OLE AC IN A. 27 



O. SPECIOSA, Pfeiffer. PI. 3, fig. 11. 



Finely plicate, shining, corneous, with irregular distant sub- 

 flexuous white varices ; whorls 8, suture elegantly nodulous- 

 crenate. Length, 29 mill. 



Cordova, State of Vera Cruz, Mexico. 



0. PROCERA, Adams. PI. 3, fig. 9. 



Finely plicate, costate, shining, diaphanous, whitish, with 

 longitudinal wide irregular chestnut blotches, interrupted on 

 the last whorl about the periphery ; whorls 10, suture well 



impressed. Length, 30 mill. 



Jamaica. 

 Figured from an authentic specimen. 



0. PHILIPPIANA, Pfeiffer. PL 3, fig. 10. 



Narrowly costulate, rather thin, shining, grayish orange, with 

 wide chestnut irregular strigations ; whorls 9, irregularly vari- 

 cose, suture impressed, submarginate. Length, 29 mill. 



Jamaica. 



Var. ELEGANS, Adams. Costulae finer, strigations narrower. 



O. GRIFFITHSI, Adams. PL 3, fig. 8. 



Finely costulate, yellowish, corneous, sparsely strigate with 

 chestnut; whorls 10, the last impressed in the middle, outer lip 

 dilated towards the base, somewhat thickened within, whitish. 



Length, 22 mill. 



Jamaica. 

 O. LIGATA, Adams. PL 3, fig. 7. 



Longitudinally closely striate, shining, orange-brown, with 

 distant irregular chestnut strigations, suture impressed, whorls 

 8, varicose, the last sulcately constricted in the middle. 



Length, 17 mill. 



Jamaica. 

 0. DENTICULATA, Weinland. PL 11, fig. 99. 



Shell thin, pellucid, milky hyaline, with impressed arcuate 

 stride; whorls 7, suture simple; outer lip compressed in the 

 middle, where it is furnished with a small tooth. 



Length, 17 mill. 



Port au Prince, Haiti. 



