Note: The proboscis of an elephant is a flexible muscular
elongation of the nose. The proboscis of insects is
usually a chitinous tube formed by the modified
maxill[ae], or by the labium. See Illusts. of
{Hemiptera} and {Lepidoptera}.
2. (Zo["o]l.) By extension, applied to various tubelike mouth
organs of the lower animals that can be everted or
protruded.
Note: The proboscis of annelids and of mollusks is usually a
portion of the pharynx that can be everted or
protruded. That of nemerteans is a special long
internal organ, not connected with the mouth, and not
used in feeding, but capable of being protruded from a
pore in the head. See Illust. in Appendix.
{Proboscis monkey}. (Zo["o]l.) See {Kahau}.