PETROLOGY, AND MINERALOGY FOR 1892-1900. 
261 
Paleontology— Continued. 
Qt in ra a ml species described — Continued. 
Platycrinus eminulus Hall, Wachsmuth and 
Springer, 5765a. 
eriensis Hall, Grabau, 2086. 
eriensis Hall, Wachsmuth and Springer, 
5765a. 
excavatus Hall, Wachsmuth and Springer, 
5765a. 
excavatus, Whitfield, 6098. 
formosus n. sp., Miller and Gurley, 3998. 
formosus, var. approximatus n. var., 
Miller and Gurley, 4001. 
geometricus W. and Sp. (nov. spec), 
Wachsmuth and Springer, 5765a. 
germanns n. sp., Miller and Gurley, 3998. 
glyptUS Hall, Wachsmuth and Springer, 
5765a. 
gorbyi S. A. Miller, Waehsmuth and 
Springer. 5765a. 
graphicus Hall and Whitf., Wachsmuth 
and Springer, 5765a. 
halli Shumard, Keyes, 3061. 
halli Shum., Wachsmuth and Springer. 
5765a. 
hemisphericus M. and \v.. Wachsmuth 
and Springer, 5765a. 
hodgsnni n. sp., Miller and Gurley, 3999. 
huntsvillse Troosl Ms.. Wachsmuth and 
Springer, 5765a. 
illinoisensis n. sp., Miller and Gurley, 
3999. 
incomptus White, Wachsmuth and 
Springer, 5765a. 
insolens Rowley and Hare. Wachsmuth 
and Springer, 5765a. 
lodensis Hall and Whitf., Wachsmuthand 
Springer, 5765a. 
missouriensis n. sp., Miller and Gurley, 
3998. 
modestns n. sp., Miller and Gurley, 3998. 
oiotensis M. and \\'.. Wachsmuth and 
Springer, 5765a. 
nodo-striatus \V. and Sp. (nov. spec.), 
Wachsmuth and Springer, 5765a. 
ollicula S. A. Miller, Wachsmuth and 
Springer, 5765a. 
ornigranulus McChesney, Wachsmuth 
and Springer, 5765a, 
parvinodus Hall, Wachsmuth and 
Springer, 5765a. 
peculiaris W. and sp. (nov. spec), Wachs- 
muth and Springer, 5765a. 
pettisensis n. sp., Miller and Gurley, 3998. 
pilciformis. Hall, Keyes, 3061. 
pileiformis Hall, Wachsmuthand Spring- 
er, 5765a. 
pisum Rowley and Hare, Wachsmuth and 
Springer, 5T65a. 
planus O. and Sh., Wachsmuth and 
Springer, 5765a. 
pocilliformis Hall, Wachsmuth and 
Springer, 5765a. 
pratenni Worthen, Keyes, 3061. 
pratteni Worthen, Wachsmuth and 
Springer, 5765a. 
quinquenodus White, Wachsmuth and 
Springer, 5765a. 
Paleontology — Continued. 
Genera and species described — Continued. 
Platycrinus regalis Hall, Wachsmuth and 
Springer, 5765a. 
saffordi Hall, Wachsmuth and Springer, 
5765a. 
saffordi Troost, Keyes, 3061. 
sampsoni Miller, Keyes 3061. 
sampsoni S. A. Miller, Wachsmuth and 
Springer, 5765a. 
sarse Hall, Wachsmuth and Springer, 
5765a. 
SCObina M and W., Wachsmuth and 
Springer, 5765a. 
sculptus Hall, Keyes, 3061. 
sculptus Hall, Wachsmuth and Springer, 
5765a. 
sharonensis n. sp., Miller and Gurley, 
4003. 
spinifervar. clongatus W. and Sp. (nov. 
var.), Wachsmuth and Springer, 5765a. 
spinifer W. and Sp. (nov. spec), Wachs- 
muth and Springer, 5765a. 
striobrachiatus, Whitfield, 6098. 
subscitulus n. sp., Miller and Gurley, 
4000. 
subspinosus Hall, Wachsmuth and Spring- 
er, 5765a. 
subspinulosus Hall, Wachsmuth and 
Springer, 5765a. 
sulciferus n. sp., Miller and Gurley, 3998. 
symmetries Waehsmuth and Springer, 
Girty, 2038. 
symmetricus W.and Sp., Waehsmuth and 
Springer, 5765a. 
tenuibrachiatus M. and W., Wachsmuth 
and Springer, 5765a. 
tigurium n. sp., Miller and Gurley, 3998. 
truncatulus Hall, Waehsmuth and 
Springer, 5765a. 
vascellum n. sp., Miller and Gurley, 
3997d. 
verrucosus White, Wachsmuth and 
Springer, 5765a. 
wnitheni Hall, Wachsmuth and Springer, 
5765a. 
yandelli 0. and Sh. (typical form), Waehs- 
muth and Springer, 5765a. 
yandelli, var. perasper Shum., Waehs- 
muth and Springer, 5765a. 
Platygonus, Williston, 6227. 
hicalearatus Cope. Cope, 1087. 
rex n. sp., Marsh, 3690. 
Platymetopus bicornis Ulrich (sp.), 1892, 
Clarke, 952. 
cucullus Meek and Worthen (sp.), 1865, 
Clarke, 952. 
robbinsi Ulrich (sp.), 1892, Clarke, 952. 
Platynus Bonelli, Scudder, 4896. 
casus, Scudder, 4896. 
desuetus, Scudder. 4896. 
dilapidatus, Scudder, 4896, 4900. 
dissipatus, Scudder, 4896. 
halli, Scudder, 4896. 
harttii, Scudder, 4896. 
hindei, Scudder, 4896. 
tartareus n. sp., Scudder, 4900. 
