1 68 Genera of Humming Birds. 



Throat, abdomen, and undertail-coverts white. Breast and 

 flanks shining green. Slightly smaller than the male. 



Genus LXX. Aithurus, Cab. and Hein.,Mus. Hein., i860, 

 vol. iii., p. 50. 



Phaethornis, Less., Tab. Esp., Ois. Mou., 1829, p. 18. 



POLYTHMUS, Less., Ind. Gen., Syn. Gen., Troch., 1832, p. 16. 



TroCHILUS, Gray, Gen. Birds, 1840, p. 14. 



Type : T. po/ytmus, Linne. 



Bill curved, wide at base, longer than the head. Rectrices 

 narrow and pointed. Lateral, next the outermost one 

 lengthened nearly three times that of the others. Tail deeply 

 forked. Head crested, with elongated feathers on each side. 

 Sexes unlike. 



Habitat. — Jamaica. 



243. Aithurus polytmus, Lin., Syst. Nat., 1766, vol. i., 



p. 189. 



Boiirdonneiir dn Mango, a longue queue, Abin., t. iii., p. 20, 

 p. 49, fig. a. 



. Oiseaii Mouclie a longue queue noire, Sonn., Ed. de Buff., 

 Hist. Nat., t. xvii., p. 215. 



Mellisuga Jamaicensis, Briss. Ois., t. iii., p. 729. 



Mellivora avis nia.xima, Sloane, Journ., vol. ii., p. 309, 

 fig- 4- 



Trochilus polytmus, Lin. Syst. Nat., Edit. 10, t. i., p. 120. 



Black-capped Hummino-hird, Lath., Gen. Syn., vol. ii., 

 p. 748. 



Colibri a fete noire, Vieill., Ois. Dor., t. i., p. 121, fl. 67. 



Ornismya cephalatra, Less., Ois. Mou., p. 78, p. 17. 



Long-tailed black-capped Humming-bird, Edwards' Birds, 

 vol. i., p. 34. 



Trocliilus maria. Hill., Ann. Mag. Nat. Hist., 1849, vol. iii., 

 p. 258. 



Polytmus cephalatra, Bon., Consp. Gen. Av., 1850, p. 72. 



Black-capped Hximmin^-bird , Gould, Mon. Troch., vol. ii., 

 p. 98. 



