436 



Dr. E. Hartert on Birds from 



though they are rather more grey on the back, but the 

 skins are so bad that slight differences cannot well be seen. 



56. Delichon urbica whiteleyi (Swinh.). 



Chelidon whiteleyi Swinhoe, P. Z. S. 1862, p. 320 (Pekin). 



The generic name Chelidon being preoccupied (by Forster), 

 the name Delichon Moore must, of course, be used for the 

 genus. Pallas's name " Hirundo lagopoda " cannot be used 

 for the Siberian form of the House-Martin. Pallas made 

 the name, not for the Siberian form in particular, but for 



Text-fig. 2. 



Nests of Delichon urbica whiteleyi. 



Linnseus's Hirundo urbica. As the habitat, he gives " in 

 omni Rossia et Siberia." The fact that he adds a detailed 

 description of a Daurian example does not alter this. 



Yakutsh, Bulun, Gigansk. Nearly full-grown nestlings in 

 nests on 24. vii. 1903, and 2. viii. 1903. (Nos. 97, 98, 99, 

 332 to 338, 102, 292, 354, 358.) 



[In Yakutsk on June 19th I counted forty-two nests of this 

 species in a space of seven yards under a verandah. During 



