24 OLEACTNA. 



0. ORYSACEA, Rang. PL 27, fig. 2. 



Elongate, subcylindrical, pellucid, smooth, shining, orange- 

 brown, last whorl narrow, cylindrical, long. Length, 16-20 mill. 



Cuba. 



0. regularise Gundlach is a synonym. 



O. ASSIMILIS, Reeve. PL 4, fig. 40. 



Smooth, pellucid, very shining, reddish corneous ; whorls 5J, 

 suture margined. Length, 20 mill. 



Venezuela. 

 O. OBTUSA, Pfeiffer. PL 4, fig. 55. 



Smooth, pellucid, corneous ; whorls 5J, suture margined, obso- 

 letely crenulated. Length, 26 mill. 



Real Llejos, Nicaragua. 

 Very closely allied to the preceding species. 



0. SOLIDULA, Pfeiffer. PL 27, fig. 1 ; PL 4, fig. 49. 



Shining fulvous, subpellucid, whorls 6, suture submarginate. 



Length, 13 mill. 



Cuba ; New Providence, Bahamas, 



0. paragramma, Morelet, is a thinner variety, subhyaline, spire 

 slightly more acute ; 0. folliculus, Gould is another synonym. I 

 have copied a figure from Reeve (fig. 49) which differs consider, 

 ably .from the typical form. 



0. INCERTA, Reeve. PL 4, fig. 53. 



Shell livid corneous, smooth, shining; whorls 5-6, suture 

 slightly marginate. Length, 12 mill. 



Cuba. 



Differs from the preceding species by its shorter spire and 

 more ventricose base. 



O. SATURATA, Gundlach. PL 27, fig. 3. 



Fusiformly oblong, thin, glabrous, shining, pellucid, corneous 

 or orange-brown, spire short, obtuse, suture submarginate. 



Length, 11-3 mill. 



Cuba. 



Now first figured, from a specimen. 



0. SUBULATA, Pfeiffer. PL 4, fig. 54. 



Shell smooth, pellucid, orange-brown, with an opaque line 

 below the suture. Length, 12 mill. 



Cuba. 



