32. Helix Newberryana, W. G. 



33. Helix Nickliniana, Lea. 



34. Helix pandorae, Forb. 



35. Helix ramentosa, Gld. 



36. Helix redemita, W. G. B. 



37. Helix reticulata, Pf. 



38. Helix sportella, Gld. 



39. Helix strigosa, Gld. 



40. Helix To'wnsendiana, Lea. 



41. Helix tudiculata, Binn. 



42. Helix vancouverensis, Lea. 



43. Bulimus californicus, Rve. 

 44 Bulimus chordatus, Pf. 



45. Bulimus excelsus, Gld. 



46. Bulimus Humboldti, Rve. 



47. Bulimus mexicanus, Lam. 



B. 



48. Bulimus pallidior, Sowb. 



49. Bulimus proteus, Brod. 



50. Bulimus sufHatus, Gld. 



51. Bulimus Ziegleri, Pf. 



52. Orthalicus zebra, Mull. 



53. Achatina californica, Pf. 



54. Pupa Rowellii, Newc. 



Ouchidiidae. 

 Onchidium Carpenteri, 



W.- G. B 



Auriciilidae. 

 Melampus olivaceus, Cjir. 

 Pedipes lirata, IF. G. B. 



Truncatellidae. 

 Truncatella californica, Pf. 



55 



56. 

 57. 



58. 



Section II.— EASTERN NORTH AMERICA. 



PUI.M01V0BRA1VCHIATA. 



Testacellidae. 



Glandina bullata, Gld. 

 Glandina corneola, W. G. B. 

 Glandina parallela, W. G. B. 

 Glandina texasiana, Pfr. 

 Glandina truncata, Gmel. 

 Glandina Vanuxemensis, Lea. 



Arionidae. 

 Arion empiricorum, Fer.? 

 Arion hortensis, Fer. 



Helicidae. 

 Tebennophorus carolinensis, 



Bosc. 

 Tebennophorus dorsalis, Binn. 

 Limax agrestis, Lin. 

 Limax campestris, Binn. 

 Limax flavus, Lin. 

 Vitrina angelicae. Beck. 

 Vitrina limpida, Gld. 

 Succinea aurea, Lea. 

 Succinea avara. Say. 

 Succinea avara, Say. 



var. major. 

 Succinea campestris. Say. 

 Succinea concordialis, Gld. 

 Succinea effusa, Shntt. 

 Succinea groenlandica. Beck. 

 Succinea Haydeni, W. G. B. 

 Succinea Haydeni, W. G. B. 



var. minor. 

 Succinea inflata. Lea. 

 Succinea lineata, W. G. B, 

 Succinea luteola, Gld. 



86. Succinea obliqua. Say. 



87. Succinea ovalis, Gld. non jSay. 



88. Succinea retusa. Lea. 



89. Succinea Salleana, Pf. 



90. Succinea Totteniana, Lea. 



91. Succinea vermeta. Say. 



92. Helix albolabris, Say. 



93. Helix albolabris. Say. 



var. dentata. 



94. Helix alternata, Say. 



95. Helix appressa. Say. 



96. Helix appressa, Say. 



var. a. 



97. Helix arborea. Say. 



98. Helix ariadnae, Pf. 



99. Helix aspersa, Mull. 



100. Helix asteriscus, Morse. 



101. Helix auriculata, Say. 



102. Helix auriformis. Bland. 



103. Helix avara. Say. 



104. Helix barbigera, Redf, 



105. Helix Berlandieriana, Mor. 



106. Helix bucculenta, Gld. 



107. Helix bucculenta, Gld. 



var. minor. 



108. Helix bulbina, Desk. 



109. Helix caduca, Pf. 



110. Helix capsella, Gld. 



111. Helix Carpenteriana, Bland. 



112. Helix cellaria. Mull. 



113. Helix cereolus, Muld. 



114. Helix chersina. Say. 



115. Helix Christyi, Bland. 



116. Helix Clarkii, Lea. 



