552 



S YS TEMA TIC S Y NOP SIS. — PICA RI^E —TRO CHILL 



throat produced into a ruff. Bill diminutive. Plumage unknown. Adult 9 '■ No peculiarity of 

 outer priinary. Above, including crown and middle tail-feather?, bright bronzy-green, inclin- 

 ing to grayish-brown on crown, and middle tail-feathers tinged with rufous on basal half, and 

 outer web edged with same nearly to tip ; other tail-feathers cinnamon-rufous on basal half, 

 then with a narrow green metallic bar, then black for 0.20, then tipped with white. Below 

 white, becoming cinnamon-rufous on sides and flanks, with a tinge of same on under tail- 

 coverts ; throat marked with spots and streaks of bronzy-green (gorget of ^ doubtless glanc- 

 ing violet, sapphire, and lilac, as in heloisce). Primaries plain purplish-dusky, as usual. 

 Length 2.95-3.00 ; wing 1.40 ; tail 0.75 ; bill 0.50. Huachuca Mts., S. Arizona, July 2, 1896 ; 

 type 153,886, U. S. Nat. Mus. Ridgw. Auk, Oct. 1898, p. 325 ; A. 0. U. Suppl. List, Auk, 

 Jan. 1899, p. Ill, No. 435 (vacated by A. heloisce). 



STEL'LULA. (Lat. stellula, dim. of Stella, a star.) Starry Hummers. No scales on 

 crown; those of throat confined to tips of the lengthened feathers, thus not forming a continu- 

 ous metallic surface, but set like stars in a fleecy, snowy bed. Tail of ^ slightly double-rounded, 

 the lateral feathers graduated, the central also shorter than the next ; middle feathers wnlike 

 back in color ; all broad, and rather widening to near the suddenly contracted ends ; outer 

 feather slightly incurved, the others ending about as acutely as a silver teaspoon. Outer pri- 

 mary simple. Bill longer than head, ordinary, but not entirely black. 9 like $ in form of 

 tail and wings. Size very diminutive. 



S calli'ope. (Gr. KaXXtoVj?, Kalliope, Lat. Calliope, one of the Muses. Fig. 370.) Cal- 

 I-IOPE Hummingbird. ^ : Crown and back golden-green. All tail-feathers dusky, with 



rufous at base and slightly pale tips. 

 Gorget violet or lilac, set in snowy- 

 white; sides of throat, and crissum, 

 white. Below, white, glossed with 

 green on sides. Bill yellowish below. 

 Length 2.75; wing 1.60; tail 1.00; 

 bill 0.60. 9 : Form of ^ ; color of 

 upper parts the same. No gorget ; 

 Fig. 370. — Stellula calliope, cf , nat. size. (From Elliot.) throat whitish with dark specks ; Other 



under parts quite strongly tinged with rufous. A white mark under eye ; bill light at base 

 below. Middle tail-feathers green, not so golden as the back, ending with dusky ; others 

 green (or gray) for a distance decreasing on successive feathers, crossed with black, tipped 

 with white to reciprocally increasing extent, and touched with rufous at base, as in several 

 allied species ; but the small size, slight rufous on tail, and extensive rufous on under parts, 

 are characteristic. Eggs 0.47 X 0.30. Mts. of whole Pacific slope, U. S. and British Colum- 

 bia ; E. to Montana, Colorado, and New Mexico ; S. into Mexico. 



CALOTHO'RAX. (Gr. kuXos, kalos, beautiful; daipa^, thorax, chest.) Lucifer Hum- 

 mers. Very different from any of the foregoing. Bill curved throughout, longer than head ; 

 but nasal scale covered as usual by feathers, and bill black. Tail deeply forked ; lateral tail- 

 feather shorter than next, and in our species filiform and acicular. Tarsi partly plumose. 

 Sexes unlike. 



C. lu'cifer. (Lat. Xwci/er, the light-bearer ; ?Ma;, light, /ero, I bear. Fig. 371.) Lucifer 

 Hummingbird. Cohuatl. ^ : Above, bronzy-green ; gorget lilac-purple ; three outer tail- 

 feathers purplish -dusky. Below, white, bronzed with green on flanks. Bill black. Length 

 3.50; wing 1.50; tail 1.35; bill 0.75. 9: Above, like ^, but browner on head; no gorget; 

 under parts rufous ; belly white. Middle tail-feathers bronzy-green ; next green tipped with 

 black ; rest rufous basally, then crossed with black and tipped with white. Tail not so deeply 

 forked as in ^. The 9 ™ay he known by the curved bill. Mexico to southern Arizona and 

 western Texas; introduced into our Fauna upon a 9 wrongly identified as "Doricha enicura." 

 (See Bull. Nutt. Club, ii, 1877, p. 108.) 



