1 91 8.] Under Wing. Coverts of Birds. 539 



Dryotriorchis batesii. One specimen examined, No. 5602. 



Major uucler coverts a comijlete row, tliere being fourteen 

 on the cubitus and eleven on the manus; this 11th covert 

 measured 2i mm. long, and the remicle only 20 mm. This 

 row has the conforming overlap. 



Median under coverts an apparently complete row on the 

 cubitus, and two besides on the manus; these are small 

 feathers and their overlap seemed to be conforming. If no 

 mistake was made in this observation, it is very excejstional. 



Lophoa'etus occipitalis. One specimen examined, not 

 saved. 



Major under coverts a complete row, with eleven on the 

 manus, the 11th just equalling the remicle ; overlap con- 

 forming. 



Median under coverts forming a probably complete row 

 on the cubitus and one only on the manus, besides one just 

 at the joint ; overlap contrary. 



Astur melanoleucus. Six specimens examined, Nos. 5653, 

 5671, 5844, 5885 & 5899, and one other not skinned. 



Major under coverts forming a complete row, fourteen or 

 fifteen on the cubitus and eleven on the manus, the 11th 

 always exceeding its remex. Overlap conforming on the 

 cubitus and on the distal portion of the manus, but contrary 

 on the proximal portion of the manus, usually about half 

 the feathers of this row, from the carpal joint as far as the 

 middle of the manus, having the contrary overlap, but some- 

 times more, sometimes less. The extent of the portion of 

 the major under coverts on the manus having the contrary 

 overlap varies, not only in diflferent individual birds, but 

 often in the two wings of the same bird ; in specimen 

 No. 5899, on one wing, about half of these coverts, from 

 the carpal joint to the middle of the manus, have the 

 contrary overlap, while in the otiier wing the whole of the 

 manual major under coverts, to the tip of the wing, have 

 the contrary overlap ; but this condition was exceptional. 



Median under coverts rather small, present on the cubitus 

 with one feather, besides, just at the joint, or perhaps on 



