190 MR. J. G. GOODCHILD ON THE [Apr. 6, 
blade of a lancet closes into its sheath. The feature referred to can 
be better understood by reference to C, figure 8, taken from a living 
specimen of Calopsitta nove-hollandie, which represents the style 
prevailing throughout probably the whole of the Psittaci. 
Essentially the same pattern as is found in the Psittaci prevails 
also throughout the whole of the Striges, and also throughout the 
whole of the Accipitres, with the exception of Pernis, Pandion, 
Gypogeranus, and the Cathartidee. These exceptional forms will be 
referred to again in their proper places. Fig. 9, representing the wing 
Falco. Phalacrocorax. 
of a Merlin, well illustrates the whole of the normal Accipitrine forms. 
Mr. Wolf’s beautiful figures of the Birds of Prey all afford excellent 
illustrations of the same point, while, from a part,of the world 
where experience has led us to expect minute accuracy of detail, we 
have the Japanese figure in metal of a species of Spizaetus, now 
amongst the choicest. treasures at South Kensington Museum, which 
affords a correct illustration of the Accipitrine style of cubital coverts. 
Of the Pelicans, in the present connection, nothing satisfactory can 
be made out, on account of the lax and drooping condition of their 
feathers, even in health. But Phalacrocorar (fig. 9a) gives us a 
style hardly distinguishable in any noticeable respect from that of 
the Accipitrines. On the other hand, Fregata, Sula, Plotus, and 
some other forms associated with them are widely removed, ptero- 
graphically, from the Cormorants. 
All the Herons and their immediate allies, Nycticorax (fig. 10), 
Botaurus, and, I believe, also Cancroma, closely follow the 
Accipitrine mode of imbrication. The principal difference lies 
in the reduced prominence of the supplementary row of lancet-like 
feathers (upper wing-coverts) so characteristic of the Birds of Prey 
and the Parrots. Healthy Night-Herons in immature plumage 
exhibit the Ardeine style of median cubital coverts remarkably well. 
The Ciconiide, in regard to the point under notice, will fall to be 
described in another part of this paper. 
