26 Genera of Humming Birds. 



Calothorax enicura. Gray, Gen. BircU, vol. i., p. 110. 

 Lucifer enicurus, Bon, Rev. and Magas. Zool., 1854, p. 257. 

 Calliphlox henicura, Reich, Troch. Enum., 1855, p. 10, 

 Thaumastiira enicura, Gould, Mon. Troch,, vol. iii., p. 157. 

 Myrtis enicura, Cab and Heine, Mus. Hein., 1869, t, iii., 

 p. 59. 



Amalasia enicura, Muls., Cat. Ois., m. 1875, p. 29. 



Ar)ialusia enicura, Muls., Hist. Nat. Ois., m. 1877, t. iv, 



16. 



Slender Shear-tail, Gould, Mon., Troch, vol. iii., p. 157. 



L.Amalusie a queue singuliere Muls., Hist. Nat. Ois., m. t. 

 iv., p. 17. 



Habitat. — Guatemala. 



Male. — Upperside and flanks golden-green. Chin black. 

 Throat metallic purple with blue reflections. Breast and 

 abdomen pale buff, sometimes deeper. Lateral rectrices, 

 purplish-black ; inner webs of two outer feathers narrowly 

 margined with buff. Median rectrices shining grass-green. 

 Bill black. 



Total length, 4i in. Wing, If. Tail, 2|. Culmen, |. 



Female. — I^pperside, golden-green. Median rectrices, shining 

 grass-green. Lores and ear-coverts, blackish-brown. Underside, 

 buff, a tuft of feathers (as in the males), under the thigh, white. 

 Tail feathers next the middle ones, rufous at base, then black 

 with white tips. Bill, black. 



Total length, 3 in. Wing, U. Tail, If. Culmen, f. 



This species is rather abundant in Coban, Guatemala. 



All the specimens of my collection are from that locality. 



38. DoRiCHA ELIZAE, Less and Delattre Rev. Zool., 1839, 



p. 20. 



Myrtis eliza, Reich, Aufz. der Colib., 1853, p. 13. 

 Lucifer eliza, Bon. Rev. et Magas de Zool., 1854, p. 227. 

 Calothorax eliza. Gray, Gen. Birds, vol. i., p. 110. 

 Thawmastura elizae, Gould, Mon. Troch., vol. iii., pi. 155. 

 Amalasia elizae, Muls., Cat. Ois., m. 1875, p. 29. 

 Amalasia elizae, Muls., Hist. Nat. Ois., m. 1877, t. iv, p. 20. 

 Mexican Shear-tail, Gould, Mon. Troch., vol. iii., p. 175. 



