6 Mr. W. P. Pycraft on the 



Pt. humeralis (text-fig. 2, pt.h., p. 5). — This tract, perhaps 

 rather narrower than usual, calls for no special remark. 



Pt. alaris (text-fig. 3). 



Metacarpo-digital remiges or primaries. — These are actually 

 10 in number, but the 10th remex is reduced to the merest 

 vestige and is even smaller than its covert. According to 

 the usual ornithological custom, this wing would be con- 

 sidered to have but 9 primaries. 



Text-fiff. 3. 



Right wing of Zeledonia corona/a, dorsal surface, shewing the relative 

 lengths of the primaries. 1, 2, 3-9, 10= primaries 1-10; 1, 2, 3 = 

 secondaries; ex. = carpal covert ; £.m. = tectrices majores. 



Reckoning from the wrist outwards, the first 6 remiges may 

 be regarded as subequal in length, the remaining 3 being 

 remarkably shorter, the 9th especially so. The 10th remex, 

 as I have just remarked, is practically non-existent. There 

 is no diastema between the primary and secondary remiges. 



The greatjreduction which has taken place in the length of 

 the outermost primaries is to be attributed to the comparative 



