138 COTINGID^. 



All the variations in the wings of the various species of Cotinga, where they occur, 

 appear to be found in the male alone, the wings of the females being of normal 

 structure, except, perhaps, in the female of C. ridgwayi, in which (we have only one 

 immature specimen) the first and second primaries are abnormally narrow, though 

 much less so than in the adult male. 



Using the structure of the primaries as a chief character with others whereby to 

 define the members of the genus Cotinga, the following key may be useful : — 



Clavis specierum Cotingarum. 



a. Remigibus abnormalibus irregulariter abbreviatis aut attenuatis; 



coloribus nitidis cseruleis et purpureis. 

 a! . Remigibus subtus omnino nigris. 



c". Remige 4° quam 3"^ et 5"* breviore. 



a'". Remigibus 1° et 2° angustatis acutis, 2° et 3° longissimis. 

 a*. Pectore et abdomine medio rubro-purpureis, fascia 



peetorali cserulea nulla 1. ccerulea. 



V". Fascia peetorali caerulea 2. cincta. 



W. Remigibus 1° et 2° fere normalibus, vix attenuatis aut 



acutis, 2° longissimo 3. amabilis. 



b". Remigibus 4° et 5" fere sequalibus, 1" et 2" attenuatis sed baud 

 acutis, 2° quam 1^ angustiore. 

 c"'. Gulae plumis ad basin fuscis, fascia transversa mediana 



nigra notatis 4. nattereri. 



d'". Gulae plumis fascia alba nee nigra transnotatis .... 5. ridgwayi. 

 V. Remigibus subtus ad basin in pogonio intemo plus minusve albis. 

 c". Corporis plumis caeruleis ad basin nigris j remigibus 1°, 2°, 

 3°, et 4° fere aequalibus, duobus exterioribus ad apicem 



attenuatis 6. cayana. 



d". Corporis plumis caeruleis ad basin albis in medio rubro-purpureo 

 transfasciatis ; remigibus 2°, 3°, et 4° fere sequalibusj 1° bre- 

 viorcj omnibus ad apicem attenuatis, 3° multo magis quam 

 reliquis 7. maynana. 



b. Remigibus normalibus baud irregulariter abbreviatis aut attenuatis; 



coloribus plerumque nigro et albo 8. porphyrolcBtna. 



1. Cotinga amabilis. 



Cotinga amabilis, Gould, P. Z. S. 1857, p. 64, 1. 123 ' ; Scl. & Salv. Ibis, 1859, p. 125 ' ; Salv. Ibis, 

 1860, p. 100 ' ; Scl. P. Z. S. 1860, p. 252 ' ; Cat. Birds Brit. Mus. xiv. p. 354 ' ; Lawr. Ann. 

 Lye. N. Y. vii. p. 473 " ; ix. p. 117 '. 



Ampelis amabilis, Cab. J. f. Orn. 1861, p. 253*. 



Nitide casrulea ; capite summo eyanescentiore ; alls et Cauda nigris extrorsum cseruleo limbatis ; gula et abdomine 

 medio vinaceo -purpureis ; pectore et hypochondriis dorso concoloribus ; tectricibus caudse supra et subtus 

 elongatis, fere ad finem rectricum medianarum extensis. Long, tota 7"1, alfe 4-6, caudoe 2-5, rostri a 

 rictu 0-75, tarsi 0*8. (Descr. maris ex Choctum. Mus. nostr.^ 



