CORAOI^ 211 



able fact that when the rectrices in question first appear 

 they are narrower at the points where the nibbling occurs, and 

 where they will be ultimately denuded, than they are else- 

 where. But an inheritance of this particular acquired 

 character can hardly be asserted. 



An aftershaft is present, but small. 



The tensores patagii are simple, and there is no biceps 

 slip. Thereis a, Aeshj pectoralis propatagialis. The tensor 

 brevis consists of two parallel tendons, the anterior of which 

 does not give off a wristward slip. The fan to the ulna arises 

 in M. brasiliensis and M. mquatorialis as a continuation of 

 the hinder of the two tendons, in M. Lessoni between them. 

 Hylomanes gularis agrees with the first. The anconaus has 

 a humeral slip. The somewhat rudimentary expansor 

 secundariorum only reaches the margin of the teres. 



The deltoid is large ; its attachment to humerus is longer 

 in Hylomanes than in Momotus (|— 5). There is a separate 

 tendinous scapular slip. 



The muscular formula of leg is AXY— . 'Both. peroneals 

 are present. The deep flexor tendons of the motmots are 

 rather peculiar in their structure. It will be observed that 

 the slip to the hallux is given off before the flexor hallucis 

 joins the flexor longus. 



The first gluteal {gl. maximus) is only present in front of 

 the acetabulum. The glutceus extemus is absent as a distinct 

 muscle, but the insertion of glutceus II. extends so far round 

 the head of the femur that it may represent also the other- 

 wise missing muscle. 



The gizzard is stronger in Hylomanes than in Momotus, 

 and is almost ' ptilopine ' in section. 



The tongue is long, bifid at the apex, and worn into fila- 

 ments. In the alimentary canal the cmca are absent ; the in- 

 testines measure fourteen inches in M. Lessoni, eighteen inches 

 in M. brasiliensis. The right lobe of the liver is the larger, 

 and there is a gall bladder. 



There are two carotids. The femoral vein is abnormal. 



The syrinx has been described by Gareod and is figured 

 by him. It does not apparently differ widely from genus to 



V 2 



