| OCR Text |
Show 1874.] THE GENUS SAXICOLA. 217 17. opistholeuca, Strickl. Similar to S. leucura, but smaller. Culm. 0*6, tarsus 0*9. Section II. Back in the males black; shoulders white. 24. monticola, Vieill. Entirely black, except abdomen and shoulders. 25. arnotti, Tristr. Supercilium white ; crown white and black intermixed ; entire underparts black. 26. leucomelana, Burch. Crown grey ; rump, upper and under tail-coverts, base of rectrices, and abdomen white. 27. griseiceps, sp. nov. Head and nape ashy grey; otherwise not unlike the preceding species. Section III. Back in the males cinereous. 1. cenanthe, L. A black mark through the eye ; underparts whitish ; wings black ; sexes dissimilar. 29. cinerea, Vieill. No black mark through the eye ; throat and breast pale cinereous ; rump and outer edges of all tail-feathers, except central pair, white ; second primary emarginate at tip. 30. pollux, Hartl. No black mark through the eye ; throat and breast cinereous ; rump similarly coloured to the back; external edges of outer rectrices white ; second primary emarginate at tip. 31. castor, Hartl. No black mark through the eye; underparts cinereous throughout; rump and basal portion of all tail-feathers, except the two central pairs, white; second primary not emarginate at tip. 28. diluta, sp. nov. No black mark through the eye ; upper parts to the rump pale cinereous; rump and basal portion of all tail-feathers except central pair white; shoulders white or whitish ; second primary not emarginate. Section IV. Hack in the males neither black nor cinereous. A. Interscapulary region in adult white in breeding-plumage, rufescent or greyish in winter ; wings blackish ; sexes dissimilar. a. Underparts white in breeding-plumage. 2. stapazina, L. Black band through the eye ; throat white. b. Throat black. 4. rufa, Brehm. Black on the throat not extending far down the throat; upper parts white in summer, rufescent in winter. 5. melanoleuca, Giild. Black on the throat extending very far down, to the top of the breast; upper parts white in summer, rufescent in winter. 6. erythraa, Ehr. Black extending to the upper breast, and joining that colour on the flanks ; upper parts white in summer, greyish in winter. B. Feathers on the interscapulary region intermixed black and rufescent; wings black. PROC. ZOOL. Soc-1874, No. XV. 15 |
