitf., Wachsmuth 
and Springer, 5765a. 
corbuliformis Rowley and Hare, Wachs- 
muth and Springer, 5765a. 
cortina n. sp., Miller and Gurley, 3997c. 
davisi W. and Sp. (nov. spec), Wachs- 
muth and Springer, 5765a. 
discoideus O. and Shum., Wachsmuth and 
Springer, 5765a. 
discoideus Owen and Shumard, Keyes, 
3061. 
douglassi n. sp., Miller and Gurley, 4001. 
(?) dubiusn. cp., Weller, 6002. 
elegans, Whitfield, 6098. 
