206 



these birds, particularly the former ; and were it not for the unre- 

 stricted access to specimens which I have enjoyed through the kind- 

 ness of the authorities of these institutions, it would have been quite 

 useless for me to have attempted to work out the complicated species 

 of this group. 



Fam. Formicariid^e. 



Rostrum brevius aut vix longius quam caput, rectum aut panto 

 incurvum, mandibulce superioris apice plus minusve infiexo et 

 clente finati instructo ; gonyde recta aut leniter ascendente ; 

 rictu plerumque glabro ; naribus ovalibus, basalibus, plerumque 

 nudis, interdum membrana partim obtectis : alse breves, rotun- 

 datce, e primariis decern, secundariis novem ; remige prima 

 brevi, tertiam partem remigis longissimce hand attingente ; 

 secunda et tertia brevioribus quam quarta quinta et sexta ; 

 his fere cequalihus et longissimis : cauda e rectricibus ple- 

 rumque duodecim, non raro decern ; uropygii plumis laxis 

 elongatis : pedes plus minusve validi ; digito exteriore cum 

 medio plus minusve conjuncto : ptilosis inornata, nigra, olivacea, 

 brunnea aut schistacea, nunquam e coloribus laetis. 



Subfam. I. Thamnophilin^e. 



Rostrum forte, altum, compression, mandibulae superioris apice 

 uncinato et distincte dentato : naribus ovalibus, basalibus, 

 nudis : pedes validi, acrotarsiis et paratarsiis divisis : alee 

 breves rotundatce : cauda elongata, rotundata : statura major : 

 sexus diversi, ptilosis marium albo-nigra, fceminarum olivacea 

 et brunnea; mares macula ad inter scapulariarum basin alba 

 plerumque ornati. 



Genus I. Cymbilanius. 



Cymbilanius, G. R. Gray, List of Gen. p. 49 (1840). 



Statura modica : rostrum breve, latum, tumidum : gonyde ascen- 

 dente. 



1. Cymbilanius lineatus. 



Thamnophilus lineatus, Vieill. Nouv. Diet. hi. p. 318 ; Puch. Arch. 

 Mus. Par. vii. p. 351. 



Lanius lineatus, Leach, Zool. Misc. pi. 6. 



Thamnophilus lineatus, Gray, Gen. B. i. p. 298 ; Sclater, Edinb. 

 Phil. Journ. n. s. i. p. 231. 



Cymbilanius lineatus, Gray, List of Gen. 1840, p. 49 ; Bp. Consp. 

 p. 197. 



3 . Supra niger, albo anguste transvittatus : pileo nigro : subtus 

 albo-cinereus, nigro confertim transvittatus. 



$ . Pileo rufo : fasciis corporis superi et colore corporis inferi 

 rufescentibus. 



Long, tota 6\5, alse 3*0, caudse 3*0. 



Ilab. Cayenne ; Upper Amazon ; Ecuador, prov. Quixos. 



Mus. Brit., P. L. S. 



