INDEX TO GENERA AND SUBGENERA CON- 

 TAINED IN VOL. XVII. 



[The names of synonyms are distinguished by Italic type.] 



Achatina Lam., i. 

 Achatinus Montf., I. 

 Achatium Link, i, 3. 

 Ampulla Bolt, i, 3. 

 Archachatina Alb., 104. 

 Balfouria Crosse, 204. 

 Bocageia Gir., 182, 191. 

 Bulimus auct, 171, 192, 212. 

 Callistopepla Anc., 125. 

 Callistoplepa Anc., 125. 

 Ceras D. & P., 155. 

 Chersina Humph., i. 

 Chilonopsis F. de W., 171. 

 Clavator Marts., 192. 

 Cochlitoma Per., 76. 

 Columna Perry, 120. 

 Ganomidos d'Ailly, 125. 

 Homorus Alb., 130. 

 Leptocala Anc., 72. 



Leptocallista Pils., 75. 

 Obeliscus auct., 192. 

 Oncaea Gist, i, 71. 

 Pachyotus auct, 171. 

 Parachatina Bgt., I, 5. 

 Petitia Jouss., 72. 

 Petriola Dall, 216. 

 Pintoa Bgt., 24. 

 Pseudoglessula Bttg., 156. 

 Riebeckia Marts., 204. 

 Rumina Risso, 212. 

 Serpaea Bgt., i, 21. 

 Stenogyra auct., 204. 

 Subulina auct., 130. 

 Subulona Marts., 138. 

 Trichodina, Anc., 182, 216. 

 Tripachatina Bgt., 5. 

 Urceus Klein, i. 



(219) 



