248 FOEMICARTIT),!!;. 



8. Herpsiloclimus frater. 



Ilerpsilochmus frater, Scl. et 8ah. P. Z. S. 1880, p. 159 (Ecuador). 

 Herpsiloclimus rutimargiuatus, Scl. at Salo. P. Z. S. 18(38, p. 028 

 (Venezuela). 



Similar to B. rvjimnrginafus, but back tinged with olivaceous and 

 with a very slight black and white dorsal spot : wing-margins 

 chestnut. 



JIab. Ecuador, Colombia, and Venezuela. 



a, b. (^2 fid. sk. Sarayacu, Ecuador Salvin-Godman Coll. ) /rp .• 



(Buckle;/). Ptlfe 



c,d. cJ $ ad. sk. Sarayacu, Ecuador Sclater Coll. f „,,„,;„„ \ 



(Buckley). ) ^P^"^'^-^ 



e. (S ad. sk. Bogota. Salviu-Godman Coll. 



/, g. 2 ad. .sk. Bogota. Sclater Coll. 



h. S ad. sk. San Esteban, Vene- Salvin-Godniau Coll. 



zuela (Goering). 



13. FORMICIVORA *. „ 



Type. 



Formicivora, Sw. Zool. Journ. ii. p. 145 (1825) F. squaniata. 



Ellipura, Cab. Wiegm. Arch. xiii. pt. i. p. 228 (1847) . . F. ferrugiuea. 

 Microrhopias, Scl. Cat. A. B. p. 182 (18G2) F. quixensis. 



This is a fairly well-defined group of about fifteen species, recog- 

 nizable by their mostly small size, slender bills, and lengthened 

 tails, in which the rectrices are in some cases reduced to ten in 

 number. The Formicivorce are spread over all the area occupied by 

 the subfamily. 



Key to the Species. 



A. Upper surface not wholly black ; tail longer, 

 more rounded. (Group of F. grisea.) 

 a. Throat, breast, and middle of belly black. 

 a'. Flanks white. 



j Superciliaries narrower 1. grisea, p. 249. 



I Superciliaries broader 2. inte^-media, p. 250. 



I'. Flanks rufescent 3. nifatra, p. 250. 



5. Throat and neck black ; belly white ...... 4. strigilata, p. 251. 



c. Throat white ; breast black 5. speciosa, p. 251. 



d. Throat and breast ferrngiuous 6. ferruginea, p. 252. 



* Eefer also to :— 



1. F. leiicophthalma, Pelz. Orn. Bras. pp. 83, 155 (Brazil). 



2. F. ruficauda, Pelz. I. c. (Brazil). 



3. F. melanogasfcr, Pelz. op. cit. pp. 83, 154 (Brazil). 



[I have examined what appeal's to be a specimen of this species, Mus. 

 Kiliens. {Tichn) ex Goyaz. It seems to be nearest to F. grisea, but is 

 without white on the flanks.] 



4. F. virgata, Lawr. Ibis, 1863, p. 182 (Panama). 



