TIJIELIID^. 



Group I. THAMNOBI^E. 



In this group are contained the genera and species of Chat- 

 Thrushes and their allies, which were excluded from the Turdidce 

 by Mr. Seebohm on account of their larger and more Timeliine first 

 primary. I would suggest, however, that the value of this large first 

 primary is entirely counterbalanced by others of greater importance, 

 such as the spotted plumage of the young &c. — points on which Mr. 

 Seebohm lays great stress as characteristic of Thrushes. In ray 

 opinion, all the birds included in this group would occupy a more 

 natural position at the end of the Turdidce, leading on, of course, 

 towards the true IHmeliidce. 



Keij to the Genera. 



a. Bill very stout, much higher than broad at 



nostrils. 

 a'. Tarsus rather coarsely scutellated .... 1. Turnagea, p. 4. 

 b'. Tarsus entire, or with a subtermiual 



scute 2. Myiophoneus, p. 6. 



b. Bill longer and more slender, never higher 



than it is broad at nostrils. 

 c' . Wing decidedly longer than tail. 



a". Tarsal envelope entire or with merely 

 a subterminal scute *. 

 «'". Tarsus longer, the outstretched 

 feet reaching to the tip of the tail, 

 or beyond it. 

 a*. Wing rather short, falling short 

 of tail by as much as or mure 

 than the length of the tarsus. 

 a'. First primary very large, more 

 than half the length of the 



second 3. Callbne, p. 14. 



fe'. Fu'st primary narrow and 



rather pointed, not half the 



length of the second. 



a^. Rictal bristles evident ; bill 



rather stout, the culnieu 



equal to the middle toe and 



claw 4. Penthol^a, p. 17. 



¥. Bill more slender, culmen 

 less than middle toe and 

 claw ; rictal bristles less 



perceptible 6. Pinarocuroa, p. 19. 



c^. Bill stout, the culmen less 

 than the middle toe and 



claw; rictal bristles very [p. 21. 



strong 6. Pseitdocossyphus, 



* It is not easy to tell whether birds of this group have or have not a plain 

 tarsus; many of them seem to have a scutellated tarsus when they are young, 

 and a plain one when adult. 



