30 PULMONATA. 



peristome simple, obtuse, dextral margin subdilated in the middle. 

 Lon. 20, lat. 8 ; ap. Ion. 10, lat 3f mill. 



Achatina (Glandina) Tortillana, Pfr. in Proc. Zool. Soc. 1846, 32; 

 Mon. HelicAi. 2.91. 



Reeve, Conch. Icon. t. 15. f. 6G. 

 Hab. Tortilla, Centi-al America. 



43. Oleacina yucataxensis. 



Shell ovate-oblong, rather solid, longitudinally closely plicatu- 

 late, fiilvescent -hyaline ; spire elongate-conic, apex obtuse ; suture 

 smooth, marginate, denticulate ; ^vhorls six, convex, the last less 

 than four-ninths the length ; columella shghtly arched, abruptly 

 truncated near the base of the aperture ; aperture subrhombic 

 oval, pointed above ; peristome simple. Lon. 23, lat. 9i ; ap, 

 lon. 11, lat. 4imill. 



Achatina (Glandina) yucatanensis, P/V. Symb. iii. 92; Mon. Helic. 



ii. 291. 

 Hab. Yucatan. 



44. Oleacixa venusta. B.M. 



Shell ovate-turreted, thin, closely longitiulinally striated, pel- 

 lucid, rosy, ornamented with narrow whitish and brown longitu- 

 dinal sti'ipes (the brown vanishing from the middle of the last 

 whoi'l) ; spire turreted, rather acute ; sutiu-e margined ; whorls 

 seven, nearly level, the last shorter than the spire ; columella 

 nearly vertical, twisted, obliquely tnuicated at the base of the 

 elliptic-oblong aperture ; peristome simple, sometimes white- 

 margined. Lon. 18, lat. 7 ; ap. lon. 8, lat. 3 mill. 



Cochlicopa venusta, Pfr. Symb. i. 46. 

 Glandina venusta, Phil. Icon. i. 6. 133. t. 1. f. 9. 

 Achatina venusta, Pfr. Mon. Helic. ii. 291 ; Ic. n. 9''J . Bui. t. 38. 

 f. 23, 24. 



Reeve. Conch. Icon. t. 15. f. 63. 

 Achatina (Melia) venusta, Alb. 195. 

 Hab. Jamaica ; var. Demerara. 



45. Oleacina nemorexsis. 



Shell oblong, rather fusiform, thin, closely and longitiulinally 

 striated, silk-shining, jiellucid, fulvous rose-coloured, irregularly 

 marked with narrow, slightly arcuate chestnut streaks ; spire tur- 

 reted ; apex rather blunt ; suture imjiressed, slightly bordered ; 

 whorls seven, scarcely convex, the last forming a little more than 

 two-fifths of the total length ; columella perpenchcular, straight, 

 obliquely and nan-owly ti'uncated at its base ; aperture narrow, 



