GENUS BUCCINUM. 45 
44, BUCCINUM CRIBARIUM, Lam. The Sieve Buccinum. 
(Collect. Mass. Lam.) List, pl. 929, fig. 24. 
Pl. XVI, fig. 57. 
B. testd parvula, oblonga, cylindraced, levi, fulva aut rufa, albo-punc- 
tata; anfractibus subconnatis, margine superiore fascia albo et fusco ar- 
ticulata cinctis; spira apice truncata; apertura angustiuscula ; labro intus 
striato. 
Shell small, oblong, pretty thick, cylindrical, smooth, fawn 
colored or red, dotted with small, round, white dots, disposed 
regularly in quincunxes, or in a net work ; spire composed of 
eleven whirls, generally truncated at the summit. The whirls 
are subconnate, surrounded at their upper part by an articulat- 
ed band of white and brown; the lowest whirl ornamented 
towards its base with numerous transverse fine strie. Aper- 
ture narrow, of a violet color.. Lip obtuse, thick, almost 
straight, interiorly having small folds or teeth in large quanti- 
ties. The upper extremity forms the commencement of an 
~-emargination. All the external surface of this shell is covered 
by a membranous, reddish, thin periosteum, so transparent, 
that the colors are seen through it. 
Length 5 lines. Width 2 lines. 
Inhabits the Indian Ocean, the island of Ascension, and the 
coasts of Gorée, where it is very abundant. 
This pretty little species is the same as the Buccinum Barnet 
of Adanson; the shell, owing to differences of age and sex, 
presents some varieties in its form. This author remarked that 
young shells have, proportionally, less length, less thickness, and 
less spire; the extremity is at the same time less obtuse; the 
right lip thinner, sharp, and without teeth. _He also observed, 
that, for the most part, the old shells which presented similar 
characters, were old females. Finally, he pointed out another 
peculiarity, common to all the specimens, which have attained 
the number of eleven whirls : the shell is broken at the extremity 
