HIRUNDINID^ — THE SWALLOWS. 207 



Genus CHELIDON Forster. 



Chelidon Fokst. Synop. Cat. Brit. B. 1817,55. Type. Birundo rustica LiKN. 



"Gen. Chab. Nostrils lateral. Tarsi short, not exceeding middle too without its claw; 

 the upper joint covered with feathers, whicli extend a short distance along the inner face 

 of tarsus. Tail very deeply forked; the lateral feather much attenuated, twice as long as 

 the middle. Basal joint of middle toe free for terminal fourth on outside, for half on 

 Inside. Nest partly of mud, and lined with feathers; eggs spotted. 



In type, an in American species, the forehead and throat rufous; a black pectoral col- 

 lar; tail feathers with large light spots on inner webs." {Hist. N. Am. B.) 



This, the typical genus of the family, has numerous representa- 

 tives in the Old World, but in America is represented by a single 

 species, the C erythrogaster, or common Bam Swallow, which in- 

 habits the greater portion of both North and South America. The 

 various species are characterized, in addition to the characters of 

 form detailed above, by a distinctive coloration very different from 

 that of the otherwise closely related genera Tachycineta and Calli- 

 chelidon, but much resembling that of the species of Petrochelidon, 

 from which, however, other characters trenchantly separate them. 

 The alhed American genera may be distinguished from Chelidon as 

 follows : 



Tarsi slightly feathered on inner face at upper end; equal in length to middle toe 

 without claw. 



Tail very deeply forked. Plumage beneath rufous, the throt-al darker Chelidon. 



Tail slightly forked or emarginate. plumage beneath pure white Tachycineta. 



Tarsi entirely naked, lengthened, equal to middle toe and half its claw. 



Tail considerably forked. Plumage beneath pure white Gallichelidon*. 



Chelidon erythrogaster (Bodd.) 



BABN SWALLOW. 



Popular synonym. Eufous-bellied Swallow. 



Hirundo erythrogaster "Roo-D.TaXil. P. E. 1783,45 (based on PL Enl. 724, fig. 1).-Baied. Re- 

 view, 1865,295.— CouES.B. Col. Val. 1878, 407 {erythrogastra); Ridqw. Nom. N. Am. 

 B. 1881. No. 154. 

 Chelidon erythrogastra Stejnegek. Proc. U. S. Nat. Mus. v, 1882,31. 

 Hirundo ru/a Gmel. S. N. 1,1788,1018.— Nutt. Man. i, 1832,601. 



ffirundo ^orreornm Barton, Frag. Nat. Hist. Penn. 1799, 17.— Baird. B. N. Am. 1858,308; Cat. 

 N. Am. B. 1859,No. 225; Review. 1865. 294.— CouES,Key,lS72,113; Check List, 1873,No. 

 Ill: B. N. W. 1874,85. -B. B. & B. Hist. N. Am. B. 1,1874,339, pi. 16. llg. 9. 

 Hirundo erythrogastra horreoriim CouES,2d Check List, 1882,No. 159. 

 Hirundo rustica "Linn." Aud. Orn. Biog. ii. 1834, 413, pL 173; Synop. 1839,35; B. Am. 1,1840, 

 181, pi. 48 (neo Linn.) 

 Hirundo americana WiiS. Am. Orn. i. 1812,34, pi. 38, flgs. 1,2, 



* C. cyaneoviridis Bryant; Baird, Review. 303 (Bahamas). 



