1 62 Journal of the F.M.S. Museums. [Vol. VII. 



d-g- Z s , i ? Telok Wan, Pulau Terutau. 18-24U1 

 December 1916. [Nos. 3658, 3678, 3723. 

 3730-] 

 /;-*'. $ ? Chong, Trang. S. W. Siam 11 1 5th 

 December 1909. [F.M.S. Mus. Nop. 395. 

 396/10.] 

 j. i vix ad. Koh Samui, Bandon Bight, S. E. 

 Siam. 8th May 1916. 

 " Iris orange, bill dark greenish shite, feet olive green." 

 The detailed measurements of two males from Terutau, 

 taken in the flesh are : TL. 287, 290 ; W, 164. 157 : T. 97, 95 ; 

 B, 50, 54; TS. 31,28. 



The wing and bill (from gape) of the Langkawi specimens 

 taken on the skins are male, W, 156, B. 55; Female, W, 151, 

 B. 49; of three other specimens from Terutau: — Males, W. 

 159, 154, B. 52, 51. Female, 153, B. 46. Of the Trang speci- 

 mens, Male, W. 157, B. 49; Female, W. 150, B. 51. Of 

 the bird from Koh Samui, W. 160, B. 52. The dimensions of 

 two males from Tonka (the type locality of the subspecies as 

 given by Hume {Stray Feath. viii, p. 154* as 6-15 and 6-3 in. 

 on the wing. viz. 156 and 160, which agrees well with the 

 above series. 



In my paper on the collection made by Mr. Kloss in S. E. 

 Siam I unfortunately attributed Tickell's type of Picus 

 guttacristatus (Journ. Asiat. Soc. Bengal) lii, p. 578 (1833) to 

 Northern Tenasserim, where the greater part of his collections 

 were made, whereas it was really secured in the jungles of 

 Eastern Bengal. As Hume, Oates and Blanford have pointed 

 out the Southern Indian bird, C. delessertii, Blyth, that from 

 eastern Bengal and the low country adjacent, C. guttacristatus 

 (Tick.) and the birds from the northern Malay Peninsula 

 approximate in size, though it would appear that the Malay 

 birds on the whole averages smaller, the wing never exceeding 

 164 mm (6.45 in.) while it is possibly brighter in general tone. 

 Chrysocolaptes sultaneus (Hodgs.) from the Himalayas is a 

 very large bird indeed and can fairly claim subspecific rank on 

 these grounds alone though there are no tangible differences in 

 colouration. 



In tlie Malay Peninsula the bird is common in the 

 northern third but is unknown from any locality between 

 Penang and Southern Johore where a small form occurs, W. 

 male, 148, 143; B. 46, 47, which will receive a name in due 

 course. This form also occurs abundantly on the islands of 

 the Rhio-Johore archipelago south of Singapore. 



It thus appears that in order of size we have the following 

 forms. 



C. guttacristatus sultaneus, Himalayas. Wing averag- 

 ing 177 mm. 



C. guttacristaius guttacristatus. Eastern Bengal, 

 Burma, etc. Wing 161 or perhaps slightly more. • 



