112 



NEW YORK STATE MUSEUM 



Vertigo tridentata, 42". 



ventricosa, 43 1 . 

 Vitrea, 28*. 



binneyana, 29*. 



cellaria, 28*. 



ferrea, 2p 3 . 



hammonis, 28 T . 



indentata, 29*, 2Q 7 . 

 Vitrina, 27". 



limpida, 27*. 

 Vitrinidae, 27*. 

 Vivipara, 23*. 



contectoides, 23*. 



Xolotrema appressa, 38*. 

 elevata, 38". 

 palliata, 38 1 . 



Yoldia, 94 T . 

 gouldi, 94 8 . 

 limatula, 94 7 . 

 sapotilla, 95*. 



Zirfaea, 6. 



crispata, 64 T . 

 Zonites arborea, 30*. 



arboreus, 30*. 



chersina, 31*. 



Zonites fuliginosa, 27 9 , 28 1 . 



fuligindsus, 28 1 . 



indentata, 29 7 . 



indentatus, 29. 



inornata, 28 s . 



inornatus, 28*. 



intertexta, 3i 7 . 



intertextus, 3i 6 . 



ligerus, 3i 9 . 



limatulus, 30". 



minuscula, 30*. 



minusculus, 3O 8 . 



multidentata, 32". 



multidentatus, 32. 



nitida, 29 9 . 



nitidus, 29'. 



suppressa, 32*. 



viridula, 29*. 



viridulus, 28 9 . 

 Zonitidae, 27 7 . 

 Zonitoides, 29 7 . 



arboreus, 30*. 



exiguus, 30. 



limatulus, 30". 



milium, 3I 1 . 



minusculus, 30*. 



nitidus, 29 T . 

 Zoogenites harpa, 34 T . 

 Zua subcylindrica, 44*. 



