22 STURNID^] DILOPHUS 



Key to the Genera. 



a. Plumage of the male and female the same or 



only differing slightly. 

 a 1 . Plumage not glossy or metallic, or only 



slightly so. 

 a?. Nasal aperture elongated. Old males in 



summer with wattles on the head Dilophus, p. 22. 



6 2 . Nasal aperture oval, in front of a groove. 



a?. Outstretched feet fall short of tail end ... Amydrus, p. 26. 



& 3 . Outstretched feet reach end of tail Spreo, p. 29. 



6 1 . Plumage highly glossy and metallic, with re- 

 flections of green, violet and purple. 

 c 2 . Tail longer than the wing and much 



graduated Lamprotornis, p. 31. 



d?. Tail shorter than the wing, graduated or 



square Lamprocolius, p. 34. 



b. Plumage of male and female differing markedly ; 



the male highly metallic, the female of plain 



colours without gloss Pholidauges, p. 43. 



Genus I. DILOPHUS. 



Type. 

 Dilophus, Vieill. Anal. p. 34 (1816) D. carunculatus. 



Bill long, straight and somewhat depressed at the base ; the 

 culmen curved, the sides compressed to the tip, which is emarginated ; 

 the gonys curved and ascending; the nostrils lateral and situated 

 in a membranous groove with the opening rounded and exposed. 

 Wings moderate, the first quill small, the second rather shorter 

 than the third or fourth, which are equal and longest. Tail short 

 and even. Tarsi longer than the middle toe, strong, covered in 

 front with broad transverse scales ; toes moderately strong, the 

 outer rather longer than the inner and united at the base ; the hind 

 toe long ; claws moderate, slightly curved and acute. In old males 

 in summer the entire head and face bare of feathers, sometimes 

 with erect fleshy wattles on the head and pendent lappets hanging 

 from the bare throat. The females are always without wattles and 

 lappets but have a space round the eyes and on each side of the 

 throat without feathers. One species only belongs to the genus. 



