Pelecypoda, xxv., xxvi., 64. 
Pharus, xxxi., 92. 
legumen, 92 
Phasianella, xxi., 56. 
bulimoides, XX1. 
pulla, xxi., 56. 
Philenc, 30. 
aperta, xiil., 30. 
eatena, 30. 
punctata, xiii., 30. 
scrabra, 50. 
Philinide, xiii, 30. 
Pholadacea, xxvii., xxxi. 
Pholadidea, xxxi., 93. 
papyracea, 93, 
Pholadida, xxxi., 92. 
Pholas, xxxi., 92. 
candida, 92. 
crispata, 93. 
dactylus, 92. 
hians, 92. 
parva, 92. 
var. quadrangula, 92. 
Physa, Xi., 
fontinalis, 25, 26. 
Physide, xi., 
Pilidium, xxiii. 
fulvum, xxii. 
Pinna, xxix., 70. 
pectinata, 70. 
rudis, 70. 
Pisidum, xxix., 72. 
amnicum, 72. 
fontanile, 72. 
var. Henslowiana, 72. 
», pulchella, 72. 
», cinerea, 72. 
nitidum, 72. 
roseum, 72. 
Planorbis, xi., 23. 
albus, 24 
carinatus, 24. 
complanatus, 24. 
contortus, 23. 
corneus. 25. 
glaber, 25. 
glabra, 25. 
marginatus, 24. 
nautileus 23. 
nitidus, 23. 
parvus, 25. 
spirorbis, 24. 
vortex, 24. 
106 
Pleurobranchida, xiii., 31. 
Pleurobranchus, xiii., 31. 
membranaceus, ol. 
Peroni, xiii. 
plumula, xvi, 31. 
var. alba, 31 
tuberculatus, x1., 31. 
Pleurotomariide, xxii. 
Polita, ix., 5. 
alliaria, 1 ix. 5 eb 
cellaria, 5. 
Drapernaudi, ix. 
glabra, ix. 
nitidula, ix., 6. 
pura, 1x., 5. 
radiatula, ix., 6. 
Polyplachophora, xxiv., 52. 
Pomatias, xix., 48. 
elegans, xix., 48. 
Pomatiasida, xix., 48. 
Poromya, xxxil. 
Poromyacea, xxxii. 
Poromyida, xxvi., xxxii. 
Propilidium, xxiii. 
ancyloide, xxili. 
Prosobranchiata, xiv., 
XXVlil,, 32. 
Psammobia, xxxi., 88. 
costulata, 88. 
Ferroensis, 88. 
telinella, 88. 
vespertina, 88. 
Psammobiide, xxvii., xxxi., 
88. 
Ptenoglossa, xx., 51. 
Ptychina, xxx., 75. 
flexuosa, 75. 
Pulmonata, viil., 2. 
