BIRDS OP THE ANAMBA ISLANDS. 31 



Geographic distribution. — Breeds in Kamchatka and other parts 

 of northeastern Siberia; and migrates west to Irkutsk in central 

 southern Siberia. Winters south to southern China, Pegu, and 

 Tenasserim. 



4. Hirundo rustica erythrogastris l Boddaert. 



Hirundo erythrogaster Boddaert, Table Planch. Enlum., 1783, p. 45 (Cayenne). 



Subspecific characters. — Similar to Hirundo rustica tytleri, but aver- 

 aging decidedly paler on the lower parts; white tail-spots and white 

 subterminal portions of feathers of upper parts less strongly tinged 

 with buff; and size somewhat smaller. Resembling Hirundo rustica 

 gutiuralis, but throat averaging paler; remaining lower parts more 

 heavily shaded with fulvous ; tail-spots and concealed white subtermi- 

 nal portions of feathers of upper surface more or less tinged with buff. 

 Differs from Hirundo rustica rustica as from Hirundo rustica gutturalis, 

 and additionally in smaller size and interrupted blackish jugular 

 band. 



Type-locality. — Cayenne, French Guiana. 



Geographic distribution. — Breeds in North America, east to the 

 Atlantic Ocean; north to central Quebec (southern Ungava), northern 

 Mackenzie, and northwestern Alaska; west to the Pacific Ocean; and 

 south to the States of Tepic and Jalisco (Mexico), southern Texas, and 

 North Carolina. Winters south to Chile, Argentina, and Brazil. 

 Casual or accidental in Greenland, the Galapagos and the Bermuda 

 islands. 



5. Hirundo rustica transitiva Hartert. 



Hirundo rustica transitiva Hartert, Vogel palaarctischen Fauna, vol. 1, June 

 1910, p. 802 (Plain of Esdralon, Palestine). 



Subspecific characters. — Similar to Hirundo rustica rustica, but 

 smaller, and with lower parts much more deeply rufescent. 

 Type-locality. — Plain of Esdralon, Palestine. 

 Geographic distribution. — Palestine . 



6. Hirundo rustica savignii Stephens. 



Hirundo Savignii Stephens, in Shaw's Gen. Zool., vol. 10, pt. 1, 1817, p. 90 

 (Egypt). 



Subspecific characters. — Resembling Hirundo rustica transitiva, but 

 lower surface much darker, of a rich rufous chestnut. Very much 

 like Hirundo rustica tytleri, but with a usually unbroken blackish 

 jugular band, and deeper tawny buff suffusion on the light tail-spots 

 and the white concealed subterminal portions of the feathers of the 

 upper surface. 



Type-locality. — Egypt. 



Geographic distribution. — Egypt and Nubia. 



1 The subspecific term erythrogaster as here used is a Latin adjective of the third declension, and there- 

 fore has for its proper feminine nominative erythrogastris, not erythrogasfra, as commonly written. 



