118 Mr. 0. Salvin on the Genus Cinclus. 



C. supra fuscus, pileo cinereo-brunueo, capitis lateribus et nu- 

 cha dilutioribus : subtus albus, ventre imo et hypochondriis 

 fuscis : crisso cinereo. 

 Hah. "Ad Jeniseam et in orientali Sibiria" {Pallas) ; Udskoi- 

 Ostrog [Middendorff) ; Semipalatinsk {Hartlaub, fide Gould). 

 Mus. Derb. et Brem. 



I have not seen this species, which, though closely allied to 

 C. aquaticus, is easily distinguishable by its almost entirely white 

 under plumage. I have nothing to add to Mr. Gould's remarks 

 in his ' Birds of Asia/ except to state that the bird called 

 Cinclus aquaticus by Radde from South-east Siberia is this spe- 

 cies, and not C. cashmiriensis as Mr. Blyth supposes (Ibis, 1866, 

 p. 374), as will be seen by reference to Radde's work *. 



Its geographical range seems to be confined to streams of the 

 northern slopes of the Altai chain, the sources of the great rivers 

 of Northern Asia. 



b. Whole-coloured species. 

 a'. Species of the Palsearctic Region. 



6. Cinclus sordidus. 



Cinclus sordidus, Gould, P.Z.S. 1859, p. 494, and B. As. pi. 



C. obscure brunneo-niger, pileo, nucha, gula et pectore dilu- 

 tioribus. 



Hab. Ladakh, Thibet (Adams) . 



Mus. Brit. 



This species seems to stand alone, corresponding in its sombre 

 colour with C. pallasi and its allies, but having otherwise the 

 " facies " of C. aquaticus and the white-breasted group. 



It forms one of the three species inhabiting the Western Hi- 

 malayas. 



7. Cinclus pallasi. 



Sturnus cinclus, var., Pallas, Zoogr. R.-As. i. p. 426. Cinclus 



* Radde (J. c.) says that he could find no description of C. hncogaster in 

 Eversmann's ' Addenda ad celeberrimi Pallasii Zoogiaphiam Eosso- 

 Asiaticani.' 1 have not been able to find Tchithatcheft's ' Voyage Scien- 

 tifique dans I'Altai,' where, Mr. Gould says, is a notice of this bird. If 

 it is there described under this name, the synonymy must stand as above ; 

 if not, the specific name must be ascribed to Bonaparte, who gives a short 

 diagnosis in the 'Conspectus.' 



