656 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
1859, 386 (Oaxaca).—Dz Oca, La Naturaleza, iii, 1875, 105; Troq. de Mex., 
1875, 36, pl. (7), fig. 25.—Bovucarp, Ann. Soc. Linn. Lyon, xxii, 1876, 22 
(Putla, Oaxaca); Notes Troch. du Mex., 1875, 9 (Putla); Gen. Hum. Birds, 
ii, 1892, 14 (Oaxaca).—Lawrence, Bull. Nutt. Orn. Club, ii, 1877, 109, in 
text (remarks on coloration of female).—Extiot, Classif. and Synop. Troch., 
1879, 118 (Oaxaca).—Satvin, Cat. Birds Brit. Mus., xvi, 1892, 391 (Oaxaca; 
Tehudntepec; Venta de Zopilote, Guerrero).—Ripeway, Man. N. Am. Birds, 
2d ed., 1896, 598. 
[Calothoraz] pulchra Gray, Hand-list, i, 1869, 135, no. 1734. 
C[alothorax] pulchra Ripaway, Rep. U. 8. Nat. Mus. for 1890 (1891), 358 (diag- 
nosis, etc.). 
C[alothorax] pulcher Heinz, Journ. fiir Orn., 1863, 207.—Harrert, Das Tierreich, 
Troch., 1900, 194. 
[Calothorax] pulcher ScuaTER and Satvin, Nom. Av. Neotr., 1873, 84.—SHARPE, 
Hand-list, ii, 1900, 139. 
Calothorax pulcher SaALvIn and GopmaN, Biol. Centr.-Am., Aves, ii, 1892, 351. 
[Callithorax] pulcher Stuon, Cat. Troch., 1897, 37. 
Amathusia (Manilia) pulchra Mutsant and VERREAUX, Classif. Troch., 1866, 86. 
Manilia pulchra. Mutsant and VERREAUX, Hist. Nat. Ois.-Mouch., ii, livr. 2, 
1875, pl. 23; iv, livr. 1, 1877, 30. 
[Manilia] pulchra Mutsant, Ann. Soc. Linn. Lyon, n. s., xxii, 1876, 226. 
T[rochilus] pulcher Ripeway, Man. N. Am. Birds, 1887, 316. 
Calliphlox mitchelli (not Trochilus mitchelli Bourcier) DE Oca, Los Colibris, Mex., 
1875, 43, pl. (9), fig. 31. 
Genus ORTHORHYNCUS Lacépéde. 
Orthorhyncus LackrbpE, Tabl. Ois., 1799, 9. (Type, as fixed by Gray, List Gen. 
Birds, 1840, 14, Trochilus cristatus Linnzus; see Oberholser, Smithson. Misc. 
Coll., xlviii, 1905, 60, 61.) 
Orthorhynchus (emendation) Bonaparte, Consp. Av., i, 1850, 83. 
Bellona (not of Reichenbach, 1852) Mutsant and VeRREAUx, Mém. Soc. Imp. 
Sci. Nat. Cherbourg, xii, 1866, 219; Classif. Troch., 1865, 75. (Type, Trocht- 
lus cristatus Linneeus.) 
Microlyssa Riper, Auk, xxi, Oct., 1904, 485. (Type Trochilus exilis Gmelin.) 
Small Trochilidee (ength about 73-95 mm.) with basal half (more 
or less) of maxilla feathered, tarsus naked, tail three-fifths to nearly 
two-thirds as long as wing, rounded, the adult male with a flat, 
pointed occipital crest, which, with forehead and crown is brilliant 
metallic green or else the crest (at least terminally) violet or violet- 
blue. 
Bill straight, terete, rather slender, longer from rictus than head, 
but the unfeathered portion much shorter than head, the frontal 
feathering advancing over base of maxilla to nearly half the distance 
from rictus to tip of maxilla in adult females, to considerably more 
in adult males; culmen rounded except basally, where contracted 
into a more or less distinct ridge; tomia smooth; mandible with the 
usual lateral median groove very distinct. Nasal operculum nar- 
row, nude, but wholly concealed by the closely appressed frontal 
feathering, which extends far anterior to nostrils, forming a distinct 
point or antia on each side of culmen. Tarsus wholly unfeathered; 
