The Collaborative International Dictionary of English v.0.48:

Chilognatha \Chi*log"na*tha\, n. pl. [NL., fr. Gr. ? lip +
   gna`qos Jaw.] (Zool.)
   One of the two principal orders of myriapods. They have
   numerous segments, each bearing two pairs of small, slender
   legs, which are attached ventrally, near together.
   [1913 Webster]