T]ie Cuhitcd Coverts of the EuornitJice. 331 



follows — the Euornitlue being subdivided for this purpose 

 in accordance with this feature alone. 



Tabular View of the Chief Modifications of Wing Coverts in 



the Eitornithce^. 



A. Without Median Coverts, TROCHiLiDiE (Fig. 1), Cypselid^e 



(Fig. 2), TROGONiDiE, Paradisiid^ (Fig. 3). 



B, With Median Coverts, which show proximal overlap through- 



out their outer and middle extent. 



I. Coverts forming an uninterrupted, or unfaulted, 

 series. (Fifth cubital remex generally present.) 

 («) Never more than one row of Minors (where 

 these are present) which show distal over- 

 lap (see Figs. 2ct, 4, 5). The whole of the 

 Passerines proper. No other birds. 



(b) With two, or, at the most, three rows of 



Minor Coverts. 



(1) Proximal overlap characterises all 



but the inner third of each row. 

 All the normal Picarians (Fig. 

 7). For the Cuckoos and the 

 Goatsuckers, see below. 



(2) Distal overlap predomiaating, only 



the medial third of the Medians 

 and the Minors showing proxi- 

 mal overlap. All the CUCULI 

 (Fig. 6). (For the aquincubital 

 representatives of the Cuckoos 

 see under Goatsuckers, below.) 



(c) Rarely less than four, sometimes with five, 



rows of Minor Coverts. 



(1) Proximal overlap predominating. 



Meleagrid^ (Fig. 8). 



(2) Distal overlap of all the inner half 



of each row, the remainder over- 

 lapping proximally. All the 

 Alectoropod Gallinse (Fig. 10), 

 Pheasants, Grouse, Quails, etc. 

 Also the Tinamous and the 

 Hemipods. 

 VOL. X. Z 



