206 



STEUOTURE AND CLASSIFICATION OF BIRDS 



described by Sclatbr.' There are two patches in the 

 lumbar region, lying between the dorsal and the femoral 

 tracts. 



The tongue of the rollers wants the spiny fringe at the 

 base which is so common a feature of this organ in other birds ; 

 it is horny in front and entire at the tip. The liver has a 

 larger right lobe and a gall bladder. 



The following are intestinal measurements: — 



Leptosomus . 



Eurystomus 



Coracias 



Small Intestine 



9| inches 



10 „ 



11 „ 



Large Intestine 



22 inches 

 1 inch 



9 



Oseca 



2i,2f inches 

 14 inch 

 2-2 inches 



The tensores patagii of Leptosomus are figured in the 

 accompanying cut.^ The brevis tendon gives off a wrist- 

 ward slip just before its attach^ 

 ment to the tendon of extensor 

 metacarpi radialis longus, oveif 

 which it passes to be inserted 

 below. There is no biceps slip. 

 Coracias garrulus is the 

 same save for the fact that 

 there are two separate brevis 

 tendons, from the first of which 

 the anterior gives off the 

 wristward slip ; the inner 

 thinner tendon of these does not 

 cross the wrist. Eurystomus 



does not differ. In these birds 

 Fig. 96. — Tensoees Patagii of Lev- ,1 ■ n n i n 



tosomus (after Forbes). there IS a well-developed ex- 



secundariorum of the 



type, which 



Profe'ssor Gaerod has called ' ciconiiform.' 



The muscle formula of the leg is AXY— . The gluteus 



maximus does not reach below the acetabulum ; the gl. 



' ' On the structure of Leptoxoma discolor,' P. Z. S. 1865, p. 682. 

 ' From Forbes, ' On the Anatomy of Leptosoma discolor,' P. Z. S. 1880p. 

 p. 464. 



/>, pataglum ; (.p. 6r, tensor patagii brevis ; panSOT 

 e.Tnr, extensor metacarpi; /.its origin. 



luliy developed 



