34 



47. Zonitoides nitidus Mull. Not common. 



48. Zonitoides arboreus Say. Very common ; some- 



what variable. 



49. Zonitoides intertextus Binn. Not common. 



50. Zonitoides ligerus Say. Common. The rather 



small variety also known from Pennsylvania 

 and Michigan. Comparatively large speci- 

 mens were collected at Stillwater. 



51. Zonitoides suppressus Say . Rather scarce. 



52. Zonitoides mu Itidentatus B'lnn. Rare: Goshen. 



53. Conulus fulvus Mull. Common. 



54. Conulus sterkii Dall. Rare; Goshen. This is the 



smallest of our land shells. 



55. Limax campestris Say. Common. 



56. Tebennohorus carolinensis Bosc. Rather common 



and decidely variable in the color markings. 



57. PallHera dorsalis Binn. Rather scarce. 



58. Succinea retusa Lea. (S. ovalis Gld.) Common 



and variable. 



59. Succinea? Rare. 



60. Succinea a vara Say. Common. Decidedly 



variable in size, and the color of the shell. 



61. Carychium exiguum Sa3-. Common. 



62. Carychium exik Ad. Common. Prefers dry, 



elevated situations. 



63. Limnaea columella Sa}-. Not rare. 



64. Limnaea pahistris Mull (elodes Say.) Common 



in some places. Most specimens have a 

 strong, rose-colored lip when mature. 

 Young, hatched in August, in a small 

 aquarium, were fully grown by midwinter. 



65. Limnaea desidiosa Say. Rather common, vari- 



able. Small, scalaroid specimens are found 

 occasionally. 



66. Limnaea humilis Sa}-. Common. 



67. Limnaea? Very rare. 



68. Planorbis trivolvis Say . Rather common 



69. Planorbis lentus Say. Scarce. Doubtfully dis- 



tinct from trivolvis. 



