University of Washington Publications in Geology [Vol. I 



Occurrence. At locality 320 (University of Washington Palaeontological 

 Collection) on the south bank of Stillwater Creek, below the graveyard, about 

 one and one-fourth miles from Vader, Lewis County, Section 30, Township 11 

 North, Range 2 West. 



GENUS POLINICES MONTFORT 

 POLINICES HOTSONI n. Sp. 



Plate IX, Figures 14, 15 



Description. Shell large; spire short; suture distinct and appressed; whorls 

 four in number ; upper surfaces of the whorls slightly rounded to nearly straight ; 

 smooth except for lines of growth ; body whorl very much elongated ; callus thick, 

 sometimes nearly covering the umbilical opening; umbilicus narrow and deep; 

 aperture oblong. 



This species is characterized by having the body whorl strikingly elevated 

 with an elongate rather narrow aperture. 



Named in honor of Professor Hotson of the Botany Department, University 

 of Washington. 



Dimensions. Altitude 25 mm.; width of body whorl 20 mm.; apical angle 

 97. 



Occurrence. At locality 370 (University of Washington Palaeontological 

 Collection), Scattagrece Falls, Cowlitz County, Southeast quarter Section 18, 

 Township 9 North, Range 2 West. 



GENUS SINUM BOI/TEN 



SlNUM OCCIDEJNTIS n. Sp. 



Plate XI, Figures 8, 26 



cf. Naticina obliqua Dickerson, 1915, Cal. Acad. Sci., Fourth Series, vol. V, No. 3, 

 pi. 5, fig. 5a, b. Not Naticina obliqua Gabb 1864. 



Description. Shell large, depressed, body whorl spreading, spire low ; suture 

 appressed; aperture distended; whorls three, sculptured by numerous, spiral 

 striae of equal prominence ; interspaces about equal to the width of the striae ; 

 basal portion of the body whorl smooth except for the lines of growth crowding 

 at the umbilical area; umbilicus slight. 



