THE ISLANDS OF THE BAY OF BENGAL. 245 



In regard to these Andaman crows it is a curious fact that 

 though so many of them are to be seen about Ross Island 

 during the day time not one of them sleeps there ; all wing 

 their way towards nightfall to the mainland, chiefly, to the 

 woods on Mount Harriet 



663. — Corvus impudicus, Hodg. (0.) 



This species was introduced by Colonel Tytler but has entirely 

 disappeared. 



674 bis.— Dendrocitta Bayleyi, Tytler. (36.) 



This very handsome little Magpie almost deserves generic 

 separation; itisintermediatebetween Dendrocitta and Crypsirina, 

 and has all the tail feathers, 12 in number, but specially the cen- 

 tral ones, gradually widening towards the tips, where in really fine 

 fresh moulted specimens, the central pair are l - 3 wide against 

 about 0*7 immediately beyond the upper tail coverts. Curiously 

 enough, in the young birds, this difference is scarcely percep- 

 tible, and even in the adults it is only conspicuous in fresh 

 moulted birds, but in these it is very noticeable in both sexes. 

 We obtained a large series. The following is a resi.me of 

 dimensions of both sexes recorded in the flesh. The females 

 average slightly smaller, but not sufficiently so to make it worth 

 while to give the dimensions separately : — 



Length, 12'5 to 14; expanse, 14 to 15-12; wing, 4"4 to 5 ; 

 tail, from vent, 7 to 8 - 5 ; tarsus, 1 to 1*1 ; bill, from gape, 1 to 

 1*1; bill, at front, 0'85 to 0'96 ; closed wings reach from 

 within 5 to 625 of end of tail ; weight, 3 - 25 to 4 ozs. 



The bill, legs, feet and claws are black ; the soles plumbeous 

 grey ; the irides are bright yellow, in some a rich golden yellow. 



The sexes do not differ in plumage ; but in freshly moulted 

 birds the females do appear to be slightly duller colored ; 

 the lores, forehead, and a patch at the base of the 

 lower mandible, velvet black ; the chin, cheeks, and ear-coverts 

 black, passing into blackish iron grey ; the crown, occiput, 

 nape, throat, neck all round, upper back and upper breast, irou- 

 grey, the two latter more or less tinged with rufescent ; wings 

 black. In the perfect wing, 4th, 5th and 6th quills sub-equal 

 and longest, 7th about - 15 shorter, 3rd about - 3, 2nd about 

 095, and first about 2'2 shorter. All the secondaries and all 

 the primaries but the first two, white at the bases on both webs, 

 the white patch hidden on the first five or six primaries by the 

 greater coverts, but showing on the rest of the primaries and 

 secondaries as a conspicuous white bar, broadest on the latest 



Dl 



