528 ALAirDID.'E. 



Adult. General colour above uniform isabelline brown, with a 

 few duskj' shaft-lines on the feathers of the crown, faint traces of 

 similar lines being visible on the scapulars and feathers of the 

 lower back ; wings a little more sandy than the back, the median 

 and greater coverts dark brown, edged with sandy buif, whitish 

 on the extreme margins ; bastard-wing blackish brown ; primary- 

 coverts and quills blackish brown, externally ashy brown, the long 

 primaries edged with white, all the quills tipped with sandy buff, 

 the inner secondaries broadly edged and tipped with this colour ; 

 outer secondaries very broadly banded with white at the ends ; 

 upper tail-coverts white, with a tinge of sandy buff; centre tail- 

 feathers dark brown, edged with sandy buff; the remainder for the 

 most part white, blackish towards their ends, forming a broad 

 band, which diminishes in extent towards the outer feathers ; lores 

 isabelline ; feathers above the eye blackish, as well as the sides of 

 the face ; the feathers immediately above the eye white, with a 

 larger mark below the latter ; the black overspreads the ear-coverts, 

 which are sandy buff behind ; fore part of cheeks white, as well as 

 a mark on the hinder cheeks, separated by a band of black which 

 traverses the cheeks and joins the black on the sides of the throat, 

 which is white ; remainder of under surface of body white, thickly 

 mottled with large ovate centres of black on the feathers, which 

 render the abdomen almost entirely black, except for a few fringes 

 of isabelline to the feathers ; the flanks and thighs vinous isabelline 

 with dusky centres to the feathers ; lower abdomen, thighs, and 

 under tail-coverts white, tinged with isabelline ; under wing-coverts 

 and axillaries ashy black, narrowly fringed with whitish, more 

 distinctly on the edge of the wing ; quills dusky below, ashy along 

 the inner edge of the wing. Total length 7 inches, culmen 0"7, 

 wing 5*1, tail 2-4, tarsus 0-9. 



Hab. The same as that of the genus. 



a, b. Ad. sk. Algerian Sahara. Purchased. 



6. OTOCORYS. 



Type. 



Eremophila, Boie, Isis, 1828, p. 322 (7iec Humb. 180o) . . O. alpestris. 

 Phileremos, Brehm, Voff. Deutschl. p. 321 (1831, nee 



Latr. 1809) 0. alpestris. 



Otocoris, Bp. Nuovi Ann. Set. Nat. Bologtia, ii. p. 407 



(1838) 0. alpestris. 



Philamnus, Gray, List Gen. B. 1840, p. 47 O. alpestris. 



Otocoryx, LieM. Komencl. p. 38 (1854) 0. alpestris. 



Cf. Seebohn, Ibis, 1884, p. 184 ; Henshaw, Aitk, i. p. 254. 



Range. The northern portions of the old and new worlds, ex- 

 tending to Mongolia, the Himalayas, and throughout the Mediter- 

 raneo-Persic subregiou. In America it extends to Mexico and 

 reoccurs in the neighbourhood of Bogota. 



