70 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



Genus FOSSARUS Phil. 



Fossarus dalli, new species 



Plate 7, figures 13a and 13b. 



Shell small, subglobose, solid, with three or four whorls 

 which increase rather rapidly in size; spire short; whorls of 

 the spire small, convex, sculptured with spiral threads separated 

 by narrower interspaces, about six on the penultimate whorl; 

 suture appressed ; body-whorl more than three-fourths the total 

 length of the shell, convex, globose, sculpture with fifteen spiral 

 threads which are separated by narrower interspaces ; aperture 

 elliptical; outer lip arcuate; columellar margin excavated, 

 smooth ; a small umbilical chink visible on some specimens. 



Dimensions : — Altitude of the type, apex and base broken, 5 

 »mni. ; latitude of the body- whorl, 3 mm. 



Occurrence : — Lower Miocene of Kern River, locality 64. 



The living members of this genus are most commonly found 

 in tropical and temperate seas. 



Type : — No. 148, and cotype No. 149, Cal. Acad. Sci., Kern 

 County, California, in bottom of a small canyon about P/4 

 miles due north of Barker's ranch house. 



Named in honor of Dr. W. H. Dall. 



Genus TURRITELLA Gray 



Turritella carrisaensis, new species 



Plate 4, figure 4. 



Shell solid, elongated, turrited, with about ten whorls ; spire 

 very high ; whorls tabulated at the posterior third ; tabulation 

 flat and forming an angle of forty degrees with the axis of the 

 shell ; surface in front of the angle flat or slightly concave ; orna- 

 mentation consisting of four spiral ridges, one prominent form- 

 ing the angle, two about midway between the anterior margin 

 and the angle, and the fourth, a sutural cord, on the anterior 

 margin; the latter forming a slight angulation on the base of 

 the last whorl ; suture deeply impressed ; aperture subquadrate. 



Dimensions : — Altitude of the figured specimen, apex de- 

 fective, 76 mm. ; latitude of the last whorl, 29 mm. 



