weeks.] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1895. 125 
Paleontology— Continued. 
Genera and species described— Continued . 
TTnio 
barbouri n. sp., "White, 534. 
belliplicatus Meek, White, 535. 
vetustus Meek, White, 535. 
Vaginoceras belemnitiforme, Hyatt, 232. 
Venericardia trapaquara n. sp., Harris, 185. 
Verneulina pygmaea Egger sp., "Woodward 
and Thomas, 567. 
Vinolla Ulrich, Ulrich, 485. 
repens Ulrich, Ulrich, 485. 
Vitis rotundifolia Newberry, Knowlton, 270. 
Viviparus couesi White, White, 535. 
Volutihtbes dalli n sp., Harris, 185. 
Volvaria gabbiana n. sp., Harris, 185. 
Volvula? smithvillensis n. sp., Harris, 185. 
Waldheinria irubricata n. sp., Cooper, 91. 
Woodocrinus elegans (Hall), Keyes, 257. 
XiphosphsBra, Matthew, G. F., 318. 
Xylobius 
dawsoni Scudder, Scudder, 426. 
similis Scudder, Scudder, 426. 
Zamia washingtoniana n. sp.. Ward, 517. 
Zaphrentis 
acuta White and Whitfield, Keyes, 257. 
calceola White and Whitfield, Keyes, 257. 
centralis Worthen, Keyes, 257. 
cylindrica Worthen, Keyes, 257. 
dalei Edwards and Haime, Keyes, 257. 
elliptica White, Keyes, 257. 
illinoisensis Worthen. Keyes, 257. 
spinulosa Edwards and Haime, Keyes, 
257. 
tantilla Miller, Keyes, 257. 
tenella Miller, Keyes, 257. 
Zatrachys 
conchigerus n. sp., Cope, 93. 
icrophthalmus n. sp., Cope, 93. 
Zizyphus townsendi n. sp., Knowlton, 270. 
Zygospira Hall, Winchell and Schuchert, 562. 
modesta (Say) Hall, Winchell and Schuch- 
ert, 562. 
modesta (Say), Keyes, 258. 
recurvirostra Hall, Winchell and Schuch- 
ert, 562. 
uphami W. and S., Winchell and Schuch- 
ert, 562. 
Pennsylvania. 
American bison in Pennsylvania, Ehoads, 
394. 
[Carboniferous formation, Pennsylvania], 
Lesley, D'Invilliers, and Smith, 292. 
[Carboniferous system, Pennsylvania], D'ln- 
villiers, 120. 
Chalfont fault rock, Lyman, 305. 
Does the Delaware water gap consist of two 
river gorges ? Walter, 515. 
Exploration of Irwin's Cave, Pennsylvania, 
Mercer, 333. 
Fossil vertebrata from Port Kennedy, Pa., 
Cope, 95. 
Manganese, Weeks, 525. 
New Eed of Bucks and Montgomery counties, 
Pa., Lyman, 303. 
Nickel and pyrrhotite deposits, Kemp, 243. 
Pennsylvania— Continued. 
[Nickel mine at Lancaster Gap, Pa.], Olcott, 
360. 
Southern ice limit in Pennsylvania, Williams, 
E.H.,540. 
Stratigraphic base of the Cambrian, Winchell, 
N. H., 550. 
Terraces of the Ohio and Beaver rivers, Hice, 
209. 
The Port Kennedy deposit, Pennsylvania, 
Heilprin,203. 
Trap dikes in Chester County, Pa., Band, 
384. 
Tardley fault, Pennsylvania, Lyman, 304. 
Petrology. 
Arkansas. 
Origin of the Arkansas novaculites, Griswold, 
178. 
California. 
Age and succession of the igneous rocks of 
the Sierra Nevada, Turner, 475. 
Analcite diabase from Cali fornia, Fairbanks, 
137. 
Geology of the San Francisco peninsula, Law- 
son, 285. 
Smartsville folio, California, Lindgren and 
Turner, 298. 
Canada. 
Camptonite and other intrusives of Lake 
Memphremagog, Marsters, 315. 
Contribution to our knowledge of the Lau- 
ren tian, Adams, 2. 
Dikes containing huronite, Barlow, 28. 
Effusive and dike rocks near St. John, N. B., 
Matthew, W.D., 324. 
Geology of a portion of Ontario, Adams, 3. 
On malignite, Lawson, 286. 
Volcanic rocks of the maritime provinces of 
Canada, Matthew, W. D., 326. . 
Colorado. 
Geology of Cripple Creek, Colo., Cross, 102. 
Granites of Pikes Peak, Colorado, Matthews, 
327. 
District of Columbia. 
Disintegration of the granitic rocks of the 
District of Columbia, Merrill, G. P., 343. 
Idaho. 
Occurrence of copper in western Idaho, Pack- 
ard, 365. 
Maine. 
Spherulitic volcanics at North Haven, Me., 
Bayley, 33. 
Maryland. 
Acidic eruptions of Maryland, Keyes, 263. 
Granitic rocks in the Piedmont plateau, Wil- 
liams, G. H., 541. 
Origin and relations of Maryland granites, 
Keyes, 251. 
Secular decay of granitic rocks, Keyes, 
259. 
Massachusetts. ( 
Geology of the Boston Basin, Crosby, 100. 
Michigan. 
Marquette iron district, Michigan, Van Hise 
and Bayley, 503. 
Volcanics of the Michigamme district, Mich- 
igan, Clements, 86. 
