192 



MR. J. G. GOODCHILD ON THE 



[Apr. 6, 



alone amongst the Galliuse ; but neither in Meleagris nor in any of 

 the Alectoropods do any traces of the upper wing-coverts exist. In 

 some respects the Peristeropod Gallinse, represented by Talegalla 

 (fig. 13 a) and by Crax (fig. 13), stand nearest of the Gallinse to the 

 Accipitres ; while Numida is hardly more removed. 



.Fig. 13 



Crax. 



Talegalla. 



In the Peristeropods we find the commencement of a modification 

 that is carried to a much greater length in other Galline birds, as well 

 as in a large number of forms that have yet to be noticed. This 

 consists in the increased prominence of distal overlap in the proximal 

 third of the cubital area. In Crax (fig. 13), for instance, it will be 

 noticed that the distal overlap, whose commencement is indicated by 

 the small cross, extends into the middle area in the case of the lowest 

 row. The distal overlap at C is another noteworthy feature, as it 

 has not yet been observed in any of the Gallinse except the Peri- 

 steropods. 



Taking the evidence afforded by the mode of imbrication of the 

 wing-coverts alone, it is near to the Peristeropods, and not near to 



Fig. 14 a. 



Fig. 14. 



Colwmba 



Goura.. 



the Pigeons, that Goura should be placed. The pattern is shown 

 in fig. 14, which should be compared with Crax on the one hand and 



