28 OLE AGIN A. 



0. JAMAICENSFS, Pfeiffer. PI. 3, fig. 6. 



Finely costulate, shining, whitish, with occasional chestnut 

 strigations ; whorls 10, frequently varicose, the last becoming 

 smooth below the peripher}^, suture crenulate, submarginate. 



Length, 22 mill. 



Jamaica. 

 0. TRINITARIA, Gundl. PI. 3, fig. 13. 



Shell thin, pellucid, yellowish brown, irregularly sculptured 

 by impressed striae and occasional varices ; whorls 8, with mod- 

 erate suture. Length, 27 mill. 



Mountains near Trinidad, Cuba. 



0. GUNDLACHI, Pfeiffer. PI. 3, fig. 14. 



Thin, smooth, pallid corneous, indistinctly varicose ; whorls 7, 



suture lightly crenulated. Length, 15 mill. 



Letran, Cuba. 



Smaller than the preceding species, with more acute apex, the 

 varices indistinct, suture crenulated, the outer lip more rounded. 



0. STIGMATICA, Shuttle worth. PI. 3, fig. 18. 



Thin, obsoletely thinly striate, shining, corneous, with distant 

 longitudinal chestnut strigations ; whorls 7, suture very narrowly 

 margined and minutely crenulated ; outer lip chestnut-margined. 



Length, 14 mill. 



Cordova, State of Vera Cruz, Mexico. 



0. VENUSTA, Pfeiffer. PI. 3, fig. 16. 



Thin, pellucid, closely striate, rosy, with white and chestnut 

 longitudinal strigations; whorls 7, suture margined; columella 

 subvertical, twisted, lip sometimes white-margined within. 



Length, 18 mill. 



Jamaica. 

 The color is sometimes a uniform yellowish rose. 



0. NEMORENSIS, Adams. PI. 3, fig 15. 



Shell thin, shining, pellucid, closely longitudinally striate, 

 rose-orange, with irregular longitudinal chestnut strigations ; 

 whorls 7, suture submargined ; outer lip receding below the 

 middle. Length, 20 mill. 



Jamaica. 



