CATALOGUE. 
97 
young ready to fly in the beginning of December (at Calcutta), and 
also at the end of February. The nest-holes vary in depth from a 
foot and a half to considerably more, according as the banks are more 
or less hard ; and the nest itself is composed of dry grass, with 
occasionally a few feathers in the lining ; the eggs are pure white, 
like those of H. riparia.'' — (Joum. A. S. Beng. XVI. p. 119.) 
120. COTYLE CON COLOR, Sylces Sp. 
Hirundo concolor, Sykes, Froc. Zool. Soc. (1832), p. 83 ; 
Joum. A. S. Beng. III. p. 421. G. B. Gray, Gen. 
of Birds, 1. p. 58. Blyth, Jov/rn. A. S. Beng. XVI. 
p. 119 ; Cat. B. Mm. A. 8. Beng. p. 199. Jerd., 
Madr. Joum. L. S. XI. p. 238. 
Cotyle concolor, Boie, Isis (1844), p. 170. G. R. Gray, 
Cat. B. Brit. Mus. II. p. 30. Bonap., C. G. Av. 
p. 342. 
Biblis concolor. Less., Compl. Buff. VIII. p. 495. 
The Brown Crag-Swallow. 
A. B. Dukhun. Presented by Colonel Sykes. 
Colonel Sykes remarks, "These birds live on the banks of rivers." 
—(P. Z. S. 1832, p. 83.) 
Mr. Jerdon " never observed this swallow in the Carnatic, either 
in the northern division or west coast, and only towards the more 
northern portion of the Deccan. It is by no means numerous ; it is 
solitary, frequenting tanks or rivers, and also gardens, fields, and 
villages. It breeds in the eaves of houses, in high walls, and other 
buildings."— (Madr. Journ. L. S. XI. p. 238.) 
121. COTYLE CINCTA, Bodd Sp. 
Hirundo cincta, Bodd, Tabl. des PI. enl. d'Aub. p. 45. 
Cotyle cincta, G. R. Gray, Gen. of Birds, I. p. 60; Cat. 
B. Brit. Mus. II. p. 30. 
Hirundo torquata, Gmel., S. N. L. I. p. 1022. Bonap., 
C. G. Av. p. 342. 
The Brown-collared Swallow. 
A. B. Abyssinia. From Sir W. Harris's Collection. 
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