INDEX TO MOLLUSCA OF NEW YORK 



Helicidae, 33*. 

 Helicodiscus, 34 s . 



lineatus, 34 s , 35 1 . 

 Helisoma trivolvis, 59 s . 

 Helix, 4 i\ 



albolabris, 36 s . 



alternata, 33 s . 



appressa, 38*. 



arborea, 30 1 . 



binneyana, 29 2 . 



caroliniensis, 37'. 



cellaria, 28 s . 



chersina, 31 3 . 



clausa, 39*. 



concava, 41 1 . 



dentifera, 37 T . 



diodonta, 36*. 



electrina, 28 T . 



elevata, 38 6 . 



exoleta, 37 a . 



fallax, 35 7 . 



fraterna, 40 3 . 



fuliginosa, 27 s . 



fulva, 31 2 . 



hirsuta, 39°. 



hortensis, 41 5 . 



indentata, 29*. 



inflecta, 36 1 . 



inornata, 28*. 



intertexta, 31 5 . 



labyrinthica, 46*. 



ligera, 31 8 . 



lineata, 34*. 



minuta, 40 5 . 



minutissima, 32 s . 



monodon, 39 s , 40 1 . 



multidentata, 32*. 



multilineata, 37 s . 



oval is, 49 s . 



palliata, 37', 38 1 . 



pennsylvanica, 38 T . 



perspectiva, 34*. 



profunda, 36*. 



pulchella, 40 8 . 



radiata, 33°. 



rufa, 36 8 . 



sayii, 36 s . 



scabra, 33°. 

 solitaria, 34'. 



Helix striatella, 33 s , 34 1 . 



subglobosa, 41 s . 



suppressa, 32 1 . 



thyroides, 38 s , 39*. 



thyroidus, 38 s , 39 1 . 



tridentata, 35 s . 



viridula, 28 s . 



zaleta, 2if- 

 Hemilastena, 91 9 . 



ambigua, 91 9 . 

 Homomyaria, 80*. 

 Hyalina arborea, 30 2 . 



cellaria, 28 s . 



electrina, 28 s . 



exigua, 30 9 . 



ferrea, 29 s . 



fuliginosa, 27 s . 



indentata, 29 s . 



inornata, 28". 



intertexta, 31 6 . 



ligera, 31 9 . 



limatula, 30 5 . 



lineata, 34*. 



minuscula, 30 7 . 



multidentata, 32 s . 



nitida, 29 s . 



viridula, 28 s . 

 Hydrobia laevis, 19 5 . 

 Hydrobiinae, I9 T . 

 Hygrophila, 51 7 . 



Ianthina, ir. 



fragilis, n 2 . 

 Ianthinidae, n 3 . 

 Integripalliata, 70*. 

 Ischnochiton albus, 64 2 . 

 Ischnochitonidae, 63 s . 

 Isodora integra, 58 s . 

 Isognomostoma inflecta, 

 Isthmia bollesiana, 43 7 . 



gouldii, 43 5 . 



milium, 44 s . 



ovata, 42 s . 



simplex, 33 s . 



ventricosa, 43 s . 



Kellia, 79*. 

 planulata, 79*. 



