TROGONES 



203 



Of the muscles of the thigh which Professor Gabeod 

 regarded as of importance there are present the femorooaudal 

 and the semitendmosus, the accessories of both being absent. 

 The femorocaudal is proportionately larger than in almost 

 any bird. There is no glutcsus primus. The obturator 

 internus is small and oval. The singular arrangement 

 of the d-eep plantar tendons 

 is used in the definition of 

 the family. The two tendons 

 concerned each supply two 

 digits, this arrangement being 

 unique. In the fore limb 

 there is no biceps slip to the 

 patagium. The patagial muscles 

 and tendons are much compli- 

 cated ; they have been figured 

 by Gaeeod for Trogon puella. 

 The very powerful tensor 

 brevis muscle runs as a muscle 

 nearly to the extensors of the 

 fore arm ; it has a short broad 

 tendinous insertion on to the 

 fascia of the outer surface of 

 the arm, and this is specially 

 developed, a line running back 

 to the humerus, as in the 

 Passeres (see p. 172). Deeper 

 than this are two parallel 

 tendons : of these the one nearer the humerus terminates 

 exactly .like the single one of the Passeres ; the other tendon 

 ends as in the Piei, elsewhere described. There is no expansor 

 secandarioruna. 



The tongue of the trogons is short and three-sided. It 

 is pointed in front. The left lobe of the liver is a little the 

 smaller. Among G-arbod's notes are the following measure- 

 ments of the intestines and the caeca in three species of 

 trogons, which we reproduce : — 



Fig. 95. — Skull as CoUus castano- 

 notus. Ventbal Aspect. (Aeteb 

 Gareod.) 



