118 HEMIBULIMUS. 



the last two volutions close, and the tip papillary ; base nearly 

 entire. Distinct from, though approximating to, Bulinus 

 zebra and undatus," 



(Swainson, Catalogue of the rare and valuable shells which 

 formed the celebrated collection of the late Mrs. Bligh, Ap- 

 pendix, p. 14, 1822 ; Exotic Conchology, edit. 2, p. 38, 1841) . 



This seems to be some such shell as Oxystyla ferussaci, or 

 some of the forms represented on plate 17 of vol. XII ; yet the 

 "apex papillary" recalls Pseudotrochus (Perideris) . 



ACHATINA VENTRICOSA G. Fischer, Mus. Demidoff iii, p. 

 224 (l8Q7)=BuUmus v., Brug. See Vol. VIII, 10. 



ACHATINA ANTIQUA Desh., An. s. Vert. Bassin Paris ii, p. 

 839=Lacuna. 



ACHATINA DONELLII King. T. subalbida, transversim sub- 

 striata; anfractus basalis ventricosus. Long. V 16 , lat. %". 

 (King in Zool. Journ. V. p. 342; Pfr., Monogr. ii, 295.) 



Habitat prope Lima. 



