44 PULMOXATA. 



acuminate, wide at the base ; peristome simple, dextral margin 

 rather arched in front. Lon. 28, hit. 6^; ap. Ion. 7, lat. 4 mill. 



Helix semitarum. Rang in Mus. Paris. 

 Achatina semitarum, Jay, Caial. 



Pfr. Symb. n. 59 ; Mon. Helic. ii. 263 ; Ic. n. 59. Bui. t. 28. 



f. 10, 11 {Zeitschr.f. Mai. 1852, p. 110). 

 Reeve, Conch. Icon. t. 16. f. 73. 

 Achatina octona, Turt. Man. f. J'^l 



Gray, Man. 18. t. 6. f. 72? 

 Hab. Antilles. 



Compare Bui. terehraster, Lam. 



85. Oleacina Gossei. 



Shell subulate, thin, diaphanous, waxy, remotely ribbed, ver\' 

 finely striated between the ribs on the lower whorls, becoming 

 obsolete downwards; whorls nine to ten, slightly convex, the 

 last scarcely exceeding one-fourth the length ; columella oblique, 

 reaching the base of the aperture, slightly truncated ; aperture 

 narrow, oblong ; peristome simple, dextral margin dilated down- 

 wards. Lou. 12, lat. 2f ; ap. lon. 3|, lat. 1^ mdl. 



Achatina Gossei, iyr. irt Proc. Zool. Soc. 1845, p. 138; Mon. 

 Helic. ii. 26/. 



Reeve, Conch. Icon. t. 20. f. 114. 



Hab. Jamaica, 



86. Oleacina pellucens. 



Shell subulate, thin, rather closely sculptm'cd mth minute 

 ribs, translucent, pale brownish; spire elongate, with the apex 

 rather blunt ; whorls seven, flat, the last forming less than one- 

 third of the total length ; columella almost rectilinear, very nar- 

 rowly truncated ; aperture ovate-angular; peristome simple, 

 with the lower part of its risjht margin retreating. Length 6i, 

 breadth If mill. {Pfr.) 



Achatina pellucens, Adams in Proc. Bost. Soc. 1845, p. 13. 

 Pfr. Mon. Helic. U. 295. 



Hab. Jamaica. 



87. Oleacina l^vis. 



Shell much elongated, conic, very pale brown, shining, very 

 thin, smooth, with microscopic transverse striae, which are quite 

 numerous on the u])per whorls ; spii'c with rectihnear outlines; 

 apex not very small ; whorls seven, a little convex, with a mode- 



