INDEX TO MOLLUSCA OF NEW YORK 



IO1 



Bullidae, 26'. 

 Bythinella, ig\ 



attenuata, ip 7 . 



obtusa, IQ S . 

 Bythinia, i8 T . 



tentaculata, i8 T . 

 Bythininae, i8 7 . 



Caecidae, n 5 . 



Caecum, n 6 . 



cooperi, n 6 . 



pulchellum, n 7 . 

 Calyculina, 72 s . 



partumeia, 73 2 , 73*. 



rosacea, 73". 



securis, 74 1 . 



transversa, 72 8 . 



truncata, 73 6 . 

 Calyptraeidae, Q 7 . 

 Calyptrea striata, Q 8 . 

 Campeloma, 23 T . 



decisa, 24 7 . 



decisum, 23 7 . 



ponderosum, 23 T . 

 Cardiidae, 78*. 

 Cardita borealis, 8o 3 . 

 Carditinae, 8o 2 . 

 Cardium, 78 1 . 



(Cerastoderma) ciliatum, 78 3 . 



groenlandicum, 78 7 . 



islandicum, 78 3 . 



(Laevicardium) mortoni, 78*, 78'. 



(Cerastoderma) pinnulatum, 78 1 , 



7 8 2 . 



Cavolina salmonacea, 27 s . 

 Cemoria noachina, 25 3 . 

 Cephalopoda, 3*. 



Cerastoderma ciliatum, see Cardium 

 (Cerastoderma) ciliatum. 



pinnulatum, see Cardium (Ceras- 

 toderma) pinnulatum. 

 Cerithiidae, I4 T . 

 Cerithiopsis, 14". 



emersoni, I5 1 . 



greeni, 14*. 



punctatum, I5 2 . 



terebellum, 15*. 



terebrale, 15*. 



Cerithium greenii, 14. 



nigrocinctum, i5 3 . 



sayi, 14*. 

 Chaetopleura, 63*. 



apiculata, 63 8 . 

 Chemnitzia bisuturalis, I3 3 . 



fusca, I3 7 . 



impressa, I3 5 . 



interrupta, 12 s . 



seminuda, I3 6 . 



trifida, I3 2 . 

 Chiton albus, 64 1 . 



apiculatus, 63". 

 Cingula aculeus, IQ 2 . 



laevis, 19*. 



minuta, IQ 2 . 



Cionella subcylindrica, 44 5 . 

 Circinaria, 41*. 



concava, 41*. 

 Clathurella, f. 



plicata, 7 9 . 

 Cochlicopa, 44 3 . 



lubrica, 44 3 , 44. 

 Cochlodesma, 66 7 . 



leana, 66 7 . 



leanum, 66 8 . 

 Columbella, 6 8 . 



avara, 6 s . 



gouldiana, 7 2 . 



lunata, 6 9 , f. 

 Columbellidae, 6 7 . 

 Conulus chersina, 3i 8 . 



fulvus, 3i 2 . 



minutissima, 32 T . 

 Corbula, 66 1 . 



contracta, 66 1 . 

 Corbulidae, 66 1 . 

 Crassatellidae, 7p 7 . 

 Crenella, 96'. 



decussatus, 96. 



grandula, 96", 96 7 . 

 Crenellinae, 96 5 . 

 Crepidula, 9. 



convexa, io z . 



fornicata, g 9 , ro 1 . 



glauca, io 5 . 



plana, io 3 . 



unguiformis, io*. 

 Crucibulum, 9*. 



striatum, 9*. 



