OFWESTCOASTMOLLUSCA. 31 



612 Tryonia clathrata Stp. 

 Colorado Desert, Cal. ; fossil only 1 



613 Tryonia protea Old. 

 Colorado Desert, Cal. ; fossil only 1 



614 Valvata virens Tryon. 

 Clear Lake, California. 



615 Truncatella Californica Pf. 



San Pedro to San Diego Mazatlan ? 



616 Jeffreysia Alderi Cpr. 



S. Diego Cape St. Lucas to Mazatlan. 



617 Jeffreysia translucens Cpr. 



S. Diego. (Barleeia or liissoa ?) 



618 Cythna albida Cpr. 



San Pedro Mazatlan 1 (=C. lumens Cpr ?) 



619 Diala marmorea Cpr. 



Monterey to San Pedro Cape St. Lucas. 



620 Diala acuta Cpr. 

 Monterey to Catalina I. 



621 Styliferina turrita Cpr. 



San Pedro; shell-washings. (Palmer coll.) 



622 Radius variabilis C. B. Ad. 



Santa Barbara 1 Lower Cal. to Panama. 



623 Luponia spadicea Sw. 



Santa Barbara to San Diego and islands. 



624 Trivia Californiana Gray. 

 Monterey to San Diego and islands. 



625 Trivia radians Lam. 



S. Pedro Lower Cal. to Peru. 



626 Trivia sanguinea Gray. 

 Catalina I. 60 f. Lower Cal. to Peru. 



627 Trivia Solandri Sby. 



Santa Barbara and S. Nicolas I. to Panama. 



628 Erato vitellina Hds. 



New Year Pt. to San Diego Margarita Bay. 



629 Erato columbella Mke. 

 Monterey to San Diego Mazatlan. 



630 Terebra specillata Hds. 



San Pedro Cerros Is. to San Bias, L. Cal, 



631 Myurella simplex Cpr. 

 Santa Barbara to San Diego. 



632 Drillia inermis Hds. 



Santa Barbara to San Diego Lower Cal. 



633 Drillia incisa Cpr. 



Str. Fuca, W. T., to Santa Cruz, Cal. 



