MUSOPHAGI 



L>83 



Corythaix erythrolophus 

 „ alhocristata 

 „ persa 



Musophaga violacea . 



Schizorhis africanus 



17 inches 



18 „ 

 18 „ 

 18 „ 

 20 „ 



The windpipe of Corythaix persa is shghtly swollen 

 along its course, narrowing again at the bifurcation. It is 

 much ossified. Counting as 

 the last tracheal ring that to 

 which the pessulus is attached 

 in front, the intrinsic muscles 

 are inserted on to the third 

 in front of this. The first 

 two bronchial semi-rings are 

 ossified ; the third, between 

 which and the second there is 

 a considerable membranous 

 interval, is the first of the 

 purely cartilaginous series. 

 The extrinsic muscles are 

 stout, and arise seven or eight 

 rings from the end of the 

 trachea, and pass at once to 



their insertion ; they run no distance along the trachea, as is 

 so common. 



Musophaga has no intrinsic muscles ; Schizorhis has. 



As to muscles, the tensores patagii are very simple, and 

 the biceps slip is entirely absent. 



The tensor brevis sends off a wristward slip just before 

 its insertion in both Musophaga and" Corythaix ; ^ it is 

 reinforced by a pectoral slip and by a fibrous slip from the 

 humeral crest. 



The anconcBus longus has not, at any rate in Corythaix 

 alhocristata, a humeral head. Glutaus I. is large, covering 

 the biceps ; glutmus V. is absent (Corythaix erythrolophMS, 

 Musophaga) or present {Schizorhis africanus). The muscle 



Fig. 139. — Intestines of Corythaix 



chlorochlamys (after Mitchell). 



.r, short-circuiting vessel divided. 



Absent — perhaps as an individual variation — in C. alhocristata. 



