ROCK SWALLOW. 



103 



the mountains of Auvergne, and Dauphin6, and 

 Gibraltar: it arrives at the former place in the 

 middle of April, and retires the middle of August. 



ROCK SWALLOW. 

 (Hirundo rupestris.) 



Hi. murina subtus albida^ remigibus caudaque nigricantibus, rec' 



tricibus latere interiore macula ovali alba. 

 Mouse-coloured Swallow, beneath whitish, with the quills and 



tail dusky, the lateral tail-feathers with an oval white spot on 



the inner web. 



Hirundo rupestris. Gmel, Si/sL Nat, 1, lOlQ. — Lath. Ind. Orn, 

 2.576.11. 



Rock Swallow. Lath, Gen, Syn, 4. 569. 11. 



Size of the Ambergris Swallow : length about 

 five inches and a half: beak black : upper parts 

 of the plumage the same as the Sand Martin, of a 

 pale mouse-colour : the wings and tail darkest ; 

 the latter very slightly forked, and each feather 

 with a white spot on the inner web : under parts 

 of the body whitish : legs black, not feathered : 

 builds in the cavities of rocks a nest of mud and 

 clay ; and inhabits Carniola. 



