DOLIUM PICTUM. 277 
is smaller and more solid, with a thickened callus on the 
columella and strong lirae within the outer lip; moreover 
D. Dunkeri has only 2 or 3 intermediate lirae in the 
grooves between the upper ribs. D. variegatum Lam. has a 
less number of ribs, with only a few intermediate lirae, 
and is of a quite different painting. 
Rhoon, near Rotterdam, September 1893. 
Notes from the Leyden Museum, Vol. XV. 
