472 



LIFE OF THE PLEISTOCENE 



4i 



Scudder, 170, 207, 312, 331. 



Sedge, 276, 380. 



Segmentina armigera, 25, 29, 46, 47, 56, 58, 



72, 81, 88, 89, 92, 99, 103, 124, 138, 144, 



188, 225, 236, 237, 242, 261, 262, 266, 



267, 295, 308, 370, 387. 

 Sellards, 373. 



Sematophyllum recurvans, 334, 335, 377. 

 Shaler, 315. 



Shaw, 172, 272, 292, 298, 299, 353. 

 Shelbyville moraine, 129. 

 Sheldon, 325. 



Sheffield Avenue, Chicago, 60. 

 Shepard, 1. 

 Sherman, 177. 

 Sherzer, 322. 

 Shimek, 104, 122-124, 171, 172, 224-226, 231, 



232, 236, 237, 246-248, 250-254, 256, 257, 



260, 289, 309, 346-348, 358, 360, 363, 373. 

 Shimer, 177. 

 Shufeldt, 85. 

 Sigmodon hispidus, 373. 

 Silliman, 312. 



Silurid, 27, 88, 100, 103, 190, 393. 

 Silveria formation, 270. 

 Simpson, 10, 63, 83, 330. 

 Skelton, 154. 

 Skokie Bay, 111., 69. 

 Slocum A. W., 119, 120, 121, 136. 

 Smith, 79, 154, 277. 

 Snodgrass, 104. 

 SodusBay, N. Y., 401. 

 Soils, old Chicago, 106, 107. 

 Somatogyrus, 122. 



Somatogyrus depressus, 295, 338, 385. 

 Somatogyrus integer, 55, 90, 99, 123, 187, 



385. 

 Somatogyrus isogonus, 329, 338. 

 Somatogyrus subglobosus, 23, 26, 27, 81, 87, 



99, 102, 123, 187, 385. 

 South Bend, Ind., 134. 

 Sowerby, 147. 



Sparganium eurycarpum, 81. 

 Spencer, 156, 159, 197, 198, 322, 323. 

 Sphaerium, 122, 127, 150, 155, 158, 159, 



164, 162, 179, 180, 226, 264, 266, 288, 



300. 350, 358, 394. 

 Sphaerium acuminatum, 29, 44, 58, 72, 87, 



88, 92, 97, 102, 187, 384. 

 Sphaerium emarginatum, 46, 92, 97, 187, 



384. 



Sphaerium fabale, 81, 91, 332, 338, 383. 

 Sphaerium flavum, 23, 26, 29, 37, 38, 42, 72, 



82, 87, 91, 97, 102, 137, 138, 187, 383. 

 Sphaerium laevissimum, 23, 34, 91, 97, 102, 



187, 384. 

 Sphaerium occidentale, 58, 88, 97, 127, 138, 



187, 383. 

 Sphaerium rhomboideum, 23, 32, 33, 35, 82, 



87, 91, 97, 102, 119, 127, 145, 155, 156, 



157, 159, 162, 187, 330, 332, 338, 383. 

 Sphaerium simile, 11, 119, 120, 123, 132, 



135, 138, 143, 155, 156, 157, 160, 161, 162, 



164, 172, 187, 210, 212, 236, 237, 259, 

 330. 



Sphaerium solidulum, 23, 24, 29, 33, 38, 42, 

 72, 87, 91, 94, 97, 102, 125, 145, 160, 187, 

 295, 330, 338, 383. 



Sphaerium stamineum, 11, 23, 38, 42, 46, 72, 

 91, 94, 97, 102, 125, 149, 187, 336, 383. 



Sphaerium stamineum wisconsinensis, 42, 44, 

 72, 87, 92, 97, 102, 187, 383. 



Sphaerium striatinum, 23, 24, 27, 30, 34, 37, 

 39, 42, 44, 55, 72, 82, 87, 90, 91, 97, 102, 

 123, 135, 136, 139, 141, 145, 147, 149, 160, 

 162, 164, 165, 166, 172, 187, 210, 212, 

 232, 242, 260, 278, 281, 295, 330, 336, 

 383. 



Sphaerium sulcatum, 4, 23, 24, 26, 27, 29, 30, 

 33, 34, 39, 60, 72, 81, 82, 87, 90, 91, 94, 

 97, 102, 120, 121, 123, 125, 133, 135, 136, 

 137, 140, 141, 145, 156, 160, 161, 162, 164, 



165, 172, 187, 210, 212, 225, 236, 237, 

 242, 259, 260, 281, 295, 324, 303, 336, 383. 



Sphaerium torsum, 149, 187, 384. 

 Sphagnum, 207, 211, 276, 280, 377. 

 Sphyradium, 370. 

 Sphyradium edentulum, 143, 189. 

 Sphyradium edentulum alticola, 240, 242, 



252-257, 282, 288, 297, 308, 339, 343, 



352, 353, 359, 361, 362, 389. 

 Spillman, 156. 

 Sponges, 176. 

 St. Anthony, Falls of, 223. 

 St. Lawrence drainage, 330. 

 St. Lawrence Valley, 117, 181. 

 Stansfield, 163, 177, 180. 

 Stearns, 151, 157. 

 Steller, 326. 

 Sterki, 142, 143, 163. 

 Stewart. 168. 

 Stimpson, 79. 





