TACHYCINETA. 4G1 



Piilcr : Lower parts tawii}- cinnamon or pule rusty in adult male (ibo chin 

 and throat rusty cinnamon), pale cinnamon-buflFy in adult female; length 

 5.75-7.75, wing about 4.GO-4.90, tail 3.70-4.10, forked, in adult male, for 

 about 1.85-2.10. Eggs .77 X -S-l- -?^<'^- "Whole of North America ; south, 

 in winter, through Middle America and West Indies to various parts of 

 South America 013. C. erythrogaster (Bodd.). Barn Swallow. 



Darker: Lower parts bright cinnamon-rusty (much like throat of C. erythro- 

 gaster), the chin and throat rich rustj' chestnut; length about 7.00-8.00, 

 wing 4.G0-4.80, tail of adult male 4.15-4.80, forked for 2.25-2.85. Hah. 

 Kamtschatka and eastern Siberia in summer; south, in winter, to India. 



C. tytleri (Jeru.). Kamtschatkan Barn Swallow.' 



Genus TACHYCINETA Cabanis. (Page 458, pi. CXIY., fig. 6.) 



/Species. 



Common Characters. — Lower parts entirely white. Adults glossy dark steel- 

 blue above, or else rich soft velvety bronze-green, varied with tints of jDurplish, 

 violet, etc., the females usually considerably duller than the males; in lointer, the 

 secondai'ies (especially tertials) conspicuously margined with white, but otherwise 

 as in summer. Young: Above dull brownish slate. A'es? in holes, usually of trees, 

 sometimes in cliffs or buildings. Eggs 3-6, plain pure white. 



rt'. Ear-coverts dark steel-blue, or dusky, lil^e upper parts ; feathers of lower parts 

 entirelj- pure white, except at exti-emc base ; upper parts in adult uniform 

 glossy steel-blue, varying to greenish. (Subgenus Iridoprocne Coces.') 

 i'. Euinp steel-blue (adult) or dull slate (young) like rest of upper parts; no 

 white on sides of forehead. 



Adult male: Above rich burnished steel-blue (var^-ing much in shade), 

 the larger wing-feathers and tail blackish, faintly glossed with dull 

 greenish ; lores deep black ; entire lower parts pure white. Adult 

 female: Usually duller above than male, but often undistinguish- 

 able. Young : Above entirely dull brownish slate. Length 5.00- 

 6.25, wing about 4.50-4.80, tail 2.30-2.50. Eggs .75 X -52. Hab. 

 "Whole of North America ; wintering from southern Florida, Cuba, 

 and Gulf coast, south to Guatemala. 



614. T. bicolor (Yieill.). WMte-bellied SwaUow. 

 t'. Eump white (the feathers with fine blackish shaft-streaks) ; a white line 

 on each side of forehead, along upper edge of lores. 



Otherwise like T. bicolor, hnt much smaller; length about 4.10-4.80, 

 wing 3.75-3.90, tail 1.80-1.90. Hab. Coasts of Central America and 



' Ilirundo tytleri Jerp., B. Ind. iii. App. 1S64, 870. (TI. mlvrnln RiDOW. Pr. U. S. Nat. Mns. 1S83. 95.) 

 ' Iridoprocne CoCES, B. Col. Val. 1S78, 412. Type, Hirundo bicolor ViEiLL. (See Baird, Review Am. B. 

 i. 1S65, p. 296.) 



