6 BULLETIN OF THE 



Family TORNATINID^. 



Genus TORNATINA A. Adams. 



Subgenus COLEOPHYSIS Fischer. 

 Coleophysis perplicatus DalL 



Subgenus CYLICHNELLA Gabb. 

 Cylichnella bideiitata Orbigny, 



Genus UTRICULUS Brown. 



Utriculus Mayoi Dall,* 



Utriculus Frielei Dall. 



Utriculua vortex Dall. 



Utriculus (vortex var. ?) domitus Dall. 



Utriculus pervius DalL* 



Subgenus RETUSA (Brown) Morch. 



Retusa ovata Jeffreys.* 

 Retusa obesiuscula Brugnone.* 



Genus VOLVULA A. Adams. 



Volvula acuta Orbigny. 

 Volvula oxytata Bush.* 

 Volvula Bushii Dall* 

 Volvula aspinosa DalL* 



Family SCAPHANDRID^. 



Genus SCAPHANDER Montfort. 



Scaphander punctostriatus Mighels, var. clavus Dall. 

 Scaphander Watsoni DalL 



Subgenus SABATIA Bellardi. 

 Sabatia bathymophila DalL 



Genus ATYS Montfort. 

 Atys Sanderson! Dall. 



Genus CYLICHNA LovtN. 

 Cylichna Verrillii Dall.* 



