644 
Polyzoa, 575, 577, 580, 585, 592. 
Pomacea, 89, 91, 167, 169, 170, 171, 173, 
174, 535, 536. 
Pomatiaside, 97, 484. 
Pomella, 167, 169. 
pompholyx, Thapsia, 492. 
Pomus, 170, 172. 
ponderosa, Mutela angustata var., 428. 
Mutela dubia var., 428. 
Ponsonbya, 308, 309. — 
ponsonbyi, Assiminea, 242. 
Burnupia, 152. 
Gonyodiscus, 419. 
Horea, 336. 
Lechaptoisia, 336 (Fig. 70), 590. 
Rissoa, 336. 
Syncera, 242. 
ponthiervillensis, Melania, 284, 285. 
Potadoma, 272 (Fig. 45), 273, 275, 
276, 284, 285, 286, 541, 569. PI. 
XXV, figs. 1-1f. 
Pontonia, 2, 7, 8, 20, 23, 40. 
Pontoniine, 40. 
Porifera, 585. 
postumus, Unio, 382. 
Potadoma, 70, 75, 248, 250, 266, 272, 
274 (Map 38), 528, 541, 546, 550, 
506, 561, 566, 568, 569, 570, 573, 
576, 600. 
Potadomide, 248. 
Potadomine, 70, 248, 272, 600. 
Potamias, 531. 
Potamides, 54, 70, 245, 266, 562, 565, 
566, 568. 
Potamidine, 245. 
Potamis, 245. 
Potamogale, 3. 
Potamolithus, 224. 
Potamon, 91, 556. 
Potamonide, 4. 
Potamophala, 359, 360, 362, 363. 
Potamopyrgus, 218, 221, 222, 446. 
poutrini, Cleopatra, 292: 
preclara, Baizea, 309, 311, 312, 589. 
Giraudia, 309, 311. 
Physopsis, 144. 
Reymondia, 311. 
premorsa, Melanopsis, 522. 
INDEX 
pretenuis, Mutela garambe, 75, 429, 
432, 569. Pl. XL, fig. 3. 
Praxis, 455. 
princei, Geocichla, 478. 
princeps, Truncatella, 241. 
prinsepil, Physa, 132. 
Prionodesmacea, 71, 336, 377. 
priscus, Pleiodon, 599. 
Prisodon, 409. 
problematicus, Planorbis adowensis var., 
116. 
Proboscidea, 599. 
procera, Vossia, 571. 
procerus, Lanistes, 74, 168 (Fig. 138c), 
183, 184, 185, 195, 196, 197, 198, 
201, 537, 541, 544, 568. 
Lanistes olivaceus var., 197, 198. 
Meladomus olwaceus var., 197. 
Procos, 369. 
Profischeria, 369, 370. 
proglottina, Davainea, 88. 
Prosobranchiata, 98. 
Prososthenia, 227. 
Protancylus, 132. 
protchei, Aspatharia, 414, 415 (Fig. 
91), 417, 560, 569. Pl. XXXIV, 
figs. 1-3a. 
Spatha, 415. 
Spathella, 415. 
Protea, 495. 
protea, Paludestrina, 522. 
Protozoa, 472, 575, 585. 
prunert, Nodularia nilotica var., 385. 
Nodularia parreyssi var., 385. 
psammobialis, Iphigenia, 371. 
Pseudachatina, 482. 
Pseudancyline, 69, 155. 
Pseudancylus, 148, 151, 155. 
Pseudavicula, 71, 382, 408, 597, 598. 
Pseudeupera, 350. 
Pseudocorbicula, 346, 358, 574. 
Pseudogibbula, 70, 248, 546, 553, o61, 
568, 593. 
Pseudoglessula, 476, 490, 492, 493, 499, 
500, 508, 506, 512, 513, 515, 517, 
601, 602. 
Pseudomelampus, 99. 
Pseudomulleria, 447. 
