Vol. VJ DICKERSON— FAUNA OF THE TYPE TEJON 75 



Type: — No. 356, Cal. Acad. Sci. Locality 182, on the west 

 bank of the CowHtz River immediately south of the eastward 

 bend about one and one-half miles east of Vader, Washington. 

 Coll., B. Martin. 



Named in honor of Professor C. E. Weaver. 



Mitra uvasana, new species 



Plate 11, figures 13a, 13b 



Shell of medium size; elongate, spindle-shaped, the spire 

 being a third the total length of shell ; spire-whorls, probably 

 eight or nine in number, flat sided, increasing slowly in size ; 

 suture impressed ; body-whorl slightly convex with constriction 

 three-fourths of whorl-length below suture ; shell decorated by 

 many fine ribbon-like spiral ribs. This species differs from 

 Mitra li'ashiugtoniana Weaver and M. simplicissima Cooper in 

 the greater length of spire and its marked ribbing. 



Dimensions : — Length. 29 mm. ; width of body-whorl, 1 1 

 mm. 



Type: — No. 358, Cal. Acad. Sci. Locality 245, Tejon 

 Quadrangle, Tejon group. Along the east bank of a small 

 gulch about one-fourth of a mile east of the pumping plant at 

 the mouth of Grapevine Canyon, about 35 miles south of 

 Bakersfield, Cal. Coll., B. INIartin. 



Voluta slevini, new species 

 Plate 11, figure 16 



Shell fusiform, with very rounded body-whorl; number of 

 whorls unknown; decoration on body-whorl consisting of ten 

 to fifteen strong spiral lines crossed by twenty axial ribs of 

 equal strength ; rounded nodes found at crossing of two sets of 

 decoration ; aperture oval ; outer lip thin ; inner lip bearing at 

 least five plaits of equal size. 



Dimensions : — Width of body-whorl, 9 mm. 



Type : — No. 362, Cal. Acad. Sci. Locality 244, Tejon 

 Quadrangle, Kern County, California, Tejon group. In east 

 bank of Live Oak Creek about three-fourths of a mile from its 

 mouth or from the edge of the San Joaquin Valley and about 

 three miles due east of the mouth of Grapevine Canyon. Coll., 

 B. Martin. 



