( 262 ) 



kept distinct, the Hnmaytlia ijird lias to go witli the former. In fact, on comparing 

 three adults from Bolivia with Mr. Hoffmanns' specimen, I find that they agree 

 in having the forrnginons colonr below restricted to the throat and forenerk, and 

 the abdomen of a rather pale rufescent brown ; while in skins from Pern and Teffe 

 the ferrnginons is exieuded farther down the middle of tlie chest, and the abdomen 

 is decidedly deeper rnfons brown. Adults of both forms show the cheeks and 

 ear-coverts uuilbrra deep ferrnginons. 



Leucolepis modtilatof salrini (Sharpe),* from Eastern Ecnador ( Hio Jsapo") and 

 S.E. Colombia (Cnembi, Rio Putuma_vo),t differs from both by having the cheeks 

 and ear-coverts deep olive-brown without any ferruginous, and by its darker 

 wings. In the e.xtent of the ferruginous colour on the lower parts it resembles 

 L. m. riifogularis.'] 



0. Leucolepis modulator griseolateralis (Hidgw.). 



Cyphorhinm griseolateralin Ridgway, Pror. U.S. Xnl. .M'lx. x. 1887. p. 518 (1888. — Diamantina 

 near Santarem, Rio Tapajoz). 



No. 946. c? ad., Maruins, Rio Machados, L'7. vi. I'.iijs.— Wing 6;? ; tail (moulting) 

 34 : bill ITi mm. 



Nos. 174, 348, 428. 6 i ad., 6 imm., (Vilama, 0. vii., T, 10. viii. I'.IOT.— Wing 

 65—67 ; tail 37—30 ; bill 17— 17i mm. 



Nos. 175, 352, 427. ? ? ad. and imm., Calaina, (i. vii., s, 10. viii. 10M7.— Wing 

 62—64; tail 34-36; bill 1.5J— 17 mm. 



No. 962. ? juv., Maruins, 30. vi. 1908.— Wing 62 ; tail 34; bill 17 mm. 



" Iris brown, feet dark or blackish brown, bill black, below grey.'' 



This series differs from L. m. modnlafor by the clearer brown, less rufescent 

 npper parts, and earthy brown or ashy (instead of dark olive-brown) sides of the 

 neck, breast, and abdomen. Moreover, the superciliary stripe, instead of being 

 uniform deep ferruginous, is buffy white in its posterior jiortion, and the wiiigs are 

 shorter. - Like L. m. modulator, the ferruginous colour is confined to the throat and 

 foreneck ; the cheeks and ear-coverts are ferruginous, with some slight brownish 

 fctreaks near the npper border of the auricular patch. 



The specimens tally well with Ridgway 's description, excejit that in none of 

 them is the " hindneck tinged with greyish," nor can the lower portion of the 

 auriculars be termed " dull light greyish, very indistinctly striped with darker." 

 These slight discrepancies may, however, disappear on actual comparison. 



The series presents a considerable amount of variation, chiefly in the coloration 

 of the lower parts. Nos. 040 and 348 have the breast and abdomen dull ashy, 

 passing into dingy whitish grey in the middle of the chest, and very slightly tinged 

 with pale brownish on the flanks. In the other specimens the belly is pale earthy 

 brown, with the flanks more decidedly olive-brown, and the middle of the chest 

 sometimes paling to dull bnffy. The under tail-coverts are generally bright 

 cinnamon-rufous, but in two skins (Nos. 348 and 427; scarcely more rufescent than 

 the abdomen. The intensity of the feirngiuous colour of the throat, forepart of 

 the crown, etc., is rather variable ; the brown of the back is sometimes shaded with 

 olive, etc. The maxilla is black, the mandible yellowish. 



The young bird (Xo. 062) differs very markedly from modnlator juv. (e.t 



• ri/phorkinux salvini .Sharpe, Cat. Biril.^ Brit. Miis. vi. p, 292. pi. xviii. fig. 1 (1881.— Ho Xapo, 

 Eastern Ecuador). 



t There are twj adults from this locality, collected by G. Hopke, in Mm"!. II. v. Berleps'-h. 



