Vol. VII] DICKERSON— CLIMATE AND OLIGOCENE FAUNAS 179 



Fusinus gesteri, new species 

 PI. 31, Fig. 4 



Shell with six and a half whorls ; the first three elevated, 

 smooth, with but slight convexity ; fourth and fifth whorls dec- 

 orated by about 10 wavy, equally spaced spiral lines crossed by 

 10 sinuous axial ribs; body-whorl with axial ribs covering 

 upper third of shell ; the lower portion being covered by spiral 

 lines only; aperture constricted medially; inner lip but slightly 

 calloused. 



Dimensions: — Length, 14 mm. ; width of body-whorl, 6 mm. 



Type: — No. 429, Cal. Acad. Sci. Locality 181, near Vader, 

 Lewis County, Washington, on east bank of the Cowlitz River, 

 just back of the Greeco ranch house, about four miles east of 

 Vader. Colls., F. M. Anderson and Bruce Martin. 



Named in honor of Mr. Clark Gester. 



Conus ruckmani, new species 

 PI. 31, Figs. 6a and 6b 



Shell small with six whorls; surface of each whorl between 

 wavy, linear suture and shoulder, concave and marked by three 

 or four spiral threads cut by numerous, crescentric growth 

 lines; 18 to 24 rounded nodes decorating shoulder whorls; 

 body-whorl marked by about 20 granular spiral ribs. 



Dimensions: — Length, 12.5 mm.; width of body-whorl, 7 

 mm. 



Type: — No. 431, Cal. Acad. Sci. Locality 181, near Vader, 

 Lewis County, Washington, on east bank of the Cowlitz River, 

 just back of the Greeco ranch house, about four miles east of 

 Vader. Colls., F. M. Anderson and Bruce Martin. 



Named in honor of Mr. John Ruckman, whose careful work 

 demonstrated the Oligocene age of at least the upper portion 

 of the white shales of the Coalinga region. 



Eulima clarki, new species 

 PI. 31, Fig. 8 



Shell minute with nine whorls ; first three whorls naticoid ; 

 others slightly convex with linear distinct suture and two ob- 



