Vol. VII] DICKERSON— CLIMATE AND OLIGOCENE FAUNAS 173 



Exilia weaveri, new species 

 PI. 30, Figs, la and lb 



Shell, long, slender, spindle form ; number of whorls nine or 

 10; spire whorls decorated by about 12 sub-equal spiral threads 

 crossed by slightly sinuous growth lines ; a nearly central spiral 

 line slightly stronger than rest occurring at widest diameter 

 of each spire whorl ; fine beading, a result of the intersection of 

 the two systems of threads further decorating whorls; suture 

 linear, distinct; body-whorl exhibiting sinuous, axial sculpture 

 more prominent than spiral ; aperture elongate-oval ; canal long, 

 slender ; columella nearly smooth. 



This form, which is similar to E. perkinsiana Cooper of the 

 Tejon-Eocene, differs from this last named species in that the 

 axial ribbing is far less pronounced and spiral lines more 

 numerous. 



Dimensions: — Length of broken type, 23.5 mm. ; width of 

 body-whorl, 7.5 mm. 



Type: — No. 410, Cal. Acad. Sci. Locality 181, near Vader, 

 Lewis County, Washington, on east bank of the Cowlitz River, 

 just back of the Greeco ranch house, about four miles east of 

 Vader. Colls., F. M. Anderson and Bruce Martin. 



Named in honor of Dr. Charles E. Weaver, whose investiga- 

 tions in Washington have greatly aided workers in paleon- 

 tology. 



Neverita nomlandi, new species 

 PI. 30, Figs. 2a and 2b 



Shell medium in size, very wide, smooth, with nearly spire ; 

 spire whorls, minute, flat-sided ; body-whorl with a nearly flat 

 upper portion sloping from suture to middle, where whorl be- 

 comes more convex ; aperture semilunar ; outer lip thin ; inner 

 lip covered by a callus which is rounded in the umbilical space 

 which it covers — in most cases completely. 



Dimensions: — Length, 13 mm.; width of body-whorl, 17 

 mm. 



Type: — No. 411, Cal. Acad. Sci. Locality 181, near Vader, 

 Lewis County, Washington, on east bank of the Cowlitz River, 

 just back of the Greeco ranch house, about four miles east of 

 Vader. Colls., F. M. Anderson and Bruce Martin. 



