136 TYKANNID.E. 



1 1. Tyraimiscus leucogonys. 



Tyranniscus leucogonys, Scl et Salv. P. Z. S. 1870, p. 843; lid. 

 Nomencl. p. 48. 



Above olive ; cap dark cinereous, narrow front and eye-region 

 whitish ; wings blackish ; coverts and secondaries narrowly margined 

 externally with yellow ; tail brown with olive margins : beneath 

 yellow ; throat and breast more greyish ; under wing-coverts pale 

 yellow ; upper mandible brown, lower pale flesh-colour ; feet dark 

 brown : whole length 4 inches, wing 2'4, tail 1"7. 



Hab. Colombia. 



I am a little doubtful about the correct position of this species, 

 which is at once recognizable by its pale lower mandible. 



a, b. Ad. sk. Bogota. Sclater Coll. (Type of the species.) 



51. ELAINEA*. 



Type. 

 Elaenea, Sund. K. Vet.-Ak. Handl. 1835, p. 89 (1836) .... E. pagana. 



This is one of the most numerous genera of the Tyrannidce, and 

 perhaps the most difficult to deal with satisfactorily. The present 

 arrangement is nearly the same as that adopted in previous papers 

 on this group, and I am still unable to suggest a better one, though 

 I find that some of the species hitherto referred to Sect. A are 

 merely females or young of species of Sect. B. 



Elainece may usually be recognized by their dull olive colour, 

 slightly crested head, and compressed bill, with but few traces of 

 rictal bristles. They are spread all over the Neotropical Region. 



Key to the Species. 



A. With a more or less concealed vertical spot. 

 a. Vertical spot white. 



a'. Throat greyish white ; belly yellowish. 



I Smaller : breast lighter i £• ?% (ma > P- 13 J' 



1 ° j 2. rtdleyana, p. 139. 



I Larger : breast darker 3. gigas, p. 140. 



b' . Under surface greyish white. 



a". Middle of belly uniform 4. martinica, p. 141. 



b". Middle of belly clear white. 



a'". Larger : sides olivaceous : 



) upper surface olivaceous. 5. albiceps, p. 141. 



) upper surface grey 0. strepera, p. 143. 



* See articles, P. Z. S. 1861, p. 406, and 1870, p. 834, on this genus, of which 

 the following species are unknown to me : — 



1. E. spectabilis, Pelz. Orn. Bras. p. 176 (Brazil). 



2. E. cincrca, Pelz. Orn. Bras. p. 180 (Brazil). 



3. E. incompta, Cab. et Hein. Mus. Hein. ii. p. 59 (Venezuela). 



4. E. gracilis, Tacz. Orn. Per. ii. p. 271 (Peru). 



5. E. semiflava, Lawr. Ann. L. N. Y. viii. p. 177, ix. p. 89 (Veragua). 



6. E. cinerascens, Eidgw. P. U. S. N. M. vii. p. 180 (New Providence I.). 



