114 DENDROCOLArTID-li;. 



present int'orraatiou it embraces eight species, which, however, are 

 not in every ease easily discriminated. 



Key to the Species. 



A. Rump chestuiit-red, distinct from hack. 

 a. Throat white ; breast rufous. 



1 Lavg-er ; throat dirty white 1. timhrefta, p. 114. 



I Smaller; throat pure white 2. alhif/ularis, p. 114. 



h. Throat and breast rufous 3. mexiccmus, p. 115. 



13. Hump similar to back or barely brighter. 



c. Chest not Hammulated ; throat white. 



\ Breast rufous 4. caudacutm, p. 110. 



) Breast dull browu 5. hnmneus, p. 116. 



d. Chest flammulated ; throat-feathers white, 



edged with blackish 6. (juatemalensis, p. 117. 



1. Sclerurus umbretta. 



Myiothera umbretta, Licht. Douhl. p. 43 (1823). 



Tinactor fuscus. Max. Beiti: iii. p. 1106 (1831). 



Myothera caudacuta, Lafr. Ma;/. Zool. 1833, Ois. pi. 10. 



Sclerurus caudacutus, Bp. Consp. i. p. 210 ; Biirm. Si/sf. Ueh. iii. 

 p. 4o ; Cab. et Hein. Mus. Hein. ii. p. 25 ; Scl. Cat. A. B. p. 149 ; 

 Peh. Orn. Bras. p. 86 ; White, P. Z. S. 1882, p. 610 (Misiones, 

 rep. Arg.). 



Oxypyga scansor, Menetr. Mem. Ac. I. Sc. St. Pet. s6v. vi. Sc. Nat. 

 i. p. 520, Atl. pi. 11. 



Sclerurus umbretta, Scl. et Salv. P. Z. S. 1807, p. 574 (Lower Ama- 

 zons) ; iid. Nomencl. p. 62 ; Sale. Cat. Strickl. Coll. p. 333 ; Bed. 

 J.f. O. 1887, p. 132 (Paraguay) ; Scl. et Huds. Arg. Orn.i. p. 174. 



Above dark brown ; rump and upper tail- coverts chestnut-rufous ; 

 wing-feathers blackish, edged like the back ; tail dull black : beneath 

 rather paler ; throat white, breast rufous ; under wing-coverts pale 

 brown ; bill and feet black : whole length 7"1 inches, wing '3-6, 

 tail 2-6. 



Hab. S.E. Brazil, Paraguay, and Misiones, rep. Arg. 



a. Ad. ?t. S.E. Brazil. Purchased. 



6. Jad.sk. S.E.Brazil. Salvin-Godman Coll. 



r. Ad. sk. S.E. Brazil. Purchased. 



d, e. Ad. sk. S.E. Brazil. Sclater Coll. 



/. Jr. sk. S.E. Brazil. Riocour Coll. 



//. cT ad. sk. Misiones, rep. Arg. ( White). Sclater Coll. 



2. Sclerurus albigularis. 



Sclerurus albigularis, Szvains. B. Brazil, t. 78 (?) ; Scl. et Salv. 



P. Z. S. 1868, p. 030 (Venezuela). 

 Sclerurus canigularis, Ridc/w. Pr. U.S. N. M. xi. p. 542 (Costa Rica). 



Above brown ; rump chestnut ; tail black ; throat white, passing 

 into pale grey on the neck ; breast rufous ; belly like back, but 

 rather duller : whole length 6'5 inches, wing 3'4, tail 2-5. 



Hab. Venezuela and Costa Rica, 



