PICI 191 



common with each other and with the hepatic duct into the 

 intestine. There are two pancreatic ducts in this species, 

 and one of them is pecuHar in having a distinct, though 

 short, diverticulum near to its intestinal orifice. 



The tongue is long, horny, and feathered along the 

 margins. 



The toucans as a rule possess only one carotid, the left. 

 But in an example of Bh..dicolorus Forbes found both 

 carotids present. The second is much smaller ; it is quite 

 pervious, however, and blends with the left at the entrance 

 to the neck. 



The syrinx is in some respects peculiar. As in some 

 other picarian birds, the last three or four tracheal rings are 

 fused to form a bony box, which is marked by a deep furrow 

 mesially and behind. This region of the syrinx is much 

 compressed antero-posteriorly. The intrinsic muscles are 

 attached to the upper part of the box. 



The first bronchial ring is ossified in front ; posteriorly 

 each half is L-shaped and fibrocartilaginous. The descending 

 limbs of each L are in the same straight line as the trachea ; 

 they are closely applied to each other, but really separated 

 by a membrane of very short extent, the bronchidesmus. 

 They are in close contact with the inner end of the ossified 

 half of the ring. At the lower end of these cartilaginous 

 pieces is a separate rounded bit of cartilage, which is simi- 

 larly connected with the second ring. 



The tensores patagii are very simple. The tendon of the 

 brevis is quite imdivided. Each has a tendinous slip from 

 the pectoralis. There is a oucullaris patagialis. 



The deltoid is particularly long in its insertion. 



The anconcBus has no humeral attachment. It arises 

 by fleshy fibres (not a Y-shaped tendon) from the scapula. 

 The glutmus maximus extends below the acetabulum ; there 

 is no glutcBus externus. 



The muscle formula of the leg is AXY — . The semitendi- 

 nosus is attached to the leg bone separately from the semi- 

 membranosus ; it has also a tendinous insertion on to gastro- 

 cnemius. The deep plantar tendons are as in Megalcema. 



