xcviii INTRODUCTION. 



island of Trinidad, Venezuela, New Granada, and Central America. The sexes of each species are alike in colour. 

 If any difference be observable, it is in the outer tail-feathers of the female being faintly tipped with olive-grey. 



323. Thaumatias candidus • - Vol. V. PL 292. 



Agyrtria Candida, Cab. et Hein. Mus. Hein. Theil iii. p. 33, note. 



Habitat. Guatemala and Southern Mexico. 



Mr. Salvin states that this species is " common on the Atlantic coast-region, about Yzabal, and thence one 

 day's ride into the interior. Very abundant about Coban. Many species of Humming-Birds in Guatemala extend 

 through a great range of temperature, the same species being frequently found both in the coast regions and also 

 in the more elevated districts." Mr. Taylor saw very few examples of this bird in Honduras. 



324. Thaumatias chionopectus, Gould . . . . . . . . . . Vol. V. PL 293. 



Agyrtria niveipectus, Cab. et Hein. Mus. Hein. Theil iii. p. 33, note. 



Habitat. Trinidad, Cayenne, and Guiana. 



325. Thaumatias LEucoGASTER Vol. V. PL 294. 



Cynanthus leucogaster, Jard. Nat. Lib. Humming-Birds, vol. ii. p. 149. 



Trochilus mellisuffus, Burm. Th. Bras. torn. ii. p. 343. 

 Agyrtria leucogastra, Cab. et Hein. Mus. Hein. Theil iii. p. 34. 

 Trochilus Cleopatra, Gould, MS. 

 Habitat. North-eastern Brazil, Cayenne, and the Guianas. 



326. Thaumatias viridiceps, Gould VoL V. PL 295. 



Habitat, Ecuador. 



327. Thaumatias Milleri . VoL V. PL 296. 



Agyrtria Milleri, Cab. et Hein. Mus. Hein. Theil iii. p. 33, note. 

 Habitat. New Granada. Common in the neighbourhood of Bogota. 



328. Thaumatias nitidifrons, Gould VoL V. PL 297. 



Habitat. Unknown : supposed to be Venezuela. 



329. Thaumatias c^ruleiceps, Gould. 



Thaumatias caruleiceps, Gould in Proc. Zool. Soc. part xxviii. p. 307. 

 Habitat. New Granada. Received from Bogota. 



330. Thaumatias brevirostris VoL V. PL 298. 



Trochilus versicolor, " Licht.," Nordm. Erm. Reis. Atl. pp. 3, 27, t. 1. f. 1-3. 



Hylocharis versicolor, Gray & Mitch. Gen. of Birds, vol. i. p. 115, Hylocharis, sp. 45; Bonap. Consp. Gen. Av. 



torn. i. p. 74, Hylocharis, sp. 9. 

 Agyrtria versicolor, Reichenb. Aufz. der Col. p. 10 ; Id. Troch. Enum. p. 7, pL 759. figs. 4750-51. 

 Thaumantias versicolor, Bonap. Rev. et Mag. de Zool. 1854, p. 255. 

 Agyrtria brevirostris. Cab. et Hein. Mus. Hein. Theil iii. p. 34. 



Habitat. South-eastern Brazil. 



331. Thaumatias affinis, Gould Vol. V. PL 299. 



Agyrtria affinis. Cab. et Hein. Mus. Hein. Theil iii. p. 33, note. 



Habitat. Southern Brazil ; the districts of Novo Friburgo and Minas Geraes. 



332. Thaumatias chionurus, Gould . . . . . . . . , . . . Vol. V. PL 300. 



Leucippus chionurus, Reichenb. Aufz. der Col. p. II ; Id. Troch. Enum. p. 8, pi. 780. figs. 4813-15. 

 Thaumantias chionurus, Bonap. Rev. et Mag. de Zool. 1854, p. 255. 



Agyrtria chionura. Cab. et Hein. Mus. Hein. Theil iii. p. 32, note. 



Habitat, Costa Rica. 



333. Thaumatias ALBivENTRis Vol. V. PL 301. 



Trochilus albiventris, Jard. Nat. Lib. Humming-Birds, vol. ii. p. 141. 



Agyrtria albiventris, Cab. et Hein. Mus. Hein. Theil iii. p. 32. 



Habitat. Brazil, the neighbourhood of Sta. Catharina (^Bourcier). 



This, the largest species of the genus, has the centre of the abdomen and the under tail-coverts white. 



