TROGLODYTIDJE. 539 



i 2 . Tail longer than wing, much rounded. 



c 1 . Exposed culmen decidedly shorter than middle toe, without claw. 



d 1 . Plumage varied, the wings and tail distinctly (often conspicuously) 

 marked with white. 



Gonys straight, or sometimes even slightly concave ; tarsal 



scutellsB very distinct Mimus. (Page 541.) 



d 2 . Plumage plain, the wings and tail without white markings. 



e l . Larger (wing more than 4.00, tail 5.00, or more) ; gonys 

 straight ; tarsal scutellse very distinct. 



Color plain brown above, dull whitish beneath. 



Mimodes. (Page 542.) 



e 2 . Smaller (wing less than 4.00, tail less than 4.50) ; gonys appre- 

 ciably convex ; tarsal scutellse indistinct (sometimes nearly 

 obsolete). 



f 1 . Exposed culmen shorter than distance between tips of 

 longest and shortest tail-feathers; color slate-gray 

 above, with black cap and tail, ash-gray below, with 

 chestnut under tail- coverts. 



Galeoscoptes. (Page 542.) 



/ 2 . Exposed culmen longer than distance between tips of 

 longest and shortest tail-feathers ; color uniform glossy 

 violet-black, the wings and tail more bluish or green- 

 ish Melanoptila. 1 



c 2 . Exposed culmen equal to or longer than middle toe, with claw. 



d l . Above plain grayish blue, the lores and ear-coverts deep black ; be- 

 neath grayish blue or pure white Melanotis. 2 



d 1 . Above some shade of brownish, grayish, or dusky ; beneath, nei- 

 ther grayish blue nor pure white. 



e l . First quill very little, if any, longer than tarsus (sometimes 

 shorter); throat and middle of breast neither red nor 



rufous Harporhynchus. (Page 543.) 



e 2 . First quill longer than tarsus and middle toe combined ; throat 

 and median lower parts rose-red (in male) or rufous (in 



female) Rhodinocichla. 3 



a 2 . Eictal bristles obsolete, or very indistinct ; inner toe united at base to inner toe 

 by at least half the basal phalanx ; wing less than 3.50. (Subfamily Troglo- 

 dytidce.} 

 b l . Wing more than 3.00 Campylorhynchus. (Page 547.) 



1 Melanoptila SCLATER, P. Z. S. 1857, 275. Type, M. glabrirostris SCL. (Hal., coast of Yucatan and Hon- 

 duras.) 



J Melanotis BotfAP., Consp. i. 1850, 276. Type, Orpheus cxrulescens SWAINS. Two species : (1) M. cseru- 

 lescens (Sw.), of Mexico, which is grayish blue beneath, as well as above, and (2) M. hypoleucus HARTL., of 

 Guatemala, which is pure white beneath, except along sides and on under tail-coverts. 



8 Rhodinocichla HARTL., Journ. fur Orn. 1853, 33. Type, Furnarius roseus LESS. Two species : (1) R. 

 rosea (LESS.), from Costa Rica, Colombia, and Venezuela; and (2) B. schintacea RIDGW., from western 

 Mexico (Mazatlan, Colima, etc.). 



