HIRUNDININAE. 83 
Cotyle (Ptyonoprogne) concolor, Sykes. 
90.—Jerdon’s Birds of India, Vol. I, p. 165; Butler, Guzerat ; 
Stray Feathers, Vol. III, p. 453; Deccan, Stray Feathers, Vol. 
IX, p. 378 ; Swinhoe and Barnes, Central India ; ; Ibis, 1885, 
p 60. 
THE Dusky CraGc Martin. 
Length, 4°6 ; wing, 4; tail, 2. 
Smoky brown, slightly paler, and with a reddish tinge beneath ; 
a round white spot on the inner webs of all the tail- feathers, 
except the centre and outer pairs; the tail is nearly square. 
The Dusky Crag Martin, with the exception of Sind, occurs 
more or less abundantly throughout our limits. It is somewhat 
solitary in its habits, rarely more than a single pair nesting in the 
same vicinity. They have apparently two broods in the year, and 
lay at different seasons in different parts of the country, but from 
January to March, and July to September, are perhaps the best 
months to search for eggs. Its nest, affixed to projecting eaves 
or ledges of rock, is very like that of H. jilifera, but is smaller, 
more cup-shaped, and pointed at the bottom, but, like it, is well 
lined with feathers; the eggs, three or four ‘in number, are white 
with numerous spots and specks of various shades of yellowish or 
reddish-brown, but these markings are neither so bright, or so 
bold, as those of the Wire-tailed Swallow; they average 0°72 
in length by 0°52 in breadth. 
Cotyle (Ptyonoprogne) rupestris, Scop. 
91.—Jerdon’s Birds of India, Vol. I, p. 166; Butler, Guzerat ; 
Stray Feathers, Vol. III, p. 456; Deccan, Stray Feathers, Vol. 
IX, p. 378, 
THE Mountain CraG Marrin. 
Length, 5:25; expanse, 14:5; wing, 5°5; tail, 2-4; tail nearly 
square. 
Bill black ; legs light reddish-brown. 
Above, pale ashy-brown, darker on the quills and tail; throat 
and breast rufous- white ; abdomen rufous-ashy ; under tail-coverts 
ashy-brown ; a large white spot on the inner webs of all the tail 
feathers, except the two outer and two centre ones. 
The Mountain Crag Martin is a not uncommon winter visitant 
to the more hilly districts, but it does not occur on the plains, 
and has not as yet been recorded from Sind, where its place is 
taken by the next species. 
Cotyle (Ptyonoprogne) obsoleta, Cud. 
91bis—Murray’s Vertebrate Zoology of Sind, p. 104; Hume, 
Stray Feathers, Vol. I, p. 1. 
Length, 525 to 56; expanse, 12:25 to 13; wing, 4-4 to 4°75 ; 
tail, 1°. 
Bill black ; legs and feet horny-brown. 
