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NEW YORK STATE MUSEUM 



Planorbis lentus, 59 , 60 1 . 



megastoma, 59 s . 



obliquus, 60 9 . 



parvus, 61 7 , 62 1 . 



trivolvis, 59*. 

 lentns, 59 s . 

 Planorbula armigera, 62*. 

 Pleurocera, 15*. 



elevatum, 16 8 . 



intensum, 15 9 . 



pallidum, 16 1 . 



subulare, 15 5 . 

 intensum, 15 9 . 

 Pleurotoma bicarinata, 7 5 . 



bicarinatum, 7*. 



cerinum, 8 3 . 



decussata, f. 



plicata, 7 9 . 

 Podopthalma, 24 s . 

 Polygyra, 35'. 



albolabris, 36 s . 

 dentata, 37 1 . 



appressa, 38". 



clausa, 39 4 . 



dentifera, 37 7 . 



elevata, 38 s . 



exoleta, 37 s . 



fraudulenta, 35 7 . 



hirsuta, 39 s . 



inflecta, 35 s , 36 1 . 



juxtidens, 35*. 



leai, 40 4 . 



monodon, 39", 40 8 . 



fraterna, 40 3 . 

 multilineata, 37 s . 

 palliata, zf, 38 s . 

 pennsylvanica, 38\ 

 profunda, 36 2 . 

 sayi, 36 s . 



thyroides, 38 s , 39*. 



tridentata, 35 s . 

 juxtidens, 35®. 

 Polyplacophora, 63 s . 

 Pomatiopsinae, 22*. 

 Pomatiopsis, 22 s . 



lapidaria, 22". 



lustrica, 21 5 . 

 Psammobia fusca, 68 5 . 

 Pseudohyalina limatula, 30 5 . 



minuscula, 30*. 



Ptychobranchus, 85*. 



phaseolus, 85'. 

 Pulmonata, 27*. 

 Punctum, 32 7 . 



minutissimum, 32*. 



pygmaeum, 32 7 . 

 Puncturella, 25 s . 



noachina, 25 s . 

 Pupa, 42 1 . 



armifera, 45 s , 46 1 . 



badia, 42 1 . 



contracta, 45*. 



corticaria, 44 7 . 



fallax, 41 7 . 



gouldii, 43 4 . 



milium, 43°, 44 s . 



modesta, 43 s . 



muscorum, 42 1 . 



ovata, 42 s . 



pentodon, 46 s . 



rupicola, 45 s . 



simplex, 33 1 . 

 Pupidae, 41 6 . 

 Pupilla badia, 42*. 



muscorum, 42 s . 



pentodon, 46 s . 

 Pupoides, 41 8 . 



marginatus, 41 7 . 

 Purpura, 4". 



bizonalis, 4 7 . 



imbricata, 4 7 . 



lapillus, 4 6 . 

 Purpurinae, 4*. 

 Pyramidula, 33*. 



alternata, 33*. 



perspectiva, 34 s . 



solitaria, 34 2 - 



striatella, 33 s , 34 s . 

 Pyrula, aruana, 5*. 



canaliculata, S 5 . 



carica, 5 7 . 



Quadrula, 93 s . 

 coccinea, 94 1 . 



paupercula, 94*. 

 lachrymosa, 93°. 

 plicata hippopaea, 

 pustulosa, 93". 

 rubiginosa, 93 T . 

 solida, 94*. 



