HILGARD—-NATURAL SERIES. 125 
PyruLa GLABRA, Shumard. 
Shell small, ovate ; spire conic, spiral an. tigi volutions 
about four, convex widening rapidly from t ; last vo- 
lution subpyriform » very ventricose above, oer extremity 
curved a little to the left; aperture elongate-ovate, broad and 
rounded behind and contracted before. The exterior co 
of the shell is not well ioawteagt ; it appears to be bree 
smooth and without ornament. 
ength, 9 lines; do. of last volution, 8 lines; greatest width, 
6 lines. 
Form. & Loc—Found with Inoceramus Vancouverensis 
and Nautilus Dekayi in dark limestone, Nanaimo River, Van- 
couver’s Island. It seems to be rare, as there is but one spe- 
cimen in the collection. 
Exposition of a Natura. Series py ImwepiatTe CatTHouic 
Arrinities in the Vegetable Kingdom. 
ey... 6, HILGARD, M.D. 
- ANALYTIC CLASSIFICATION. 
_ Ey. very classification derives its significance from the 
An absolute ¢ 
of view it e 
pected to “all the ultimate bea 
phenomena saat is possible” only 
from t t of their t 
coitons AY opener of i: peti 
