Index. 263 
Nomenclature, Code of, 235. 
Odontosphindus denticollis, 252. 
ORTON, PROF. E., on the Cincin- 
nati uplift, 56. 
Phyllotreta lewisii, 254. 
Phyllotreta lindahli,n.sp., 254. 
Pisolitic barite, 245. ; 
Platystrophia lynx Beds, 85. 
Pleurophorus ventralis Horn, 154, 
fig. 
Point Pleasant Beds, 56, 60. 
Preglacial drainage of south west- 
ern Ohio, 51. 
Psomus politus, 256. 
Ptilinus ruficornis, 252. 
Ptinidium lineatum, 251. 
Rat, white, ganglion cells of, 6. 
Richmond Group, 60, 64, 88. 
River Quarry Beds, 56. 
RUEDEMAN, RUDOLF, on the Hud- 
son River group, 56. 
Scopeopsis duryi, 251. 
Stmpson’s (C. T.) Synopsis of the 
Naiades, Errors of nomenclature 
in, 235. 
THRASHER, B. P., sent pisolitic 
barite, 245. 
Torpedo occidentalis, Nevrones in 
electric lobes of, 1-12, Pl. I. 
Trenton Period, 60, 96. 
ULRICH, Dr. E. O., 55, 57, 62, 87, 
8g, 100, I05, 245. 
Utica group, 58, 64, 66, 96. 
VANUXEM, LARDNER, correlation 
of Ohio and New York rocks, 53. 
Vascular system of Adellostoma, 
13, figs. 
VAUGHAN, Dr. T. W., acroporid 
coral from Texas, 246. 
WaLcoTt, CH. D., defining the 
Hudson Terrane, 55. 
WALDBOTT, DR. S., analysis of 
pisolitic barite, 249, 250. 
WALKER, BRYANT, quoted on a 
question of nomenclature, 236. 
Warren Beds, 86, 98. 
WUESTNER, HERMAN: 
Barite, 245-250. 
(Zygobaris) Idiostethus subcalvus, 
plas 
Pisolitic 
