PULMONATA. 43 



convex, with a well-im])ressed suture ; aperture broadly ovate ; 

 labrum not advanced along the middle, much reflected in the 

 lower half; columella moderately produced, nearly straight, 

 well-truncated. Length 0'86, breadth 0-27 inch. {Adams.) 



Achatina costulosa, Jrfams, Contr. to Conch, n. /■ ])■ 102. 



Pfr. Hon. Suppl. 499. 

 Hab, Jamaica. 



82. Oleacina arcuata. 



Shell fusiform-turreted, rather thin, shining, with close and 

 slightly arched ribs, amber-yellow, adorned with narrow, remote, 

 arched, pale margined red stripes ; spire subulate, acute ; suture 

 crenulate; whorls nine, level, the last less than one-third the 

 length ; columella nearly straight, slightly truncated ; aperture 

 oblong; peristome simple. Lon. 13, lat. 3i; ap. Ion. 4^, lat. 2 

 mill. 

 Achatina arcuata (Glandina), Pfr. in Proc. Zool. Soc. 1845, 



p. 138; Mon. Helic. ii. 2()l. 

 Reeve, Conch. Icon. t. 17- f- i^3. 

 Hab. Jamaica, 



83. Oleacina Dunkeri. 



Shell turreted, rather thin, smooth, pellucid, shining, fulvous ; 

 spire elongate, with the apex blunt ; suture impressed, bordered, 

 obsoletely crenulated ; whorls nine, scarcely convex, the last 

 forming less than one-third of the total length ; columella arched, 

 truncated highly and almost vertically ; aperture semiovate, 

 somewhat triangular ; peristome simple, with the right margin 

 arcuately produced in the middle. Length 28, breadth 7i mill- 

 iPfr.) 

 Achatina Dunkeri, Pfr. in Proc. Zool. Soc. 1850, p. ; Ic. 



u. I^. Bui. t. 37. f. 25, 26 ; Mon. Suppl. 500. 



/3. Larger, chestnut-coloured, paler at the lower part. Length 

 38, breadth 8 mill.— P/r. Ic. Bui. t. 43. f. 5, 6. 



Hab. Haiti {Salle). 



84. Oleacina semitahum. 



Shell subulate, apex obtuse, pale horny, longitudinally sub- 

 striate, shining ; whorls ten, somewhat flattened, the last scarcely 

 exceeding one-fourth the length ; columella strongly arched, ob- 

 liquely truncated at the base of the apertui-e ; aperture oblong- 



