416 Mr. S. A. Buturliu on Birds 



inner webs, and white outer webs and ends. The dimensions 



are as follows (in millim.) : — 



6. 6- 2- Juv. 



Wing 67 63 63 63 



Tail 47 45 41 43 



Tarsus 215 21'5 225 21-5 



Gape of bill 16 16 16-2 15-5 



Culmen 11 13 (inj.) 12 105 



Bill from nostrils 8-9 8-8 88 8 



Its height at base 37 4-4 4 1 3'8 



Its breadth 4'5 5 5 45 



First primary longer than coverts. . 9 6 9 9 



Wing formula— 4=3 just ;> 5 > 6 > 2 nearly =7 > 8. 



93. Enneoctonus collurio kobylini, n. subsp. 



My four males * from Kutais and one from Ssuram all 

 differ to some extent from a dozen specimens of Central- 

 Russian E. collurio L. The chestnut area of the back is some- 

 what reduced above and below, giving more room for the grey 

 colouring of the neck and rump. The colour of this chest- 

 nut area is also rather duller in Caucasian birds, with a 

 brownish tinge (not so bright rusty-shaded as in Central- 

 Russian birds), and is conspicuously suffused with greyish, 

 such as I have never seen in typical E. collurio. The under 

 parts of the body are a trifle paler in the Caucasian form. One 

 old male ("N. 131" of Kobylin's Coll., 25 May, Kutais) 

 has all the back grey, only slightly tinged with chestnut on 

 the mantle. In size I see no difference. 



Radde (I.e. p. 222, Russ. ed.) points out the same differences 

 between his twenty-five Caucasian specimens on the one hand 

 and several German and Swedish on the other. Th. Lorenz 

 (op. cit. p. 40) also writes that in his male specimens from 

 the Northern Caucasus " rothbraun des Riickens siet nicht so 

 weit nach unten erstreckt und ist die Farbe bei den Kauka- 

 siern voller" than in British specimens of E. collurio L. 

 So I am bound to conclude that the differences are not 

 individual, but shew geographical variation, and I name 

 this slight variety after Mr. Kobylin — who collected the 

 specimens recorded — Enneoctonus kobylini. 



* Seven more specimens have since been received. 



