126 LIST OF DIURNAL BIRDS OF PREY. 



to No. 10, but the adult cross-barred feathers occupy a larger 

 portion of the breast ; the bill is coloured as in No. 5 ; there 

 are three white cross bars on the tail, besides the tip. 



No. 14. Immature in change^ British Guiana. — Very similar 

 to No. 10, but with only two white cross bars on the tail. 

 This specimen, and also Nos. 10, 11, 15, and 16 (all more or 

 less in immature plumage), agrees with No. 5 in having a 

 white mark below the ear-coverts ; but in these specimens this 

 remnant of a nuchal collar is much smaller than in the 

 immature bird No. 8. 



No. 15. Immature, Sarayacu, East Ecuador^ (shot in 

 February). — The entire upper surface dark brown, blackish 

 on the crown of the head; the tail with three white bars 

 besides the tip; bill as in No. 10; under surface as in No. 5, 

 but with the cross bars on the upper breast somewhat 

 broken and not fully developed. This specimen has the pecu- 

 liarity of a plumbeous gorget, about '20 of an inch in depth, 

 across the jugulum. 



No. 16. Immature, Sarayacu, East Eciiador. — Similar to 

 No. 15, but with the cross bars on the breast much more 

 strongly and regularly marked, and no gorget across the 

 jugulum. 



No. 17. Adult, Sarayacu, East Ecuador (shot in February). 

 — This specimen only differs from No. 1 in having the centre 

 of the abdomen free from cross bars, and but a very slight 

 indication of them on the under tail-coverts. 



It is worthy of remark that D^Orbigny, who states that he 

 met with this species in Bolivia [vide ' Voyage,'' Oiseaux, 

 p. 88), describes the colour of the iris as a clear yellow. 



' Not the same as the locality of the like name where the type of 

 M. pelzelni was obtained. 



