labipalp

from The Century Dictionary.

• noun A labial palp or feeler of an insect or a mollusk.
• noun In lamellibranchs, an extension of the margin on each side of the mouth into a more or less elongated structure having a grooved and ciliated surface and serving to collect, food-particles and conduct them to the mouth.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Zoöl.) A labial palp.