NOTICES ON SOME TURKESTAN BIRDS, SevertsOV. 429 



hlbis. — Calliope Ballioni, Sev., is C, pectoralis, Gould. 



58. — Saxicola salina, Eversm., is only a somewhat less rufous 

 variety of S. deserti; another synonym is S. gutturalis, Licht. 



59. — S. melanogenys, Sev., called by me also melanotis, is S. 

 vittata, Ehrb. et Hempr. 



60. — S. lugens, Sev. = S. morio,~) 

 Licht, = S. Hendersoni, Part, Hume, j Wing lining black, both 



60bis. — S. leucomela, Sev. = S. )> differing by the tail- 

 Hendersoni, Hume, Jig. = S. pies- \ tips. 

 chanka, Lepechin. J 



60 ter. — My Saxicola talas appears to me now to be the 

 second, after nest-feathers, plumage of S. morio. 



61. — S. monacha, Sev., = S. lugens, Licht = S. leucomela, 

 Pall, Zoogr, (specimen described, white wing lining) ; the account 

 about manners and range confounds this, 5. morio, and S. 

 pleschanka. 



62. — S. syenitica, Sev., ex Heugl. = Dromolcea opistholeuca, 

 Strickl. 



63. — Pratincola indica. — You deny the specific difference ; so 

 did I, till Mr. Cabanis shewed it to me ; a rather trifling, but con- 

 stant difference. P. rubicola has always blackish markings along 

 the feathei'-shafts of the white rump, P. indica never ; the form of 

 the black centres of the dorsal feathers is also different ; the gene- 

 ral blackness and the size of indica varying. P. indica has its 

 western limit on the Volga, and is much sent from Sarepta as 

 7'iibicola; European, P. rubicola (vera) has its eastern limit on 

 the Dneiper. In the intermediate region neither occurs ; on the 

 Ural, in central Asia and south Siberia we find only P. 

 indica. 



64. — Turdus mystaci?ius, Sev., is long ago described as the 

 female and young of T. atrogidaris, but I have also collected old 

 males in that plumage ; guld albo.-fidvescente, inter duas strias, 

 mystacinis atris, ingluvie cinerascente, nigro variegata, catera ut 

 T. atrogidaris, and young females of T. atrogidaris, gxdd nigro- 

 fusca, plumis fulvescente limbatis. Both forms are closely 

 connected by intermediate specimens of females and young ; yet 

 their difference is independent from age and sex. T. myslacmus 

 deserves a particular name as a beautiful illustration of Darwin's 

 theory ; it is an old form which, having given already, as trans- 

 formed derivates, T. fuscatus, T. Naumanni, T. ruficollis, is 

 transforming itself into T. atrogidaris; of this [ shall prepare a 

 more elaborate monography. The gradual transformation, dur- 

 ing myriads of generations, is done by sexual selection. 



65. — Lanius isabellinus, Hempr. = L. arenarius, Blyth. 



65. — L. phrenicurus of my catalogue is not the true phanicu- 

 rus of Pallas (which is Ij. cristatus, L., a very improper name) ; 

 it is a new species, L. phcenicuroides, Sev., described in my work 



