298 INDEX TO NORTH AMERICAN GEOLOGY, PALEONTOLOGY, [bull. 189. 
Paleontology— Continued . 
and species described — Continued. 
Zaphrentis nanus n. sp., Greene, 2162c. 
obliquatis n. sp.', Greene, 2162b. 
(?) ohioenais, James, 2881. 
oppelti n. sp., Greene, 2162d. 
radicula n. sp., Rowley, 4677a. 
sellersi n. sp., Greene, 2162b. 
simplex Hall, Grabau, 2086. 
spinulosa Edwards and Haime, Keyes, 
3061. 
varians n. sp., Greene, 2162. 
tantilla n. sp., Miller, 3992. 
taut ilia Miller, Keyes, 3061. 
tenella n sp., Miller, 3992. 
tenella Miller, Keyes, 3061. 
sp., Clarke, 971. 
Zatrachys conchigerus n. sp., Cope, 1097. 
icrophthalmus n. sp., Cope, 1097. 
Zeacrinus bellulus n. sp., Miller and Gurley, 
3997a 
commaticus, Miller, 3992. 
cylindricus n. sp., Miller and Gurley, 
3997c. 
doverensis n. sp., Miller and Gurley, 3999. 
dubius n. sp., Miller and Gurley, 3991. 
durabilis n. sp., Miller and Gurley, 3997d. 
grandiculus n. sp., Miller and Gurley, 
3997c. 
kentuckiensis n. sp., Miller and Gurley, 
3999. 
nitidus n. sp., Miller and Gurley, 3997a. 
obesus n. sp., Miller and Gurley, 3997a. 
peculiaris n. sp., Miller and Gurley, 3999. 
pulaskiensis n. sp., Miller and Gurley, 
3997d. 
? robustus n. sp., Beede, 397. 
salemensis n. sp., Miller and Gurley, 
3997c. 
scoparius, Whitfield, 6098. 
Zearinus mooresi, Whitfield, 6099. 
Zellani Moore, Hall and Clarke, 2264. 
Zemites tenuinervis Font., Fontaine, 1847. 
Zenatia, Gray, Dall, 1272. 
Zephrentis cliffordana, Whitfield, 6099. 
Zephyroceras cataphracturn n. sp., Clarke, 960. 
holzapfeli n. sp., Clarke, 960. 
Zirfsea crispata Linne, Dall, 1272. 
Zizphus dakotensis, n. sp. Lesquereux, 3470. 
elegans n. sp., Hollick, 2672. 
longifolia Newb., Newberry, 4083. 
obtusa, n. sp. Kirchner, 3187. 
serrulata Ward, Knowlton, 3255. 
townsendi n. sp. Knowlton, 3232. 
Zophocrinus S. A. Miller, Weller, 6002. 
howardi n. gen. et sp., Miller, 3992. 
howardi S. A. Miller, Weller, 6002. 
Zygospira Hall, Hall and Clarke, 2261, 2264. 
Zygospira Hall, Winchell and Schuchert, 
6319. 
modesta (Say), Hall, Winchell and Schu- 
chert, 6319. 
modesta (Say), Keyes, 3062. 
putilla, n. sp., Hall and Clarke, 2263. 
putilla, Hall and Clarke, 2261a, 2268. 
recurvirostra, Beecher and Schuchert, 358. 
recurvirostra, Schuchert, 4837. 
Paleontology— NContinued. 
Genera and species described— Continued. 
Zygospira recurvirostra Hall, Winchell and 
Schuchert, 6319. 
uphami, Winchell and Schuchert, 6298, 
6319. 
(Catazyga) n. subgen., Hall and Clarke, 
2261, 2264. 
(Orthonomsea) Hall, Hall and Clarke, 
2264. 
Panama. 
Foraminifera deposits near Bujio, Bagg, 149. 
Geological history of Panama and Costa Rica, 
Hill, 2557. 
Gold deposits of Panama, Hershey, 2489. 
Igneous rocks from Panama, Wolff, 6412. 
Paleontology of collections, Dall, 1274. 
Sur Page des couches traversees par le canal 
de Panama, Douville, 1533. 
Pennsylvania. 
A phosphate prospect in Pennsylvania, Ihl- 
seng, 2857. 
Age of Philadelphia brick clay, Wright, 6518. 
American bison in Pennsylvania, Rhoads, 
4584. 
Amphibian footprints, Marsh, 3699. 
Another river pirate, Ward, R. DeC, 5860. 
Anthracite, Pennsylvania, Stevenson, 5218. 
Appalachians, drainage of the Pennsylvania, 
Davis, 1348. 
Aporhyolite of South Mountain, Bascom, 279. 
Artesian wells, Carter, 754a. 
Atlas to Rept. F. 3, Lesley, 3469. 
Birdsboro trap quarries, Rand, 4527. 
Bituminuous Coal Measures of the Appala- 
chians, Ramsay, 4547. 
Blossburg coal region, Hardt, 2289. 
Bone cave at Port Kennedy, Mercer, 3913. 
Brownstones of Pennsylvania, Hopkins, 2738. 
Building materials of Pennsylvania, Hopkins, 
2741. 
Cambrian rocks of Pennsylvania, Walcott, 
5790, 5804. 
Cambrian rocks of Pennsylvania and Mary- 
land, Walcott, 5779. 
Cambro-Silurian limonite ores of Pennsyl- 
vania, Hopkins, 2752. 
[Carboniferous formation, Pennsylvania], 
Lesley, D'Invilliers, and Smith, 3468. 
[Carboniferous system, Pennsylvania], D'In- 
villiers, 1515. 
Chalfont fault rock, Lyman, 3612. 
Chrome in the Appalachian region, Glenn, 
2042. 
Clays of Pennsylvania, Hopkins, 2746. 
Coal Measures of Clearfield County, Kemp, 
2974. 
Concentric weathering, Hopkins, 2743. 
Cone-in-cone, Gresley, 2175. 
Conglomerate above mammoth anthracite 
bed Lyman, 3605. 
Continuity of the Glacial period, Wright, 6510. 
Copper traces in Pennsylvania, Lyman, 3616. 
Devonian of eastern Pennsylvania and New 
York, Prosser, 4484. 
Devonian plants from New York and Penn- 
sylvania, Penhallow, 4333. 
