EIPARIA. 



323 



Family HIRUNDINID.^. 



When Brabourne and Chubb published their ' List of the Birds 

 of South America ' in 1912, this family was represented by 

 seven genera and twenty-four species. Six of the oenera and 

 eleven of the species are represented in British Guiana. 



Genus EIPARIA Foster. 



Riparia Foster, Sjnop. Cat. Brit. B. p. 17, ISJ 7. Type R. riparia 

 (Linn.). 



Fig. 128. — To show the tail, which is ahuost square. 



In this genus the toes are unfeathiered, a superior niembratie to 

 the nostrils is present, there is no indentation on the inner web of 

 the outer tail-feathers, a distinct longitudinal membrane over- 

 hanging the nasal aj)erture is present, and the outer toe and claw 

 are superior to the hind toe and chiw. Coloration : male and 

 female similar. 



554. Riparia riparia. 



Bank-Swallow. 



Hirundo riparia Linn. Syst. Nat. i. p. 192, 175S (Sweden). 



C'olih^ riparia Sulvin, Ibis, 1885, p. 20G (Bartica (J rove) ; Sharjx?, Cat. 



B. Brit. Mus. x. pp. i)(), 080, 188;") (Bartica Grove). 

 Riparia riparia (iuclcli, Timeliri (2) x. p. 262, 185)0 (migration); 



Bnihounie & Clnibh, B. S. Amer. i. p. 320, no. 3320, 1912. 



Sand Martin {Qiielch). 



Adult male. General colour of the up[)«;r parts dark brown, 



V 2 



