266 REMARKS ON SOME SPECIES OF THE 



Hump distinctly striated. 



Lower surface strongly striated. 



Wing 5 '5 ... ... striolata. 



Wing 50 to 5*2 ... ... substriolata. 



Wing 4*75 ; rump band 1*1 to 1"2 japonica. 

 Lower surface more feebly and narrowly striated. 

 Same size as japonica ; rump band 



only 0*7 wide ... ... arctivitta. 



As for the young birds I know too little of those of nine spe- 

 cies out of the eleven to enable me to speak, but I would repeat 

 that in nou-adults, no certain diagnosis can be taken from 

 the streaking of the rump, the colour of the under surface, 

 or the amount of its striatiou ; the first is a character common 

 to the young of the majority of the species, but which only 

 survives in the adults of four, and the two latter vary much 

 during nonnage, and in no case are precisely those of the 

 adults. 



I cannot conclude without noticing that in my opinion 

 the magnificent Chestnut-bellied Swallow of the Malayan Pe- 

 ninsular, referred to by Holdsworth, P. Z. 8., 1872, p. 419, is 

 quite distinct from hyperythra of Ceylon, and, as they are 

 both very closely allied to the species ; of which we have 

 been treating, (though according to Mr. Gray they belong 

 to the other sub-genus Cecropis, Boie) , I shall give brief des- 

 criptions of both. 



0. hyperythra, Layard. 



Length (from the skin) about 6*5 to 6*75 ; wing, 4*75 to 

 5-0; tail 325 to 3'6 ; fork, 1*2 to 1*7. 



Forehead, crown, occiput, nape and mantle, shining blue 

 black ; wings and tail blackish brown, with more or less of a blue 

 gloss, I suspect according to season. Chin, throat, cheeks, 

 ear-coverts, entire lower surface (except the terminal 0"7 to 0'8 

 of the lower tail-coverts which are blue black) and rump band 

 (about 0"8 wide) rusty red, more inclining to chestnut on the 

 rump. The terminal 05 to 06 of upper tail-coverts blackish 

 glossed blue. All the feathers of the under parts and face, with 

 distinct brown shafts, very thickly set in the ear-coverts. 



Shafts of the earlier primaries brown, paling, in most speci- 

 mens, conspicuously towards their bases. 



C archetes, N. S. 



Malay Peninsular (dimensions recorded in the flesh : — 

 $ Length, 8*15 ; expanse, 150 ; wing, 5*55; tail, 425 ; 

 fork, 2, tarsus, 065 ; bill from gape, 0'65 ; weight, r25oz. 



