. On the natural history and classification of birds . Ptilonopus. {fig. 299- «• 300. c, d) Tarsus short, fea-thered. Toes cleft to the base; the inner shortest. Billshort: the extremities of thetwo mandibles of equal thickness. The gonys very short,strong, and forming an as-cending angle. Tropics ofAsia and Australia. Ptilonopus, Sw. Bill moderate ; the firstquill shorter than the se-cond, and generally nar-rowed ; primaries not muchlonger than the moderate, hypogaster. PI. Col. lb. lb. 106. purpuratus. Nat.
. On the natural history and classification of birds . Ptilonopus. {fig. 299- «• 300. c, d) Tarsus short, fea-thered. Toes cleft to the base; the inner shortest. Billshort: the extremities of thetwo mandibles of equal thickness. The gonys very short,strong, and forming an as-cending angle. Tropics ofAsia and Australia. Ptilonopus, Sw. Bill moderate ; the firstquill shorter than the se-cond, and generally nar-rowed ; primaries not muchlonger than the moderate, hypogaster. PI. Col. lb. lb. 106. purpuratus. Nat. monachus. PL Col. 253. leucogaster. Nat. magnificus. PI. Col. , Cuv. (fig. 300. e) Bill very strong. Wingspointed; the three first quills nearly equal, and muchlonger than the others; tertials short. 348 ON THE CLASSIFICATION OF BIRDS. V. calva. Tern. Pig. i. 63. olax. PI. Col. PI. Enl. 163. Sphenurus, Sw. Habit of Vinago; but the tail longand graduated ; the two middle feathers greatlynarrowed, and projecting considerably beyond therest. Fissirostral type. S- semitorquatus. PI. Enl. 240. Lophorynchus, Sw. Bill strong* the base of the undermandible considerably thickened. Nostrils surmount-ed by a compressed and recurved crest advancingon the basal half of the culmen. Wings very long ;the two first quills slightly graduated. Tail long,even. Australia. Rasorial type.* L. dilophus. Shaws Zool. N. H. pi. 5. Columba, Linn. Bill slender. Feet formed both
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