9.2 Haus von Berlepsch on the Genus Cyclorhis. 



A. Bill stout, upper mandible pale. 



N.B. — The young of C. virenticeps is an exception. 

 a. Base of lower mandible more or less plumbeous *. 

 a'. Belly yellow like breast. 



a". Lower parts intense yellow 1. Jlaviventris. 



b". Lower parts pale yellow la. fiaviv. yiicatanemis ? 



b'. Belly white, greyish white, or ochra- 

 ceous. 

 c". Pileum pure cinereous in adults, 

 suffused with brownish in imma- 

 ture plumage. Legs flesh- 

 coloured or dusky. 

 d'". Belly nearly pure or rusty white. 

 Legs always flesh-coloui'ed. 

 e"". Upper parts bright yellowish 

 olive ; supercilia deep chest- 

 nut ; sides of head and chin 



ashy white 2. flavipectua. 



/"". Upper parts greyish olive; 

 supercilia bright rufous; 

 sides of head and c\\\vl c2a. Jlavip. suliflavescenii. 



darker cinereous \2b. insularis ? 



c'". Belly sufflised with ashy; legs 



sometimes dusky 3. yuianensis. 



d". Pileum always suffused with brown- 

 ish ; legs dusky plumbeous. 

 ff"". Smaller,bill moderately stout. 4. cearensis. 



h"". Larger, bill very stout 6. vij-idis. 



e". Pileum mostly green ; legs pale 

 flesh-coloured. 



i"" . Pileum uniform green 8. virenticeps. 



k'"'. Pileum green mixed with 



chestnut 9. contrerasi. 



h. Base of lower mandible never plumbeous ; 

 bill uniform reddish, 

 c'. Ritfous superciliary stripe ending above 



the eye 7. ochrocephala, 



d'. Rufous superciliary stripe protracted 



to the sides of the occiput or nape . . 6. wiedi. 

 B. Bill small, upper mandible always black. 

 f. Bill black, basal third of lower mandible 



flesh-coloured 10. niyrirostris. 



d. Bill uniform black 11. atrirostris ? 



* Some specimens of C. Jlaviventris and C. Jlavip. subjiavescens, 

 perhaps immature birds, lack the plumbeous on the base of the under 

 mandible, 



