PULMONATA. 46 



rately impressed suture ; aperture ovate, acute above ; labrum 

 thin and sharp ; columella slightly arcuate. Length 0'42, 

 breadth 0"i inch. {Adams.) 



Achatina laevis, Adams, Contrib. to Conch, n. 2. p. 26. 

 Pfr. Mon. Suppl. 502. 



Hab. Jamaica. 



This may be only a variety of 0. pellucens ; but that shell 

 has more numerous striae (Adams). 



88. OlEACINA LONGISPIRA. 



Shell much elongated, conoidal, pale brown, shining, w4th 

 very lightly impressed, not very numerous transverse striae ; apex 

 obtuse ; outlines of the spire slightly cm-vilinear ; whorls ten, 

 moderately convex, with a well-impressed suture ; aperture sub- 

 rhomboidal, subacute above ; labrum thin, shghtly advanced in 

 the upper half, retreating below ; columella very oblique, di- 

 stinctly truncated. Length 0'45, breadth 0'09 inch. (Adams.) 



Achatina longispna, Adams, Contrib. to Conch, n. 7- p- 104. 



Pfr. Mon. Suppl. 503. 

 Hab. Jamaica. 



89. Oleacina gracilior. 



Shell conoidal, but very slender, pale horn-coloured, with 

 about twelve transverse oblique slightly prominent lamelloid 

 ridges, which are more distinct next below the suture ; apex 

 rather acute ; spire with the outlines nearly rectilinear ; whorls 

 eleven, a little convex, with a distinct suture ; aperture ovate, 

 very acute above, retreating below on both sides, but less on the 

 left side ; labrum thin ; columella moderately arcuated and trun- 

 cated. Length 0'55, breadth 00.9 inch. (Adams.) 



Achatina gracihor, Adams, Contrib. to Conch, n. 7- p- 104. 

 Pfr. Mon. Suppl. 503. 



Hab. Jamaica. 



90. Oleacina osculans. 



Shell conoidal, but very slender, dull horn-coloured, with about 

 fourteen transverse oblique rather prominent lamelloid ridges, 

 which are somewhat arcuated with the convexity forwards ; apex 

 rather obtuse; spire with the outlines rectihnear, except near 

 the apex ; whorls nine, flattened or concave along the middle, 

 v\ ith a well-impressed suture ; aperture ovate, very narrow and 



