CATALOGUE—SHELLS. 559 
The denticules of the outer lip are ranged in pairs, at regular 
and somewhat distant intervals. 
60. TRITON sCABER, 
T. testd ovato-acutd, cancellatd ; spird elongatd ; epidermide fuscd, 
setosd ; aperturd albd granulosd ; labro interne obtusé denticulato ; 
long. 5 lat. 3 poll. 
Habitat ad oras Americe meridionalis (Valparaiso). Mus. nost. 
The denticules of the inner lip are more elevated than those of 
the last (T. ranelliformis), and are equidistant. It was fished up 
with the anchor in Valparaiso Bay. 
61. Monocrros FUSOIDES. 
M. testd ventricosd, spird mediocri, anfractibus bicarinatis ; anfractu 
basalt liners elevatis admodum distantibus cincto ; aperturd patuld ; 
dente labiali brevi, lato, obtuso ; canali producto, recto, integro ; 
operculo corneo ; long. 23 ; lat. 1% ; poll. 
Habitat ad oras Americe meridionalis (Concepcion). Mus. Brit., 
nost., Brod. 
Approaching Fusus in its elongated and entire canal, while its 
exterior lip has the labial tooth which distinguishes Monoceros. 
The columella is not straight, as in all the other species, but curved, 
so as to make an angle in some specimens at the commencement 
of the canal, and in all it becomes very broad at the point where 
it is opposite to the tooth. The shell is of a reddish colour, 
ventricose, and girt with elevated lines, about a quarter of an inch 
apart. The spire has only two of these lines on each whorl, and 
has a bicarinated appearance. The aperture is wide, the outer lip 
sinuous, its tooth short, broad, and obtuse, and the operculum 
horny. The shell is seldom found in a perfect state, the beak 
being generally broken off, and the surface is, in all the specimens 
that I have seen, covered with a calcareous encrustation, entirely 
concealing the colours. 
" 62. BucciNuM MURICIFORME. 
B. testd ovato-fusiformi, cinered ; anfractibus tumidis, costellatis, 
costellis cancellatis ; aperturd castaneo-nigricante ; labri margine 
crenulato. Muricem mentiens ; long. 1; lat. -°, ; poll. 
Habitat ad fretum Magellanicum. Mus. Brit., nost., Brod. 
The eggs of this species were found, and are preserved in spirits. 
