6 CONIDA. 
which in these mollusks is long, and armed with two ranges of 
sharp pointed teeth. 
“The Cones become more numerous and varied in their colors, 
as we approach the equatorial seas, and they form bright and 
beautiful ornaments to the shores of tropical islands. They seem 
to prefer obscure holes in the rocks, where they lead a predatory 
life, boring into the substance of the shells of other mollusks, 
for the purpose of sucking the juice from their bodies. They 
crawl but slowly, and usually with their tentacles extended in a 
straight line before them. They are very timid, and shrink within 
their shells quickly on the approach of danger. Some affect 
deep water, and one was dredged by us in the Sunda Straits, in 
thirty fathoms; and another, the Conus Thalassiarchus, at 
Sooloo, in about forty fathoms.” 
“The proboscis in its retracted state, as seen in the animal 
preserved in spirits, is short, broad, conical, annulate, prominent, 
in the base of the tubular veil, with a roundish, central mouth. 
Instead of having any elongated lingual band covered with short 
transparent teeth, like the rest of the Proboscidifera and Ros- 
trifera, it has a fleshy tube with a bundle of subulate barbed 
teeth directed towards the mouth; this tube is prolonged behind 
and below at right-angles with its upper part and mouth into an 
elongated, fleshy, attenuated subulate tube, containing with its 
hinder edge two series of similar subulate red barbed teeth, 
directed from the aperture towards the apex of the tube. (A 
single tooth, greatly magnified, of C. Hebrzus, Linn., is repre- 
sented in Structural and Systematic Conchology, t. 10, f. 5.) 
“The teeth are implanted by a distinct root into the substance 
of the tube; those near the upper or oral part of the tube are 
placed rather irregularly in two parallel rows, but those nearer 
the tip are more crowded, and the lines gradually diverge from 
each other. 
‘‘T shall not attempt to describe the manner in which these 
teeth are brought into action, as I have only seen them in the 
preserved specimen; but those nearest the mouth are probably 
used to pierce the animal, which is held fast by the contraction 
of the veil, as described by Adanson. The organization and 
structure of the mouth is so unlike that of the other Probosci- 
difera and Rostrifera, where the teeth are placed on a lingual 
