230 
Tafel 39. 
1. Pachylabra dalyi Blfd. p. 80. — 2. P. nigricans Sow. p. 70. — 3. 4. P. perakensis 
Morg. p. 91. — 5. 6. P. wellesleyensis Morgan p. 91. — 7. 8. pilula Rve p. 92. 
Tafel 40. 
1—5. Pachylabra conica Gray p. 93. — 6. P. paludinoides Rve. p. 102. — 7. P. turbi- 
noides Rve. p. 95. — 8. 9. P. occidentalis Phii. p. 51. 
Tafel 41. 
1. Pachylabra encaustica Rve. p. 95. — 2. P. bilineata Rve. p. 96. — 3. P. vittata Rve. 
p. 59. — 4—7. P. lubrica mainitensis n. p. 97. — 8. 9. P. qnadrasi n. p. 99. 
Tafel 42. 
1. 2. Pachylabra tischbeini Dohrn p. 100. — 3—9. P. compacta Rve. p. 100. — 10. 11. 
P. dira Rve. p. 70. 
Tafel 43. 
1. Pachylabra cinerea Rve. p. 89. — 2. 3. P. paludinoides Rve. p. 102. — 4. P. glo- 
bosa spbaerica Rve. p. 227. — 5. P. complicata Rve. p. 103. — 6. P. labiosa Rve. p. 103. — 
7. P. callistoma Morl. p. 104. — 8. P. alucinans Sow. p. 104. — 9. P. woodwardi Dohrn 
p. 105. 
Tafel 44. 
1. Ampullaria dysoni Hanley p. 110. — 2. 3. A. paludosa Say p. 111. — 4. 5. A. stre- 
beli Crosse p. 113. — 6. 7. A. porphyrostoma Rve. p. 115. 
Tafel 45. 
1 — 8. Ampullaria reflexa Swains. p. 116. 
Tafel 46. 
1. Ampullaria livescens Rve. p. 118. — 2. A. venetus Rve. p. 119. — 3. A. hondu- 
rasensis Rve. p. 120. — 4. A. hopetonensis Lea p. 121. — 5. A. porphyrostoma Rve. p. 115. 
— 6. A. flatilis Rve. p. 122. — 7. A. hondurasensis Rve. p. 120. — 8. 9. A. fumata Rve. 
p. 122. 
Tafel 47. 
1. Ampullaria malleata Jonas p. 123. — 2. A. tristrami Mrts. p. 128. — 3. — 7. A. mal- 
leata Jonas p. 123. 
Tafel 48. 
1—3. Ampullaria flagellata Say p. 125. — 4. A. exsculpta Martens p. 129. — 5—7. A. 
arata Crosse & Fischer p. 129. — 8. 9. A. conoidea Martens p. 130. 
Tafel 49. 
1 — 3. Ampullaria flagellata Say p. 125. — 4 — 6. A. exsculpta Crosse & Fischer p. 129. 
