. The birds of America : from drawings made in the United States and their territories . The under parts are greyish-white. Length 12^ inches, extent of wings 16; bill along the ridge 1,along the gap 1^. Adult Female. The female differs very littlefrom the male in colouring. In a female of this species pre-served in spirits, the length to theend of the tail is llf inches; toend of wings 9, to end of claws 8|;extent of wings 15|; wing fromflexure 5T82-; tail 5-?%. The roof of the mouth is flat,and covered with a transparentskin, as in Goatsuckers and Owls;the upper mandible very narrowtowards t
. The birds of America : from drawings made in the United States and their territories . The under parts are greyish-white. Length 12^ inches, extent of wings 16; bill along the ridge 1,along the gap 1^. Adult Female. The female differs very littlefrom the male in colouring. In a female of this species pre-served in spirits, the length to theend of the tail is llf inches; toend of wings 9, to end of claws 8|;extent of wings 15|; wing fromflexure 5T82-; tail 5-?%. The roof of the mouth is flat,and covered with a transparentskin, as in Goatsuckers and Owls;the upper mandible very narrowtowards the end, and slightlyconcave, with three longitudinalridges; the posterior aperture ofthe nares oblong behind, linearbefore, only 4 twelfths long; thewidth of the mouth 7 twelfths; thelower mandible channelled. The;tongue is very slender, 101- twelfth;;long, emarginate at the base, withlong slender papillae, its breadth atthe middle only 1^ twelfths, hornyin the greater part of its length,with the edges lacerated, the tiprather acute and slight. (Eso-phagus, a b c, 3 inches 7 twelfths. THE YELLOW-BILLED CUCKOO. 299 long, at its commencement 6 twelfths in width, gradually diminishing to 4twelfths; the proventriculus, b c, 5 twelfths in breadth. The stomach, c d e,very large, broadly elliptical, compressed, 1 inch 2 twelfths long, 1 inch inbreadth, and when distended seeming to occupy almost the whole cavity ofthe abdomen; in which respect, as well as in its structure, it is preciselysimilar to Cuculuscanorus; its walls are extremely thin, its muscular coatbeing formed of a single series of small fasciculi. It is turgid with theremains of insects, among which are a great quantity of hairs, some of themadhering to, or thrust into the inner coat, which is soft, destitute of rugae,and of a bright red colour. The proventricular glands are large, cylindrical,\\ twelfths in length and about \ twelfth in breadth, forming a belt about 9twelfths in breadth. The pylorus is extremely small,
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectbirds, bookyear1840
