275 



CEKTHILAUDA DESEETOKUM. 



(CURVE-BILLED LARK.) 



Alauda desertorum, Stanley in Salt's Trav. to Abyss. App. p. lx. (1811). 



Alauda bifasciata, Licht. Verz. Doubl. p. 27 (1823). 



Certhilauda bifasciata (Licht.), Swains. Classif. of B. ii. p. 293 (1837). 



Alaemon desertorum (Stanl.), Keys. & Bias. Wirbelth. Eur. p. xxxvi. (1840). 



Thinotretes, Gloger (A. bifasciata, Licht.), Naturg. p. 266 (1842). 



Saxicola pallida, Blyth, Journ. As. Soc. Beng. 1847, p. 130 (nee Riipp.). 



Certhilauda desertorum (Stanl.), Bp. Conspect. Gen. Av. p. 246 (1850). 



Certhilauda meridionalis, A. E. Brehm, Journ. fur Orn. 1854, p. 77. 



Certhilauda salvini, Trist. Ibis, 1859, p. 57. 



Certhilauda dorice, Salvad. Att. R. Accad. Sc. Torino, 1868, p. 292. 



Alcemon jessii, Finsch, P. Z. S. 1869, p. 430. 



Bifasciated Lark, Curve-billed Lark, English ; Alouette bifasciee, French. 



Figurw notabiles. 

 Temminck, PI. Col. 393 ; Riipp. Atl. tab. 5 ; Gould, B. of Eur. pi. 168. 



6 ad. supr& pallide rufescenti-isabellinus, capite et nucha, vix griseo tinctis, uropygio pallidiore : primariis, 

 nisi in parte basali, nigricantibus : secundariis albis, centraliter valde nigricante fasciatis : tectricibus 

 alarum minoribus pallide fuscis, isabellino marginatis, majoribus fiiscis albo terminatis : cauda, nigra, 

 rectricibus duabus extimis in pogonio externo albis, duabus mediis dorso concoloribus sed centraliter 

 saturatioribus, rhachibus nigricantibus : corpore subtus albo, pectore summo nigricante guttato et vix 

 grisescente isabellino lavato : superciliis albidis : facie laterali ante, pone et infra oculos nigricante 

 notato : tectricibus alarum inferioribus et axillaribus albis : rostro pallide fusco : pedibus grisescenti- 

 albidis : iride fusca. 



$ mari similis. 



Adult Male (Algeria) . Upper parts pale rufescent isabelline, with a greyish tinge on the head and nape ; 

 scapulars slightly more rufescent than the back ; primary quills blackish, except at the extreme base, 

 where they are white, the white increasing in area on the inner ones ; innermost primary tipped with 

 white; secondaries white, with a broad blackish band across the centre; larger wing-coverts dark 

 brown, tipped with white, smaller ones dull brown, broadly margined with isabelline ; rump and upper 

 tail-coverts much paler than the rest of the upper parts, the latter being margined with whitish ; central 

 rectrices sandy isabelline with darker centres, the shafts of the feathers blackish, remaining rectrices 

 blackish brown, the outermost having the outer web white ; underparts white, on the breast slightly 

 washed with grey and spotted with blackish brown ; sides of the face before, behind, and below the eye 

 marked with black, over the eye a tolerably distinct whitish streak; beak pale brown; legs greyish 

 white; iris brown. Total length nearly 8 inches, culmen 1*15, wing 4 - 7, tail 3 - 55, tarsus L3. 



Female. Similar to the male. 



3c2 



