FLUMINICOLA. 65 



Genus FLUMINICOLA, Stimpson. 



1. FLUMINICOLA NUTTALLIANA, Lea. 



Plate 17, fig. 17. 



Shell globosely turbinate, thick, whorls four 

 (apex eroded generally), convex, sutures well 

 impressed; aperture large, widely ovate. 

 Greenish, aperture blue within. 



Alt. 10, diam. 8'3 mill. 



British Columbia to Sacramento River, Cali- 

 fornia. 



2. FLUMINICOLA VIRENS, Lea. 

 Plate 17, fig. 18. 



- Shell oval, thick, apex eroded, whorls about 

 four and a half or five, moderately convex ; 

 aperture narrow-ovate. Bright green, bluish 

 within. 



Alt. 10, diam. 6 mill. 



Oregon. 



(46) 



