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



Nyctilochus kewi, new species 

 Plate 7, figures Sa, 5b 



Shell stout, with six whorls ; spire only two-fifths the length 

 of shell ; the first two whorls smooth, the third, fourth and 

 fifth whorls slightly convex and decorated by four strong 

 spiral lines with a thread between each two and by fourteen 

 axial ribs which make rounded nodes at the intersections with 

 spiral ribs ; of the spiral ribs, the lower two are the strongest 

 and they occur near the base of the whorl at the place of great- 

 est width ; decoration of the body whorl similar to the 

 decorated spire whorls ; the largest spiral rib marking the 

 shoulder which is located two-fifths of the whorl length below 

 its sinuous suture ; the spiral ribs above and below the shoulder 

 not as well marked as those on the upper whorls ; two rounded 

 varices extending over the whorls; these varices about 180° 

 apart being slightly discontinuous; canal short, twisted; mouth 

 broadly oval. This species has a shorter spire than Bursa 

 cowlitzensis (Weaver) or Bursa zvashingtoniana (Weaver). 

 Its nodes are rounded instead of pointed like those of Bursa 

 zvashi}igtoniana (Weaver) . 



Dimensions: — Length of spire, 21 mm.; width of body 

 whorl, 15 mm. 



Type:— No. 11054, Univ. Calif. Locality 458, Tejon 

 Ofladrangle, Kern County, California. Tejon group. West 

 side of Grapevine Creek, elevation 2050 feet about four and 

 one-half miles S. 6° W. of 1085 B. M. ; about 400 feet (Strati- 

 graphic) above Basement Complex — Tejon contact. R. E. D. 

 536. Coll., R. E. Dickerson. 



Named in honor of Mr. Wm. Kew, who has assisted the 

 writer upon many occasions in investigations of the Eocene of 

 California. 



Bursa washingtoniana (Weaver) 



RancUa zvashuigtouiaua Weaver, C. E., Wash. Geol. Surv. 

 Bull. 15, p. 41, 1912. 



Plate 7, figures 4, 6 



This species is a variable one and weathering sometimes 

 obscures the finest spiral lines or removes them entirely. On 

 this accoutTt the specimens collected at the type Tejon appear 

 to be slightly different (See Plate g, figure 4) from typical 

 forms. Fortunately several specimens from Locality 245 are 



