'1' 



'ii^m BTELOIDOPTERYX. 



315 



2.25, depth of fork, .15 ; diffHience of primaries, 2.28 ; length of bill from 

 forelieail, .40, from nostril, 24, along gap«, .5(5, wiilth of gape, .43 ; tarsus, .45 ; 

 uiid.llH toe and claw, .57, claw alone, .19 ; hind toe and claw, .41, claw alone, .16. 



The differences between this species and rv.ficollis, the South 

 Araericau representative, are given below.' 



I stelgidopteryz ruficollis. 



Hirundo ruJicoUia, Vieill. Nouv. Diet. XIV, 1817, 523.— In. Encycl. 



Meth. II, 525 (Brazil).— Co/^/e ruJicoUU, Sclater, P. Z. S. 1860, 



292.- In. Catal. 1861, 41, no. 249. 

 Biriimlo JluvitjuHlra, Vikim,. Nouv. Diet. XIV, 1817, 534.— Ih. Encycl. 



Meih. 11, 531 (based on Azara, as below, from Paraguay). — Coti/le 



fnviijastra, Boik, Isis, 1844, 170.— Bon. "Consp. 1850, 312.— Bdrm. 



Uebeid. Ill, 1S56, 144. 

 Hirundo hortensts, Light. Verz. Doubl. 1823, 57 (Bahia).— Temm. PI. 



Col. 161, 2. 

 /riV«H«fyyi.'(7M'"»"(«, Maxim. Beit. Ill, 365 (Brazil). 

 IJirundo Jlnviventer, Lesson, Traite d'Orn. I, 1831, 269 (Brazil). 

 Uolondrina de la vientre amuriUazo, Azaka, Apuut. II, 1805, 512. 

 n»h. La Plata region and Brazil. (Farther north and in the Andes re- 

 placed by uropygialis f) 



(No. 32,742, 9 .) Above, with sides of head, smoky brown ; darker on the 

 head, becoming bensibly paler on rump, especially on the edges of the featber.s, 

 but still not in any decided contrast with the lower part of back -^ the primary 

 quills and tail feathers dark dusky brown ; the secondaries whitish along 

 their outer edges towards the end and at the tip. Chin and throat reddish 

 fulvous ; breast and sides of body, with inside of wings, brownish-gray ; the 

 median region of body white, tinged with sulphur yellow. Under tail coverts, 

 fiom vent, pure white, with a alight gloss of yellow (less than on belly), the 

 longes* feathers abruptly tipped with the color of the tail (for nearly half an 

 inch), the shafts of some others dusky. Feathers of tibia brown, tipped with 

 yellowish-whita. 



(No. 32,742.) Total length, 6.50 ; wing, 4.55 ; tail, 2.50, depth of fork, .13 ; 

 difference of primaries, 2.10 ; length of bill from nostril, .21, along gape, .55, 

 width, .42; tarsus, .40; middle toe and claw, .52, claw alone, .18 ; hind toe 

 aud claw, .32, claw alone, .15. 



The upper parts are colored much as in C. serripennis, rather darker per- 

 haps, and the rump rather paler, forming a greater contrast. The whitish 

 edging of the secondaries is more decided. Beneath, however, the colors are 

 decidedly dilfereut. Tlie tail is much longer ; the feet and bill smaller. 



il 



' 'I' 



- 5i 



.. 'h: 



Locality. 



Brazil. 



When 

 Collected. 



Received from 



July, 1*59. 



IT. S Expl. Exped. 

 Verrt'RUX. 

 Capt. T. J. Fame, 

 Expl. of Parana. 



Collected by 



T. H. Poalo. 



Clir. Wood. 



