6g [ Vol. xxxvill. 
series there are two or three specimens labelled “¢ ,”’ but 
these have the dark lores and eye-streak. of the male bird, 
and are undoubtedly of that sex. 
The table below gives in detail the measurements of 
184 specimens, the males and females being given separately ; 
probably, however, the differences shown between the sexes 
do not mean anything, for though in most imstances the 
females are smaller than the males, yet in Central and South 
Burma the contrary prevails. 
Average. Average. 
27 Northern India, ¢. Wing 170-191, 178°9 ; tail 112-135, 125°5 mm. 
19 4 »  @- » 168-185,176:0; ,, 110-134, 119°6 mm. 
11 Central India, ¢. Wing 153-173, 162:2; tail 107-132, 114°2 mm. 
if) ~—C, CQ.” ,, . 158-166, 168-0; , 109°199,'114-4 mm. 
13 South India, . Wing 151-160, 155-0; tail 95-114, 115-0 mm. 
ll me a Q. ,, 149-156, 153'6; ,, 92-128, 116°2 mm. 
4 Ceylon, dg. Wing 145-150, 147-2; tail 95- 99, 95°5 mm. 
3 p ©. 4 140-145,143:0; ,, 94-105, 99°6 mm. 
8 Andamans, 3. Wing 154-176, 168-7 ; tail 114-130, 118-9 mm. 
9 > Ot. ay , LOF=169, 162-0; ,, LIL-136. 117-9 rom, 
9 N. Burma, dg. Wing 169-179, 172°8; tail 114-129, 121:0 mm, 
14 Central Burma, ¢. Wing 157-174, 164-4; tail 108-125, 114-0 mm. 
15 _ re Q. , 161-174,166:3; ,, 108-120, 1135 mm. 
9° South Burma, ¢. Wing 160-180, 166°6; tail 107-129, 113-0 mm. 
5 > a Os 6», 168-174, 169°2; ,,. 110-119; 112:'4:mm. 
3 Hainan, 3. Wing 148-172, 1620; tail 110-111, 111-0 mm. 
] 3 ae TGU-O's> 5, 1100 mm. 
3 Siam, dg. Wing 156-192, 172°5 ; tail 112-131, 118-0 mm, 
ro 2. ,, 156-160,158:0; ,, 110-114, 112‘;0mm. 
The Burmese birds do not differ very greatly in size 
North and South—at all events not to an extent which 
makes division necessary. The Indian birds, however, vary 
so greatly that some geographical differentiation in name 
appears essential. 
Eliminating the difference in the sexes, and omitting the 
tail-measurements, which appear to vary in agreement with 
