480 BULLETIN 50. UNITED STATES NATIONAL MUSEUM. 
T[rochilus| violaceus Vremiort, Tabl. Enc. Méth., ii, 1822, 552. 
Tlopaza] violacea Gray, Gen. Birds, i, Dec., 1848, 110. 
Trochilus (Culampis) violaceus Lesson, Index Gen. et Synop. Troch., 1832, 
p. vii. 
(2)[Trochilus] venustissimus Gmetin, Syst. Nat., i, 1788, 490 (based on Polytmus 
mexicanus cyaneus Briss. Av. 3, p. 681, n. 9; Avicula mexicana cyaneo colore 
venutissima Seb. Mus. I, p. 102, t. 65, f. 3; etc.). 
(?)[Trochilus] cyanomelas Gur tin, Syst. Nat., i, 1788, 498 (based on Black and 
blue Humming-bird Bancr. Guj. p. 167; Latham, Syn. i, 2, p. 782, n. 50). 
[Trochilus] granatinus LatHam, Index Orn., i, 1790, 305 (based on Trochilus 
auratus Gmelin; Garnet-throated Humming-bird Latham, Synop., ii, 752, 9, 
pl. 34). 
Trochilus granatinus ViewLot, Nouv. Dict. d’Hist. Nat., vii, 1817, 350 (cites 
Trochilus auratus Gmelin, and Ois. Dorés, ‘‘pl. 4, de l’Hist. Colibris d’Au- 
debert”’). 
(?)[Trochilus] cyaneus LarHam, Index Orn., i, 1790, 309 (based on Trochilus 
venustissimus Gmelin; Polytmus mexicanus cyaneus Brisson, Orn., iii, 681, 3; 
Le Colibri blew Buffon, Ois., vi, 61; etc.). 
(?)[Trochilus] bancroftt Lataam, Index Orn., i, 1790, 317 (based on Trochilus 
cyanomelas Gmelin; Black and blue Humming-bird Bancroft, Guiana, p. 167; 
Latham, Synop., ii, 782). 
Trochilus bancrofti Viz11Lot, Nouv. Dict. d’Hist. Nat., vii, 1817, 359. 
Certhia prasinoptera SPARRMAN, Mus. Carls., fasc. 4, no. 1xxxi, 1789, pl. 81 (based 
on Souwimanga prasinoptére Vieillot, Ois. Dor., ii, 1802, 65). 
Eulampis jugularis eximius Beruerscu, Ibis, July, 1887, 294 (Nevis, Lesser 
Antilles; coll. Count von Berlepsch). 
[Eulampis jugularis] eximius Hartert, Novit. Zool., v, 1898, 520 (crit.). 
Genus COLIBRI Spix. 
Colibri Spix, Av. Bras., i, 1824,80. (Type, C. erispus Spix= Trochilus serrirostris 
Vieillot.) 
Petasophora Gray, List Gen. Birds, 1840, 13. (Type, Trochilus serrirostris 
Vieillot.) 
Petasophorus (emendation) Muusant and VERREAUX, Classif. Troch., 1866. 
[Petasophora] 8. Telesiella RetcuENBAcH, Aufz. der Colib., 1854, 13. (Type, 
Ornismya delphine Lesson.) 
[Petasophora] 7. Praxilla Reicuenpacu, Aufz. der Colib., 1854, 13. (Type, 
Ornismya anais Lesson, i. e., Petasophora iolota Gould.) 
Telesilla (emendation) CaBanis and Heinz, Mus. Hein., iii, 1860, 27. 
Delphinelia ‘‘Reich[enbach]” Bonaparte, Ann. Sci. Nat. (Zool.), sér. 4, i, 1854, 
137 (new name for Telesiella Reichenbach). 
Medium-sized to large Trochilide (length about 100-125 mm.) with 
a post-auricular tuft of violet, violet-blue, or violet-red broad and 
rounded, imbricated feathers, and the broad, rather long, tail metallic 
blue, green, or olive crossed by a subterminal band of dark metallic 
blue, green, black, or bronze-dusky. 
Bill shorter than head to decidedly longer, straight or slightly 
decurved, nearly terete but slightly depressed basally; culmen 
rounded, but contracted at base into a narrow ridge; tomia some- 
times smooth, sometimes with minute serrations near tip of maxil- 
lary tomium; mandible with a distinct longitudinal median groove 
