GENUS PYRAMIDELLA. Wf 
sion in an oblique canal. The lip is thin and arcuated. The 
columella is imperforate at its base; it is slightly arcuated, 
thin, furnished with three folds, the first more strongly marked 
than the others, which are a little oblique. 
Length 9 lines. Width 4 lines. 
Inhabits the seas of the Isle of France. 
This little shell and the preceding, have so constant an anal- 
ogy, that they should be considered as the same species; that 
which we have just described, is a variety of the plicata, differing 
from it only in its coloring, which is wholly white, and by its 
narrower and slenderer form. 
5. PYRAMIDELLA MACULOSA, Lam. The. Spotted Pyra- 
midella. 
(Collect. Mass. Lam.) Luasr., pl. 844, fig. 72 6. 
Pl. Il, fig. 5, et 5 a, young. 
P. testa turrito-subulata, longitudinaliter striata, albida, maculis punctisque 
rufis sparsim picta; anfractibus numerosis; ultimo spira multo breviore. 
Shell elongated, turreted, brilliant, pointed at its summit, 
slightly widened at its base, of a grayish white color, sometimes 
inclining to red, spotted with numerous brown spots arranged 
in transverse series, three in number upon each whirl, and five 
upon the lower; upon its surface are seen large, brown, dull, 
and irregular spots ; sometimes the points which adorn the shell 
are united, and form undulating, longitudinal lines ; spire formed 
of fifteen or sixteen slightly convex, distinct whirls; suture 
linear, shallow. ‘The lowest whirl is short, and not perforated 
at the base. Aperture small, sub-ovate, and at its depth are 
seen indistinct grooves ; it is terminated at its base by a small, 
narrow, and shallow groove. ‘The columella is somewhat ar- 
cuated, and presents three unequal folds towards the base: the 
first is most projecting, and runs almost horizontally ; the two 
others are small, oblique, and parallel. Right lip arcuated, 
thin, sharp, slightly convex. 
Length 20 lines. Width 7 lines. 
