in Great Britain during the Nesting-season. 139 



sight of the living bird ought to more than compensate them for 

 the loss of the best of flies. 



HiRUNDO RUSTiCA {Linn.). Chimney-Swallow. 

 Provinces I.-XVIII. 

 Subprovinces 1-35, 36, 37, 38. 

 Lat. 50°-60° or 6 P. " British " type, or general. 



Throughout Great Britain, and also reaches the Scottish isles. 



Mr. John Macgillivray describes H. r-ustica as the only Swal- 

 low found by him in the Outer Hebrides, where it did not arrive 

 till the end of June. Messrs. Baikie and Heddle say that a few 

 pairs build annually near Kirkwall ; and Dr. Saxby tells me that 

 a nest was once taken in Lerwick. 



Chelidon ^rbica {Boie). House-Martin. 

 Provinces I.-XVIII. 

 Subprovinces 1-32, 34, 35, 37, 38. 

 Lat. 50°-60° or 61°. " British " type, or general. 



Builds regularly as far north as Sutherland and Caithness ; 

 but does not appear to reach the Outer Hebrides, nor has 

 Mr. Graham found its nest in the islands of Argyleshire. 



In Orkney, the House-Martin builds at Kirkwall and about 

 the Cathedral of St. Magnus [Messrs. Baikie and Heddle) . 



CoTYLE RiPARiA (Boie). Saud-Martin. 

 Provinces I.-XVIII. 

 Subprovmces 1-32, 34, 35, 37, 38 ? 

 Lat. 50°-60°. " British " type, or general. 



Ranges to the extreme north of the mainland; but, like the 

 former species, the Sand-Martin. has not been found breeding in 

 the isles of Argyleshire. 



W. Macgillivray has noticed that Sand-Martins frequent the 

 sand-banks on the shores of the northernmost Hebrides. They 

 build in Orkney, and perhaps occasionally in Shetland. 



Cypselus apus {Illig.). Swift. 

 Provinces I.-XVTL 



