INDEX 



469 



Polygyra sayana, 157, 162, 189, 390. 

 Polygyra sayii, 157, 162, 189. 

 Polygyra stenotrema, 303, 339, 363, 390. 

 Polygyra thyroides, 125, 143, 144, 189, 



266, 268, 269, 282, 303, 307, 308, 



334, 339, 355, 359, 390. 

 Polygyra tridentata, 144, 157, 159, 189, 



314, 339, 362, 390. 

 Polygyra zaleta, 142, 189, 269, 282, 



339, 390. 

 Pomatiopsis lapidaria, 99, 123, 143, 144, 



187, 257, 267, 281, 303, 306-309, 



338, 385. 

 Pontederia cordata, 81. 

 Pontoporeia, 402. 

 Pontoporeia affinis, 79. 

 Pontoporeia fisicornis, 79. 

 Pontoporeia hoyi, 79. 

 Populus, 228, 241, 379. 

 Populus balsamifera, 29, 71, 101, 178, 



194, 329, 336, 379. 

 Populus grandidentata, 178, 180, 185, 



336, 379. 

 Port Huron, 17, 115. 

 Port Huron- Chicago stage, 105. 

 Port Huron-Whitehall moraine, 75, 76. 

 Port Kennedy fauna, 368. 

 Port Stanley, 199. 

 Portage, Wis., 75, 112, 199. 

 Post-Glenwood stage, 3, 8, 11, 12, 16. 

 Postglacial deposits. 



Canada, 156-164, 176-182, 193. 



Connecticut, 154, 155, 171. 



Illinois, 122-129. 



Indiana, 130-132. 



Iowa, 171-176. 



Massachusetts, 169-171. 



Maine, 155. 



Michigan, 132-136, 139-141, 149. 



Minnesota, 164-167. 



New Brunswick, 182. 



New Jersey, 168, 169. 



New York, 147-154, 157. 



North Dakota, 167. 



Nova Scotia, 182. 



Ohio, 142-146. 



Pennsylvania, 147. 



South Dakota, 176. 



Vermont, 154, 181. 



Wisconsin, 118, 123. 



254, 

 314, 



303, 



303, 



149, 

 314, 



185, 

 329, 



S*\ 



Potamogeton, 25-27, 39, 56, 66, 67, 81, 87, 



91,94,101,108,332,336,378. 

 Potamogeton natans, 178, 184, 378. 

 Potamogeton pectinatus, 178, 184, 378. 

 Potamogeton perfoliatus, 178, 184, 378. 

 Potamogeton pusillus, 178, 184, 378. 

 Potamogeton rutilus, 178, 184, 378. 

 Potentilla anserina, 178, 185, 381. 

 Potentilla canadensis, 178, 185, 381. 

 Potentilla monspeliensis norvegica, 178, 185, 



381. 

 Potentilla tridentata, 178, 185, 381. 

 Pratt, 124, 125, 248, 250, 288. 

 Preglacial conditions, 197, 199. 

 Preglacial deposits. 



Iowa, 210. 



Kansas, 209. 



Nebraska, 209. 



New Jersey, 203-205, 207. 



Pennsylvania, 207. 

 Preglacial drainages, 197, 199, 200. 

 Preglacial fauna, 376. 

 Preglacial land elevation, 198. 

 Prime, 170. 

 Procyon lotor, 374. 

 Procyon priscus, 354, 360, 398. 

 Proptera alata, 29, 42, 71, 82, 98, 101, 186, 



193, 383. 

 Proptera purpurata, 273, 280, 383. 

 Prunus, 207, 211, 329, 336, 381. 

 Prunus pennsylvanica, 332, 336, 381. 

 Prunus maratima, 14. 

 Prunus virginiana, 170, 185, 381. 

 Psedera quinquefolia, 211, 381. 

 Pseudosuccinea columella, 81, 99, 145, 149, 



188, 264, 281, 350, 358, 387. 

 Pseudosuccinea columella chalybea, 99. 

 Pullman, 111., 80. 



Punctum pygmaeum, 144, 189, 308, 339, 389. 

 Pupilla blandi, 252-257, 259, 281, 288, 339, 



348, 358, 361, 362, 388. 

 Pupilla decora, 353, 358, 362, 388. 

 Pupilla muscorum, 252-257, 282, 287, 288, 



297, 339, 347, 348, 352, 353, 358, 361, 



362, 388. 

 Pupoides marginatus, 144, 189, 303, 307, 339, 



388. 

 Pterostichus abrogatus, 331, 391. 

 Pterostichus depletus, 331, 340, 391. 

 Pterostichus destitutus, 331, 391. 

 Pterostichus destructus, 331, 339, 391. 



