1914] Martin: New Species of Fossil Mollusca 183 



Dimensions. — Length of the type specimen, 35 mm. ; height, 18 

 mm.; transverse diameter, 13mm. 



Occurrence. — This species is found in the middle portion of the 

 Wildcat Series, in Humboldt County, California. University of 

 California Locality 1859. 



Named in honor of Mr. Walter Stalder. 



Genus Buccinum Linne 

 BUCCINUM SAUNDEEST, n. sp. 

 Plate 21, figure 5 



Shell of moderate size, with eight faint spirally lined whorls; 

 spire prominent; apex acute; whorls full, gracefully rounded, in- 

 creasing rapidly in size ; suture distinct, depressed ; aperture semi- 

 orbicular; outer lip evenly arcuate, thin; inner lip smooth; canal 

 short and broad. 



Dimensions. — Altitude of the type specimen, canal slightly de- 

 fective, 40 mm. ; maximum diameter of the shell, 23 mm. ; length of 

 the aperture, 20 mm. 



Occurrence. — Two specimens of this species were obtained from 

 the upper portion of the Wildcat Series two miles south of Center- 

 ville, Humboldt County, California. University of California 

 Locality 1859. 



Named in honor of Mr. Fred Saunders of Capetown, California. 



NASSA MOBANIANA, n. sp. 

 Plate 22, figures la, lb, and lc 



Shell of moderate size, solid, oval, with five or six whorls; apex 

 subacute; whorls of spire increasing rather rapidly in size, slightly 

 convex, narrowly tabulated, sculptured with five or six spiral cords 

 and numerous less prominent axial ribs, the intersections of the axial 

 ribs and spiral cords produce a nodose surface ; interspaces between 

 spiral cords about equal in width to the cords and carrying a small 

 intercalary thread; the spiral cord on the posterior margin of the 

 whorls is usually set off from the other cords by a wider interspace 

 which carries a more pronounced intercalary thread; suture distinct, 

 depressed; body-whorl large, globose, sculptured with fourteen to 

 sixteen strap-like spiral cords, separated by slightly narrower inter- 



