45 



Genus II.— Cyprsea, L. 



CVPR.EA EUROP/EA, Mont. 



CvPR.'EA EUROP/EA, V. minor, Mar. 



Genus III.— Ovula, Bnig. 

 OvuLA Patula, Peiin. 



Order IV. PLEUROBRANCHIATA, Gray. 

 Family I.— BULLID/E, Clark. 



Genus I. — Cylichna, Lov. 



CyLICHNA acuminata, B7'llg. 



Cylichna nitidula, Lov. 

 Cylichna umbilicata, Mont. 



Cylichna umbilicata, v conulus, S. Wood. 

 Cylichna cylindracea, Peim. 



Cylichna cylindracea, v linearis, Jeff. 

 Cylichna alba, Bivwn. 



Genus II. — Utriculus, Broivn. 

 Utriculus mammillatus, Phil. 

 Utriculus truncatulus, Bnig. 



Utriculus truncatulus, v pellucida, Bro. 

 Utriculus obtusus, Mo7it. 



Utriculus obtusus, v Lajonkaireana, Bast. 



Utriculus obtusus, v semistriata, y^ 

 Utriculus ventrosus, Jeff. 

 Utriculus expansus, Jeff. 

 Utriculus hyalinus, Tiirt. 

 Utriculus globosus, Lov. 



Genus III — Acera, Mull. 

 Acera bullata, Mi'ill. 



Acera bullata, v nana, Jeff. 



Genus IV.— Actaeon, De Mont. 



ACT.EON TORNATILIS, L. 



Actaeon tornatilis, v subulata, .S'. Wood. 

 Actaeon tornatilis, v tenella, Lov. 

 Actaeon tornatilis, v buUaeformis, y^ 



