212 PALAEONTOLOGY OF CALIFORNIA. 



NATICA, Adanson. 



N. UVASANA, n. s. 



PL 32, Fig. 277. 



SHELL small, subglobose ; spire somewhat elevated ; whorls 

 four; suture distinct; mouth subeircular; inner lip incrusted 

 above ; umbilicus somewhat open, with a small revolving callus. 

 Surface smooth, showing a few lines of growth. 



Figure, magnified. 



Locality: Near Fort Tejon; Dr. Horn. 



SCALARIA, Lam. 



SUBGEN. OPALIA, H. and A. Ad. 



S. MATHEWSONII, n. s. 



PL 32, Fig. 278. 



SHELL robust, turriculate; whorls numerous, convex; suture 

 distinct. Surface marked by about eighteen or twenty large ribs, 

 with broad, convex interspaces, crossed by fine revolving lines ; 

 lower angle of the body whorl bordered by a prominent rib, the 

 lower surface being flattened and marked only by striae similar to 

 those on the sides of the whorl. Mouth subcircular, truncated 

 below. 



Figure, natural size. 



Locality: A single specimen, from near Martiaez ; collected by Mr. Mathewson. 

 \ 



TURRITELLA, Lam. 



T. INFRA-GRANULATA, II. S. 

 PL 32, Fig. 279. 



SHELL elongated, tapering, scalariform; whorls numerous, 

 sloping straight, or somewhat concavely outwards above, angu- 



