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Show 1873.] OF T H E ETHIOPIAN REGION. 601 a. Feathers of the breast with distinctly stiffened and glossy shafts a. Taccocua. b. Breast-feathers ordinary. a'. Head and throat ornamented with metallic horny tips to the feathers /"{. Lepidogrammus. b'. Head and throat ordinary, with no metallic tips. a". Line of gape longer than the tarsus. a'". Nostrils hidden by small feathers y. Basylophus. b'". Nostrils not hidden. a"". Bill almost straight, as also is the gonys 5. Rhinortha. b"". Bill conspicuously curved, the line of gape following the curve of the bill. aa. Nostrils rounded, or slightly oval in shape. e. Rhopodytes. bb. Nostrils more or less linear. aa'. Nostrils placed basally in a large groove. £. Rhinococcyx. bb'. Nostrils simple, not placed in a groove. aa". Nostrils straight. aa'". Bill higher than broad, measured at gape. aa"". Lores and sides of face bare, papillose i\. Phcenicophaes. bb"". Lores feathered ; sides of face bare and smooth 0. Rhamphococcyx. bb'", Bill broader than high i. Zanclostomus. bb". Nostrils ascending K. Poliococcyx. cc". Nostrils descending \. Ceuthmochares. b". Line of gape shorter than tarsus. a'. Nail of the hind toe curved, shorter than the hind toe itself. a". Height of bill less than its breadth. a'". Distance from the fore part of eye to the fore part of nostril greater than the distance from the latter part to tip of beak /x. Carpococcyx. b"'. Distance as above measured less than from the nostril to tip of beak v. Sericosomus. b". Height of bill equal to its breadth o. Cochlothraustes. b'. Nail of hind toe straight, like that of a Lark, always equal to, and generally surpassing, the bin d toe itself TT. Centropus. Genus 1. TACCOCUA. (Fig. 5, p. 602.) T Taccocua, Less. Traite d'Orn. p. 144 (1831) .. T. leschenaulti. Acentetus, Cab. & Heine, Mus. Hein. Th. iv. p. 102 (1862) T. infuscata. Evinces great affinity to Centropus, not only in coloration, but especially in the stiffened shafts to the breast-feathers. Genus 2. LEPIDOGRAMMUS. (Fig. 6, p. 602.) Lepidogrammus, Reich. Syst. Av. Nat. pl. xlvii., Type. fig. 4 (1849) L. cumingi. Distinguished by its somewhat Turacine aspect, the contour of the crest being rounded, and the feathers curving over the nasal openings, which they hide from sight. Above all remarkable for the horny appendages to the feathers of the head. |