34 PULMONATA. 



front ; spii-e conic, rather acute ; suture crowned with strong 

 distant teeth ; whorls seven, very shghtly convex, the last less 

 than five-ninths the length ; columella strongly arched, abruptly 

 truncated at the base ; aperture obloug, semioval. Lon. 88, lat. 

 35 ; ap. lon. 52, lat. 20 mill. 



Achatina coronata, Pfr. in Zeitschr. f. Mai. 1846, 158; Mon. 



Helic. ii. 293; Ic. n. 77- Bui. t. 38. f. 1, 2. 

 Glandina, Alb. US. 

 Hub. Mexico. 



56. Oleacina lignaria. 



Shell oblong-cylindrical, light bro^vn bay, somewhat obscurely 

 and irregularly marked with streaks of a darker colour ; whorls 

 eight, scul])tured throughout with obloug granules, rudely cre- 

 nulated at the sutm-es ; columella abruptly truncated ; aperture 

 rather small. Length 94, breadth 32 mill. {Reeve.) 



Achatina lignaria. Reeve, Conch. Icon. n. 27. t. 8. 



Pfr. Man. Sujjjil. 517. 

 Locality unknown. 



57. Oleacina Liebmanni. 



Shell subfusifonn-oblong, solid, longitudinally phcated, the 

 interstices obsoletely decussated with close spiral lines, whitish ; 

 spire conic, rather obtuse ; suture elegantly crenulate ; whorls 

 eight, slightly convex, the last less than the spire ; columella 

 straightish, subvertical, abruptly truncated above the base of the 

 narrow semioval apertm-e. Lon. 67, lat. 26 ; ap. lon. 35, lat. 12 

 mill. 



Achatina Liebmanni, Pfr. in Zeitschr. f. Mai. 1846, 159; Mon. 



Helic. ii. 293 ; Ic. n. 5. Bui. t. 23. f. 4, 5. 

 Achatina striata, Reeve, Conch. Icon. n. 19. t. 6. 

 Glandina Liebmanni, Alb. 198. 

 Hab. Mexico. 



58. Oleacina plicatula. 



Shell oblong-fusiform, thin, scidjitured with crowded faint 

 longituihnal folds, obsoletely decussated with spiral striae, dia- 

 phanous, little shining, brownish flesh-coloured ; spire elongate 

 conic, with the apex blunt ; sutm-e bordered and minutely cre- 

 nulated ; whorls seven, scarcely convex, the last as long as the 

 spire, a little more convex, attenuated in front ; columella callous, 

 scarcely arched, abruptly truncated at the base of the aperture, 



