GENUS BUCCINUM. 89 
91. BUCCINUM POLYGONATUM, Lam. The Polygon Buc- 
cinum. 
(Collect. Mass. Lam.) Voy. de? Astr., pl. 32, fig. 28-29, var. 
Pl. XXIX, fig. 119. 
B.. testa ovato-conica, longitudinaliter costatd, transversim minutissimé 
striata, olivaced, costis prominentibus ; spira obtusiuscula ; apertura rotun- 
data ; labro extus marginato, intus striato. 
Shell ovate, conical, spire composed of six or seven indis- 
tinct whirls, sub-convex, plaited throughout their whole length, 
crossed by fine and very close transverse strie ; those of the 
base more prominent; the longitudinal folds disappear insen- 
sibly upon the right side of the lowest whirl, at the upper 
part of which we find merely nodosities ; aperture rounded, 
whitish ; the cavity of a brown color, and marked by trans- 
verse bands; right lip bordered externally, and ornamented 
internally, with small, fine strie; columella arcuated, covered 
with a pretty wide callosity, brown at its upper part, and 
white towards the base, which is adorned with small gcuttules. 
The coloring is olive, with a white or yellowish band. Upon 
the top of the lowest whirl, the folds and the tubercles are 
sometimes whitish. 
Length 9 lines. Width 5 lines. 
Inhabits the coasts of Brazil, and those of New Holland, at 
Port Jackson. 
Quoy and Gaimard have given, in the Atlas to their Voyage, 
p. 32, fig. 28 and 29, a variety of this species, which we have 
also represented in our plate 27, fig. 107. This last differs only 
from the one we have just described, by the absence of folds 
upon the lowest whirl, and the indistinctness of the callosity. 
This variety comes from Port Jackson. 
