'•■ 16 BIKDS OF BRITISH GUIANA. 



Genus ERIONOTUS Cab. & Hein. 



Erionoh(s Cabanis & Heine, Mus. Hein. ii. p. 15, lSo9. Type E. ccenc- 

 lescens (VieilL). 



Fig. 10. — Erionotus piinctatus. 



Tliis o;enns is distingiiisbed by its small size and inconspicuous 

 crest. The bill is small, the length of the exposed culmen three 

 times that of its depth. The wing is rounded^ the fourth, fifth, 

 and sixth primaries longest, the third ranges between the eighth 

 and ninth in length. Tail also rounded, the two middle feathers 

 longest, being about five-tenths the length of the wing. Colora- 

 tion : the male for the most part slate-grey with black on the 

 crown of the head, wings, and tail ; the female rufous on the top 

 of the head, tail, and outer aspect of the wing. 



Key to the Species. 



A, Smaller, wing less than 72 mm. 



a. General colour pale slate-grey ; upper 



tail-coverts tipped with white E. jmnctattis S , p. 17. 



a' . Throat, fore - neck, and breast 

 ocbreous grey ; crown of head 



rid'ous E. imnctatiis § , p. 17. 



h. General colom" dark slate-grey ; upper 



tail-coverts not tipped with white ... E. amazonicus (5, p. 18. 

 V , Crown of head, throat, fore-neck, 



and breast bright ferruginous E. amazonicus 5 , p. IS. 



B. Larger, wing more than 72 nun. 



c. General colour for the most part black 



including the crown and nape E. insiynis J, p. 19. 



c'. Crown of head and nape deep chest- 

 nut E. inslynis $ , p. 19. 



