494 
Index 
Streptaster Septembranchiatus, central or substomial cavity of 429 
“ Strophomena and other fossils from Cincinnati and Mohawkian horizons, 
chiefly in Ohio, Indiana and Kentucky.” By Aug. A. Foerste 17 
Stropho — acuta, Winchell & Schuchert 115 
Stropho — cardinalis, Whitfield 108 
Strophomena concordensis, Foerste 59 
Strophemena concordensis^ — huronensis, var. nov 63 
Stropho^ — fluctuosa — occidentalis, noin. var 113 
Strophomena hallie, Miller 38 
Strophomena higginsportensis, sp. nov 37 
Strophomena incurvata, Shepard 24 
Strophomena maysvillensis, Foerste 47 
Strophomena millionensis, sp. var 45 
Strophomena neglecta, James 90 
Strophomena nutons, Meek 68 
Strophomena planoconvexa, Hall 54 
Strophomena planodorsata, Winchell and Schuchert 109 
Strophomena planumbona, Hall 73 
Strophomena planumbona-elongata, James 81 
Strophomena planubona-gerontica var. nov 87 
Strophomena planumbona, variety 260 
Strophomena planumbona-subtenta. Hall 84 
Strophomena rugosa, Blainville 87 
Strophomena sinuata, Meek 57 
Strophomena sulcata, Verneuil 102 
Strophomena vetusta, James 98 
Strophomena vetusta-approximata, James 101 
Strophomena vetusta-precursor, var. nov 95 
Strophomena vicina, Foerste 28 
Strophomena wisconsinensis, Whitfield 108 
Subdivision of the interior of a plane curve 376 
Summit county, Ohio 390 
Surface feature of the Bellevue quadrangle, Ohio 232 
Taeniaster meafordensis, sp. nov 326 
Taylor, F. B. On Lake Maumee basin 234 
Technophorus punctostriatus — quincuncialis, var. nov 316 
Temperature, Ohio 192 
Influenced by altitude 193 
Influenced by latitude 192 
Influenced by bodies of water 193 
Thompson, Jr., James D. “Locust Grove esker, Ohio.” 395 
Thresherodiscus, floor plates of 421 
Thresherodiscus ramosa, diagram of ray system 434 
Thresherodiscus ramosa, gen. et sp. nov 432 
Tight, Dexter J. and Nixon, Harmon A. “Drainage changes in the 
Moot’s Run area. Licking Co., Ohio.” 219 
Trematospira granulifera, Meek 133 
Tuscarawas county, Ohio 390 
