i8o FIELD MUSEUM OF NATURAL HISTORY ZOOLOGY, VOL. XIII. 



Polyerata reini BERLEPSCH, Omith. Monatsb., 1897, p. 58 (western Ecuador). 

 Agyrtria rosenbergi reini HARTERT, Nov. Zool., V, 1898, p. 496. 



Range: Western Colombia and northwestern Ecuador. 

 5: Colombia 2; Ecuador (Rio Tapero i and Ecuador 2). 



Polyerata cyanotincta Gounelle* BLUE-SPOTTED HUMMING BIRD. 



Polyerata cyanotincta GOUNELLE, Rev. Franc. d'Ora., No. 2, 1909, p. 17, pi. i 

 (Bogota). 



Range: Colombia. 



*Polyerata decora Salvin. CHARMING HUMMING BIRD. 



Polyerata decora SALVIN, Ann. & Mag. Nat. Hist., VII, 1891, p. 377 (Volcan de 

 Chiriqui, Panama); Id., Cat. Bds. Brit. Mus., XVI, 1892, p. 238; RIDGWAY, 

 Bull. U. S. Nat. Mus. No. 50, V, 1911, p. 525. 



Range: Panama and western Costa Rica. 



4: Panama (Chiriqui) 2; and Costa Rica (Boruca) 2. 



Genus URANOMITRA b Reichenbach. 



Uranomitra Reichenbach, Aufz. d. Col., p. 10, 1853 (Type Trochilus franciac 

 Bourcier and Mulsant). 



*Uranomitra franciae (Bourcier and Mulsant). FRAN CIA'S EMERALD. 



Trochilus franciae BOURCIER and MULSANT, Ann. Sc. Phys. et Nat. Lyon, IX, 

 1846, p. 324 (Cauca Valley, Colombia). 



Cyanomyia franciae GOULD, Mon. Trochil., V, 1860, pi. 287; SALVIN, Cat. Bds. 

 Brit. Mus., XVI, 1892, p. 199. 



Uranomitrafranciae ELLIOT, Syn. Trochil., 1879, p. 197; HELLMAYR, Proc. Zool. Soc. 

 Lond., 1911, p.ii82;CHAPMAN,Bull.Am.Mus.N.H., XXXVI, 1917^.287 (Nu- 

 merous localities in subtropical zone of western and central Andes, Colombia). 



Range: Mountains of Colombia. 



15: Colombia (Rio Dagua 2, Bogota i, and "Colombia" 12). 



Uranomitra cyaneicollis (Gould). BLUE-NECKED EMERALD. 



Trochilus cyaneicollis GOULD., Proc. Zool. Soc. Lond., 1853, p. 61 (Peru). 

 Cyanomyia cyaneicollis BONAPARTE, Rev. Zool., 1854, p. 254; GOULD, Mon. 

 Trochil., V, 1861, pi. 288; SALVIN, Cat. Bds. Brit. Mus., XVI, 1892, p. 199. 

 Uranomitra cyaneicollis ELLIOT, Syn. Trochil., 1879, p. 198. 



Range: Peru. 



3: Peru (near Balsas). 



Polyerata cyanotincta GOUNELLE: This species has a general resemblance to 

 P. amabUis GOULD, but differs chiefly in having the chin, throat and breast with 

 cobalt-blue scale-marked feathers, which shows a deeper tint with some purplish 

 reflection when viewed from the side; under tail coverts bluish slate (not grayish 

 black); tail blackish blue; the middle rectrices blackish blue (not greenish bronze). 

 Wing, 43; tail, 22, bill, 19 mm. 



b A questionable Genus, doubtfully separable from Amazilis. In this connection, 

 cf. Ridgway, Bull. U. S. Nat. Mus. No. 50, V, 1911, pp. 406-407. 



