338 
Mr. Blyth’s Commentary 
increasing on the throat. In other respects it is like L. ariel. 
Dr. Adams states that this Swallow is “ common on the lakes 
and streams in the valley of Kashmir, and likewise in the 
Punjab at certain seasons.” 
88. CoTYLE SUBSOCCATA. 
Dr. Jerdon considers this a doubtful species, in his ( Appendix/ 
p. 875. The specimens which Mr. Hodgson sent under this name 
to the Museum of the Asiatic Society at Calcutta, were decidedly 
identical with C. sinensis; and Mr. G. R. Gray assigns both C. 
suhsoccata and C. minuta (Hodgs.) to C. sinensis, in the second 
edition of his f Catalogue of the Birds of Nipal/ 
89. CoTYLE SINENSIS. 
This bird breeds in the cold season, burrowing into the banks 
of the Hugli in the same manner as C. riparia elsewhere; for 
this I can vouch, having taken the eggs and young ( cf . Tytler, 
Ann. Mag. N. H. 1854, xiii. p. 371). The allied C. riparia 
does the same in Egypt (P. Z. S. 1863, p. 288), a most remark¬ 
able fact, as the latter species breeds also in its summer haunts, 
and the former likewise, as in Formosa (vide supra , p. 134)*. 
Dr. Jerdon merely discriminates the “ Crag-Martins ” from the 
“ Sand-Martins ”; but I think them better worthy of separation 
than several named divisions among the Hirundinidce , and adopt 
therefore for the former subgroup the name Ptionoprogne of 
Reichenbach. The two species, P. rupestris and P. concolor , 
differ in size only, though in this considerably. Mr. Gould 
(Handb. B. Austral, i. p. 114) adopts Dr. Cabanis's genus 
Cheramceca for another burrowing Swallow, which he formerly 
styled Atticora leucosternon. 
92. Chelidon tjrbica. 
Stated by Captain Irby to be common in the cold season in 
Oudh (Ibis, 1861, p. 233). Col. Tickell writes —“ There are 
great numbers here 33 (at Moulmein) “ in the season; and I 
have also seen large flocks of them in India; but they appear 
* Of the permanently resident Cypselus affinis, also, Mr. Burgess remarks, 
“ This Swift builds [? produces] twice in the year; I obtained a nest and 
eggs in September, and found a nest with young birds in April” (P. Z. S. 
1855, p. 28). 
