114 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 



Heliopaedica xanlusi Gould, Mon. Troch., II. 1861, pi. 65 (descr.) ; Intr. Troch., 

 1801, 61. P;lliot, lUustr. New and Unfig. N. Amer. Birds, I. 1869, pL 22. 

 Bairu, Brewer, and Uidgwat, Hist. X. Amer. Birds, II. 1874, 467, pi. 47, 

 fig. 3 (descr. male and female; Cape St. Lucas). Mulsant and Verreaux, 

 Hist. Nat. Ois.-Mouches, II. 1876, 3 (descr.). Jasper, Birds N. Amer., 1878, 

 156, pi. 105, fig. 7 (Cape St. Lucas). 



B.[asillnna] xantusi Heine, Jour. Orn., 1863, 196 (crit ). Coues, Key N. Amer. 

 Birds, 4th ed., 1894, 460, 461 (descr.; Cape St. Lucas.) Hidgwat, Man. 

 N. Amer. Birds, 2d ed., 1896, 318 (descr. ; s. portion of Lower Calif.). 



[Hylocharis\ xantusi Mulsant and Verreaux, Class. Troch., 1866, 38 (characters 

 of the genus). Sharpe, Hand-list, II. 1900, 110. 



Hylocharis zantusii Gray, Hand-list, I. 1869, 151, no. 1,950. 



Heliopaedica xantusii Cooper, Orn. Cal., 1870, 365 (descr.; Cape St. Lucas). 

 Coues, Check List, 1873, 55, no. 273. 



[Heliopaedica'] xautusii CouES, Key N. Amer. Birds, 1872, 184 (descr. ; Cape St. 

 Lucas). 



Heliopaedica xanthusi Mulsant, Ann. Soc. Linn. Lyon, nouv. ser., XXII. 1876, 

 207 (Mexique). Mulsant and Verreaux, Hist. Nat. Ois.-Mouches, IV. 

 1877, 186 (synonymy). 



Coeligena xanthusi Mulsant and Verreaux, Log. cit., I. 1877, 190-192, pi. — 

 (descr.; near Cape St. Lucas). 



Basilinna xanthusi Elliot, Class, and Syn. Trocliilidae, 1879, 227 (descr.; Cape 

 St. Lucas). Eudes-Deslongchamps, Ann. Mus. Hist. Nat. Caen, I. 1881, 

 479-481 (descr.). Boulard, The Humming Bird, IV. 1894, 178, 179 (descr. ; 

 Cape St. Lucas). 



Basilinna xantusi UiDGW AY, Proc. U. S. Nat. Mus., III. 1880, 6, 319 (Cape St. Lucas) ; 

 V. 1888, 542, 543 (descr. Belding's nests and eggs from San Jose', April 28, and 

 arroyo, n. of Santiago Peak, May 9) ; VI. 1883, 158, footnote (crit. ; S. Lower 

 Calif.); Norn. N. Amer. Birds (Bull. U. S. Nat. Mus., no. 21), 1881, 33, 65, 

 75, no. 347; Rep. U. S. Nat. Mus., 1889-1890, 1891, 869-371, pi. 44 (Cape 

 district of Lower Calif.; descr. male, female, nest, and eggs; figures male 

 and female from Pierce's Rancli, and nest from San Jose'). Coues, Check 

 List, 2d ed., 1882, 78, no. 407. Belding, Proc. U. S. Nat. Mus., V. 1883, 

 542 (mountain canons of Cape Region; Cacachiles Mt. ; San Jose; descr. 

 nest from San Jose, April 23); VI. 1883, 849 (Victoria Mts.). A. 0. U., 

 Check List, 1886, 227, no. 440. Bryant, Proc. Calif. Acad. Sci., 2d ser., II. 

 1889, 289, 290 (Cape Region; Comondu, etc.) ; Zoe, IL 1891, 191 (San Jose' 

 del Cabo). Salvin. Cat. Birds Brit. Mus., XVL 1892, 255 (descr.; Agua 

 Escondida ; mountains s. of La Paz; Triunfo ; San Jose' del Cabo). Allen, 

 Auk, X. 1893, 142 (tropical type). Bendire, Life Hist. N. Amer. Birds, pt. 

 II. 1895, 226, 227 (Cacachiles Mts.; San Jose'; near Santiago Peak, etc.; 

 descr. Belding's nests and eggs). 



Xantus's hummingbird Bryant Loc. cit., 198 (Victoria Mts.). 



IBasilinna] xanthusi Dubois, Synop. Avium, fasc. II. 1900, 139 (Basse-Californie). 



Seasonal variations : — Males. The series collected by Mr. Frazar includes 

 specimens taken every month of the year excepting October and January. The 

 summer and autumn birds are by far the brightest colored, having tlie green 

 of the back quite pure ; the black of the forehead, sides of head and chin, 



