362 Index 
Plumatella, 151, 165, 170, 181, 182, 
188, 282, 296, 322. 
Poddygut Bay, 53, 54, 55. 
Poddygut Point, 53, 54, 55. 
Peecilichthys, 191. 
Polycentropid, 88, 89, 307. 
Polycentropus, 101. 
Polygyra, 286, 296. 
Polygyra albolabris, 200. 
Polygyra sayana, 200. 
Polygyra thyroides, 82, 200, 286, 
287. 
Polygyra tridentata, 200. 
Polyphemus pediculus, 299, 300. 
Polyphemid, 300. 
Pomobolus chrysocharis, 222. 
Pomoxis annularis, 222, 225. 
Pomoxis sparoides, 222. 
Pond-lily, white, see Lily. 
Pond-lily, yellow, see Lily. 
Pond-snail, Lillians, 228. 
Pond-snails, 158, 230, 239, 246. 
Pond-weed, 37, 108, 268, 276. 
Pond-weed, clasping-leaved, 39, 44, 
50, 51, 54, 65, 68, 86, 88, 89, 99, 
100, 102, 292. 
Pond-weed, floating, 37, 39, 44, 45, 
48, 50, 51, 53, 65, 68, 84, 96, 99, 
102, 189, 284, 292. 
Pond-weed, various-leaved, 88, 89, 
99, 292. 
Pontederia, 125. 
Pontederia cordata, 34, 38, 39, 40, 
42, 43, 45, 48, 49, 50, 53, 61, 64, 
65, 66, 68, 73, 76, 77, 81, 91, 94, 
96-99 104 US V4 26%, 273; 
277, 279, 280, 282, 285, 294. 
Pontederiacex, 294. 
Pontoporeia hoyi, 160. 
Porifera, 295. 
Potamogeton, 129, 130, 144, 148, 
149, 279. 
Potamogeton americanus, 144, 
276. 
Potamogeton  amplifolius, 144, 
276. 
Potamogeton heterophyllus, 88, 89, 
99, 293. 
Potamogeton natans, 34, 37, 39, 
40, 43, 44, 45, 48, 49, 50, 51, 53, 
55, 65, 68, 84, 96, 99, 102, 104, 
130, 139, 141, 282, 284, 292, 307. 
Potamogeton perfoliatus, 39, 44, 
50, 51, 54, 65, 68, 86, 88, 89, 99, 
100, 102, 292, 
Prosobranchiata, 252, 264 
Protococcus, 147. 
Protophyta, 313, 316. 
Protozoa, 173, 210, 238, 242, 295, 
316, 323. 
Psephenus lecontei, 58, 75, 83, 93, 
95, 102, 309, 
Pseudosuccinea, 129, 131, 249, 283. 
Pseudosuccinea columella, 39, 44, 
51, 99, 102, 107, 130, 139,. 141, 
148-150, 217, 271, 283, 287. 
Pseudosuccinea columella chaly- 
bea, 39, 99, 107, 130, 136, 139, 
TP Zl 2835 28K 
Pulmonata, 272. 
Pumpkinseed, 184, 201-205, 211— 
215, 217, 222; 259; 260; 2635 267— 
2695 271, 278, 279, 280; 2206s 
299) 1302, 306, SIN; Sills. ocle 
Putorius vison, 237, 246. 
Pyralide, 307. 
Pyramidula alternata, 200. 
QUADRULA PLICATUS, 236. 
Quillback, 164, 212. 
Rana, 178, 179. 
Rana catesbiana, 228, 246. 
Rana palustris, 229, 246. 
Rana pipiens, 228, 246. 
Rana temporaria, 242. 
Ranatra, 305. 
Raphidium, 147. 
Rauschenplat, 119. 
Red-eye, 181. 
Red horse, common, 167, 211-213, 
259, 264, 265, 267, 271, 273, 281, 
302. 
Red horse, short-headed, 169, 211— 
213, 264. 
Reighard, J. E., 114, 166, 181, 184, 
191, 196; 291,292) 318: 
Reighard, Paul, 161. 
Reproduction of Unio, long-period, 
22/1: 
Reproduction 
riod, 221. 
of Unio, short-pe- 
