Chlorestes notatus x Thalurania glaucopis. Alternate name on piece: Eucephela Smaragdocaerulea [Curtis] 5-4447; large letter J. Artist's name(s): Gould, John; Richter, Henry Constantine. Apparently conceptual sketch by Gould; corrections; "2 specimens / Caerulia" [text uses form "smaragdo-caerulea"];