WEEKS.] 
PETROLOGY, AND MINERALOGY FOR 1892-1900. 
297 
Paleontology— Continued. 
Genera and species described — Continued. 
Waldheimia-catorcensis n. sp., Aguilera, 50. 
imbricata n. sp., Cooper, 1071. 
Warthia Waagen, Ulrieh and Scofield, 5541. 
Watsonella n. gen., Grabau, 2092. 
crosbyi n. sp., Grabau, 2092. 
Weichselia reticulata (Stokes & Webb) Ward 
n. comb., Fontaine, 1850. 
\\ hi U-ll i Ulrieh, Ulrieh, 5533. 
compressa Ulrieh, Ulrieh, 5539. 
concentrica n. sp., Ulrieh, 5534,5539. 
megambona Whitfield, Ulrieh, 5539. 
obliquata Ulnch, Ulrieh, 5539. 
ohioensis n. s]>. or var., Ulrieh, 5534. 
prsecipta, Ulrieh, 5534,5539. 
quadrangularis Whitfield, Ulrieh, 5539. 
rugatir.a n. sp., Ulrieh, 5539. 
scofieldi Ulrieh, Ulrieh, 5539. 
sterlingensis Meek and Worthen, Ulrieh, 
5539. 
subcarinato n. sp., Ulrieh, 55:59. 
truncata Ulrieh, Ulrieh, 5539. 
ventricosa Hall, Ulrieh, 5539. 
Whitneldella Hall, Hall and Clarke, 2261, 
2264. 
Whittleseya eampbelli n. sp.. White, 6052. 
elegans Newb. var. minor n. var., White, 
6052. 
microphylla Lx., White, 6052. 
Widdringtonia? complanata Lx., Knowlton, 
3264. 
Widdringstonites reichii (Ett.) Heer (?), Hol- 
lick, 2695. 
reichii (Ett.) Heer, Newberry, L080; 
subtilis Heer, Newberry, 4080. 
Williamsonia elocata n. sp.. Lesquereux; 3470. 
? phu-nicopsoides Ward n. sp.. Fontaine, 
L850. 
smockii n. sp., Newberry, 4080. 
texana n. sp., Fontaine, L846, 1847. 
Wilsonia(Quenstedt) Kayser, Hall and Clarke, 
2261a, 2264. 
Winchellia, Lesquereux, 3471. 
Winchellina fascina n. gen. e< sp., Herzer, 
2499. 
fascina, Knowlton, 3226. 
Woodocrinus elegans (Hall), Keyes, 3061. 
Woodwardia crenata n. sp., Knowlton, 3264. 
preareolsea n. sp., Knowlton, 3255. 
sp., Knowlton, 3264. 
Worthenopora, Simpson, 4983. 
Xantholinns tenebrarins n. sp., Seudder, 4900. 
XenocrinusS. A. Miller, James, 2889. 
penieillus S. A. Miller, James, 2889. 
bseri Meek, James, 2889. 
Xenodus hertzeri, Hay, 2381. 
Xenopbora conch yliophora Born.,Harris,2316. 
conchyliophora Born., Dall, 1259. 
lapiferensn. sp., Whitfield, 6097. 
leprosa, Whitfield, 6097. 
simpsoni n. sp., Stanton, 5191. 
sp., Harris, 2310. 
Xerobatus (?) undata Cope, Gilbert, 2022. 
Xiphactinus Leidy, Stewart, 5241. 
brachygnathus n. sp., Stewart, 5241. 
molossus Cope, Stewart, 5238. 
Paleontology — Continued. 
Genera and species described — Continued. 
Xiphactinus thaumas Cope, Stewart, 5238. 
Xiphosphaera, Matthew, G. F., 3760. 
Xylobius dawsoni Seudder, Seudder, 4897. 
similis Seudder, Seudder, 4897. 
Xylophaga, Turton, Dall, 1272. 
Yoldia, Moller, Dall, 1272. 
aldrichiana, Harris, 2313. 
corpulentoides n. sp., Aldrich, 73. 
eborea. Harris, 2310. 
frater n. sp., Dall, 1272. 
glabra n. sp., Beede and Rogers, 396. 
kindlei n. sp., Harris, 2310. 
lsevis, Say, Dall, 1272. 
limatula, Whitfield, 6101. 
psammotaea n. sp., Dall, 1272. 
septariana n. sp., Cragin, 1115. 
subelliptica n. sp., Stanton, 5191. 
tarpaeia n. sp., Dall, 1272. 
Yorkia n. gen., Walcott, 5808. 
gramineoides Ward n. sp., Ward. 5857. 
wanneri n. sp., Walcott, 5808. 
(?) washingtonensis n. p., Walcott, 5808. 
Zacanthoides spinosus Walcott, Matthew,3788. 
sp. undet., Walcott, 5816. 
Zamenis acuminatus < lope, Cope, 1104. 
Zamia washingtoniana n. sp.. Ward, >8 16. 
Zamiostrobus virginiensis Fontaine, Ward, 
5857. 
Zamites borealis Heer, Fontaine, 1850. 
brevipennis Heer, Fontaine, 1850. 
montana, Haw-on, 1 134. 
pennsylvanicus Fontaine n. sp.. Ward 
58 .7. 
tenuinervis Font.. Fontaine, 1846. 
yorkensis Fontaine n. sp., Ward, 5857. 
(?) Fontaine, 1850. 
sp., Lesquereux, :S470. 
Zanclodon, Case, 768. 
Zaphrentis Etafinesque, Grabau, 2086. 
acuta White and Whitfield, Keyes, 3061. 
acuticornis n. sp., Greene, 2162. 
albersi q. sp., Greene, 2162d. 
ampliatus u. sp., ( treene, 2162a. 
bre\ Lcornis n. sp., < rreene, 2162d. 
calceola White and Whitfield, Keyes, 3061. 
ealyeulusn. sp., Miller. 3992. 
capuliformis n. sp., Rowley, 4677a. 
centralis, Worthen, Keyes, 3061. 
choteauensis n. sp., Miller, 3992. 
comis n. sp.. Greene, 2162a. 
cylindrica Worthen, Keyes, 3061. 
dalei Edwards and Haime, Keyes, 3061. 
declinis n. sp., Miller, 3992. 
elliptica White, Keyes, 3061. 
exigua n. sp., Miller, 3992. 
gigantea Lesueur sp., Lambe, 3375. 
grosbachi n. sp., Greene, 2162d. 
hobbsi n. sp., Greene, 2162b. 
humilis n. sp., Greene, 2162. 
illinoisensis Worthen, Keyes, 3061. 
ischypus n. sp., Greene, 2162a. 
jacksoni n. sp., Greene, 2162c. 
limatus n. sp., Greene, 2162. 
minas Dawson, Lambe, 3375. 
mirabilis Billings sp., Lambe, 3375. 
