306 



PirEIDiE. 



which also shows the peculiar wing-structure of the males of this 

 genus in a marked degree. This maybe described as follows :— 

 The ten primaries are of the ordinary formation of birds of this 

 family, the first being shorter than the second, third, and fourth, 



d e f 



Secondaries of Machmropteriis deliciosus. (P. Z. S. 1860, p. 90.) 



.;. Fifth and sixth secondaries of male Macharopterus deliciosus, from above. 

 c. Seventh secondary, from beneath, d, e. Fifth and sixth secondaries of 

 female, from above. /. Seventh secondary of female, from beneath. 



which are nearly equal and longest, and of about the same length 

 as the sixth. The first three secondaries are thick-stemmed and 

 curved towards the body at a distance of about two thirds of their 

 length from the base. The fourth and fifth show this structure to 

 a greater degree, with some corresponding alteration in the barbs on 

 each side, as may be seen by comparing fig. a, representing the 

 upper surface of the fifth secondary of the male bird, with fig. d, 

 which gives a similar view of that of the female. In the sixth and 

 seventh secondaries of the male the terminal half of the rhachis is 



