GENUS BUCCINUM. 93 
Length 6 lines. Width 3 lines. 
Inhabits the Indian Ocean upon the coasts of the Isle of 
France. 
This pretty species, which is almost always transparent, is 
found in most of the collections; but its native place is not 
known with certainty. 
24. BUCCINUM SERRATUM, Durresne. The Serrated Buc- 
cinum. 
(Collect. Mass.) 
Pl. IX, fig. 28. 
B. testa elongata, turriculata, violaceo-purpurata, levi, nitidd, longitudi- 
naliter superne plicata ; spird acutissima, anfractibus convexis, ultimo multd 
majore, depressiusculo; apertura ovato-oblonga, violacea ; labro serrato, 
serraturad rubescente. 
Shell elongated, turreted, of a purple violet color, smooth, 
brilliant, presenting longitudinal folds only upon the upper 
whirls; spire very pointed, composed of nine or ten convex 
whirls, the lowest of which is much larger than the others. 
At the upper part of the whirls there is a more or less broad 
plane regularly crowned with tubercles or folds, which disap- 
pear with age; this plane is much more apparent upon the 
lowest whirl, and is bordered outwardly by a rounded angle. 
The aperture is ovate, oblong, violet within and feebly striated. 
The columella is almost straight, extended and projecting a 
little beyond the lip; some striz arise from the base of the 
left lip, and are continued even to the base of the right lip ; 
right lip denticulated without through its whole length, partially 
forming the angle towards the keel. ‘The teeth are in number 
19 or 20, and of a reddish color. 
Length 2 inches 3 lines. Width 9 lines. 
Inhabits the South Sea, upon the coasts of California. 
