38 University of Washington Publications in Geology [Vol. I 



The striations in crescentensis are uniform in size and arranged in an overlapping 

 manner which is distinctive. Figures 23, 27, plate XI are given of G. tri-tuber- 

 culata* for comparison. 



Dimensions. Altitude 16 mm.; width of body whorl 11 mm.; apical angle 

 87. 



Occurrence. At locality 358 (University of Washington Palaeontological 

 Collection) at Joice station , one-fourth of a mile east of Tongue Point Railroad, 

 Port Crescent, Clallam County, Section 22, Township 31 North, T? 8 West. 



GENUS COMINELLA GRAY 



COMINEU,A EOCENIA (Weaver) 



Plate XII, Figures 5, 6 



Nassa eocenica Weaver, 1912, Bull. 15, Wash. Geol. Sur., p. 42, pi. Ill, f. 32. 



Amphissa eocenica Dickerson, 1915, Proc. Cal. Acad. of Sci., Fourth Series, vol. 

 5, No. 3, pi. 8, f . 6 a, b, c. 



Original Description. "Shell small and fusiform: spire moderately high; whorls eight 

 and convex, last two on apex smooth, rounded and without ornamentation ; upper portion 

 of each whorl surrounded by a deep depression, above which a low collar extends upward to 

 the^ suture; suture distinct. Surface of shell ornamented by eighteen longitudinal ribs which 

 are very distinct on the spire but faint on the body whorls; they begin at the s/uture and 

 extend the length of the whorls with the exception of the body whorl where they disappear 

 a short distance below the convex; portion ; body whorl sculptured by eleven very prominent 

 revolving ribs; alternating with these are eleven less prominent revolving lines and on either 

 side of each of which is a fine but distinct revolving thread. Sculpture similar on the spire. 

 Canal short and fairly strongly recurved ; aperture moderately narrow and tapering towards 

 the end of the canal ; inner lip slightly incrusted ; outer lip crenulated. 



Dimensions. Altitude 18 mm.; diameter 10 mm.; altitude of spire 6 mm.; angle of 

 spire 57 



Occurrence. Very common at Locality No. 1 (University of Washington Palaeontolog- 

 ical Collection) one and one-half miles east of Sopenah (Little Falls) in bank of Cowlitz 

 River, Lewis County, Sec. 27, T. 11 N., R. 2 W. 



Horizon. Cowlitz formation, Upper Eocene." 



The presence of the posterior sinus as well as the other characters of the 

 shell places this species in the genus Cominella as typified by the recent species 

 Buccinuni porcatum Gmelin. Just below the collar on eocenica there is a deep 

 groove which causes the' lower bordering, spiral rib to become slightly nodose. 



