. Catalogue of the Birds in the British Museum. 4. TACHOKNIS. 463 Key to the Sjjcc'irx. Uniform above ; tail deeply furcate. a . Lateral rectrices very sharply pointed, cousiderably more than 3 inches iu length parca and allies, p. 463. b'. Lateral rectrices less sharply pointed, considerably less than 'A inches in length. a". Glossy blackish above infumata, p. 467. b". Ashy brown above hatassieiisis, p. 466. , Above black, with a white band across the rump ; tail .^liirhtly furcate jthcenicnbia, p. 468. 1. Tachornis parva. Cypselus parvus, i/c/if. 7 er;. 7>»/W. p. .58 (1823) (Nu
. Catalogue of the Birds in the British Museum. 4. TACHOKNIS. 463 Key to the Sjjcc'irx. Uniform above ; tail deeply furcate. a . Lateral rectrices very sharply pointed, cousiderably more than 3 inches iu length parca and allies, p. 463. b'. Lateral rectrices less sharply pointed, considerably less than 'A inches in length. a". Glossy blackish above infumata, p. 467. b". Ashy brown above hatassieiisis, p. 466. , Above black, with a white band across the rump ; tail .^liirhtly furcate jthcenicnbia, p. 468. 1. Tachornis parva. Cypselus parvus, i/c/if. 7 er;. 7>»/W. p. .58 (1823) (Nubia); Streitbel, 'isis, 1848, p. 351 ; Brehm, J. f. O. 1854, Extrah. p. ; Eiipp. Sy$t. Uebers. p. 22, no. 69 (1845) ; Scl. P. Z. S. 1865, p. GOl (part.); id. J. f. O. 1867, p. 121 (part.); Heu(/I. Om. p. 144 (1869); Fi/mh ^- JIartl. Vfig. p. 131 fl870) ; Shelleti, Ibis, 1871, p. 48 ; id. B. Ecjiipt, p. 173 (1872); Shariie, ed. Layard's B. S. Afr. p. 94 (1875); Fischer, Zeitschr. yes. Orn. p. 358 (Massai-land)'(1884); Eeichen. O. 1887, p. 61. Cvpselus ambrosiacus, Temm. PI. Col. 460. fig. 2 (1828)*; Streubel, 'isis, 1848, p. 351 (1848); Cab. £/â Heine, Xlus. Hein. iii. p. 85 (1860). Cypsiurus ambrosiacus, Less. Echo 'du Monde Sav. 1843, p. 134. Mici'opus parvus, Boie, Isis, 1844, p. 165 ; F?m)i, , p. 59 (Tabora). Dendrochelidon ambrosiaca, Bp. Consp. i. p. 66 (1850). Cypselus mvochrous, Eeichen. J. f. O. 1886, p. 116 (Karema); Matschie, J. f. O. 1887, pp. 13o, 141, Micropus myochrous, Eeichen. O. 1891, p. 152 (Tabora). Adult, ilouse-colour above and below; chin aud throat lighter, ^yith dark shaft-lines; Tvings and tail darker, with a slight metallic gloss ; tail deeply furcated. Total length about 6-5 inches, wing 4-S-5*2, lateral rectrices 4 (if quite full- grown), central 1"4. / Young. In nestlings the throat is uniform; all feathers, especially on T^x\ oi * Hirundo ambrosiaca, Gm. Syst. Nat. i. p. 102
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