Vol. IV] ANDERSON AND MARTIN— NEOCENE RECORD . 95 



slightly incrusted, straight; canal short, posterior sinus deep 

 and narrow, near the suture. 



Dimensions : — Altitude of the type, 6 mm. ; diameter of the 

 last whorl, 2 mm. 



Type : — No. 233, and cotype No. 234, Cal. Acad. Sci., lower 

 Miocene of Kern River, California, locality 65, on the west 

 bank of a small canyon P/i miles northeast of Barker's ranch 

 house. 



Mangilia howei, new species 

 Plate 7, figure 7. 



Shell small, fusiform, with five whorls ; spire elevated ; whorls 

 slightly convex, crossed by seven strongly raised vertical ribs 

 with wider interspaces; spiral sculpture consisting of fine 

 threads which are most prominent on the anterior portion of 

 the last whorl; aperture elliptical, with an arcuate outer lip; 

 columella incrusted, canal short and wide. 



Dimensions : — Altitude of the type specimen, 6 mm. ; maxi- 

 mum diameter, 2.5 mm. 



Type : — No. 234, Cal. Acad. Sci., lower Miocene of Kern 

 River, California, locality 68, on the north bank of Kern River 

 about H mile west of the power plant and about 3 miles east 

 of the Rio Bravo ranch house. 



Genus BULLA Klein 

 Bulla cantuaensis, new species 



Plate 5, figures 3a and 3b. 



Shell one inch or more in length, broadly elliptical, smooth 

 or showing only regular lines of growth; aperture extending 

 the full length of the shell, ovate in front, narrowed behind; 

 outer lip longer than the body-whorl ; umbilicus deep and nar- 

 row at the posterior end, closed or hidden anteriorly. 



Dimensions : — Altitude of the type specimen, 24 mm. ; diam- 

 eter, 15 mm. 



Occurrence : — Shells of this species are abundant in the 

 Temblor beds just north of Cantua Creek and in beds of doubt- 

 ful age west of Coalinga. 



December 30, 1914. 



