Vol. xxxviii. | 68 
the size of the bird, we have the following summary of 
the wing-measurements :— 
Northern India, average wing-measurements 177'7 mm. 
Central India, - 4 3 160-0 mm. } 
South India, z 5 > 154-2 mm. { 
Ceylcn, rs 3 5g 145°4 mm. 
=157'5 mm, 
There would thus appear to be three well-defined races, 
a Northern Indian, a central and Southern form, and a 
third in Ceylon. When, however, one considers the matter 
more in detail, I find that the large Northern form is 
essentially a North-eastern form, and that if we exclude birds 
from the N.W. the difference in measurement is even more 
striking, z.e. 178°5 mm. as against an average of 157-5 mm. 
It must also be remembered that this Cuckoo Shrike is a 
bird which wanders about considerably in the cold weather, 
a fact which may account for the presence cf birds in areas 
to which, judging from their size, they do not seem to 
belong. Under this category comes, I consider, a bird 
obtained in Mysore with a wing of 180 mm. and two others 
obtained in Coorg and the Neilgherries with wings of 187 
and 192 mm. respectively. All three birds were obtained in 
winter, and would undoubtedly have returned to their own 
more northern breeding-grounds in the spring. 
For the present I retain the following forms :— 
(1) Graucalus macei macei. 
Graucalus macu Lesson, Traité, p. 349. 
Type locality. Bengal. 
Habitat. The whole of Continental India south of the 
Himalayas from West Nepal to Bhutan and Western Assam, 
together with the country lying at their bases, as defined in 
the next subspecies. Andamans. 
This is a medium-sized bird, with throat and fore-neck 
barred throughout. 
Wing about 157°5 mm. 
I cannot separate the Andaman bird from typical macei, 
though some individuals appear to be darker and the females 
somewhat heavier and darker barred below. 
