196 Mr. E. C. Stuart Baker on [Ibis, 



? Chrysocolaptes bacha Reicheiib. Scans. Picinpe, 1854-, 

 p. 399 : Central Asia. 



The type of P. guttacristntus was obtained in Borabhum 

 in Manbhura, Bengal, and is a bird with a wing of 166 mm. 

 and a small bill. It is certainly not the same as the big 

 Nepal bird, which Hodgson later on called sultaneus, but is 

 much the same as many Assam and Burmese birds, and all 

 tiiese latter seem referable to the same name. 



I admit the following three forms: — 



(1) Chrysocolaptes guttacristatus guttacristatus. 



Picus guttacristatus Tickell, J. A. S. B. ii. 1833, p. 578: 

 Borabhum. 



Picus strenuus Gould, P. Z. S. 1839, p. 165 : Assam. 



A medium-sized bird with wing varying between 157 and 

 178, average 168*4 mm., and with bill between 43 and 

 60 mm. ; in Bengal and Assam birds the bill is never over 

 50 mm , but in Burmese birds always 50 or over. 



Habitat. Bengal, from Chota Nagpore and Behar east to 

 Assam, north and south of Brahmapootra river, Cachar, 

 Tippera, Manipur, Looshai, Chin and Kachin Hills, Shan 

 States, northern and central Siara, and the whole of Burma, 

 north of Rangoon and the latitude of that place. 



If it be considered desirable to divide the Burmese from 

 the Assam and typical birds on account of their rather 

 smaller size and larger bill, they would have to be given 

 a new name, as there is none at present applicable. 



(2) Chrysocolaptes guttacristatus sultaneus. 



Picus sultaneus Hodgson, J.A. S.B. vi. 1837, p. 105: 

 Nepal. 



? Chri/soco/aptes bacha Reichenb. Scans. Picinse, 1854, 

 p. 399: Central Asia. 



This is a very large form with wing between 172 and 

 190 mm., average 180"5 mm., and a bill between 50 and 

 63*5 mm., very rarely under 60 mm. 



Habitat. N.W. India, IMussoorie to Nepal. Nepal birds 

 average rather smaller than the N.W. Indian ones, but they 

 all have the same enormous bill. 



