...Special characteristic, largepads on the soles of the feet, which form sucking discs... 
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...The oral discs are large and roughly circular...
William E. Duellman 「Neotropical Hylid Frogs, Genus Smilisca」
...Not the wings only, but other structures of the imago, varying in extentin different orders, are formed from the imaginal discs...
Geo. H. Carpenter 「The Life-Story of Insects」
...In the blow-flymaggot, Weismann, and have shownthat the imaginal discs of the legs (—1, 2, 3) grow out fromdeep dermal inpushings...
Geo. H. Carpenter 「The Life-Story of Insects」
...A curious segmental displacement of the imaginal discs with regard tothe larva is noticeable in some Diptera...
Geo. H. Carpenter 「The Life-Story of Insects」
...Webbing on thefoot extends to the discs of the third and fifth toes and to the baseof the penultimate phalanx of the fourth toe, except in P...
William E. Duellman 「A Review of the Middle American Tree Frogs of the Genus Ptychohyla」
...The discs are thin round pieces of wood, a fewinches in diameter, with notched edges to imitate the rays of thesun or stars...
Sir James George Frazer 「The Golden Bough」
...Every well-to-do Navaho possesses a silver belt consisting of a dozen or more wrought oval discs, each about two by three inches, fastened to a leather strap...
Edward S. Curtis 「The North American Indian」
...Their headsare shaped as in other representations of this monkey with a distinctcap or bonnet and facial discs...
Alfred M. Tozzer and Glover M. Allen 「Animal Figures in the Maya Codices」
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