CONÏKIBUTIONO TO THE OKNlÖ OF .SAGHALIN. "21 



The black cap of the head extends all over the hind neck 

 down to the upper back and is bordered ou the sides by a broad 

 white band extending from the sides of head, which are of the 

 same colour. In the middle of back, the black of the hind neck 

 reaches directly the colour of the mautle which may be termed 

 pale ashy gray with a shade of isabelline. The fluffy feathers of 

 rump isabelline white. The upper tail-coverts very pale ashy 

 gray. AVing-coverts darker gray than the mantle. The quills 

 dark slate coloured with white margins. The tail feathers are 

 similar but their outer web is more or less ashy white or 

 ashy gray, lightest in the outermost feather. The throat is 

 black, partly with white tips to the feathers. The under parts 

 for the rest dirty white. The under-wing-coverts are pure 

 white. 



Bill black. Culmen 11 mm. Wing 66-64 mm. 



Taczanowski regards the tit-mouse of Saghalin to be F. a. 

 baicalensis, but, as mentioned above, it is much lighter in colour 

 and easily distinguishable. Nikolski found it " dans l'île de 



Sakhalin commuu et sédentaire, particulier aux grandes forêts" 



(Translation by Taczanowski). 



20. Aegithalos catidaius caudattis (Linné). 

 Tunnaichia : 1 ^ , Sept. 14. 



Wing 64, tail 96, culmen 7 mm. As this race lias been 

 recorded from Iturup (Snow) as well as from Yezo (Blakiston and 

 Piiyer) and the opposite continent, Saghalien lies within the area 

 of its very wide distribution. Nikolski did not observe the 

 species and regards it therefore to be rare in Sakhalin. 



