90 NILS GYLDENSTOLPE, ZOOLOGICAL RESULTS OF THE SWEDISH ZOOLOGICAL EXPEDITIONS TO SIAM. 



This is especially evident in the males, where the colour of the back is verv bright and 

 mixed with yellow. The runip is washed with golden yellow and well-marked off from 

 the rest of the upper plumage. The wings are brightly washed with olive and the under- 

 parts of the body are much paler than in typical occipitalis. As in that species the 

 lower mandible is pure black. 



The Siamese Grey-headed Green Woodpecker therefore constitute a well-marked 

 race. I ha ve had the pleasure of naming this new form in honour of Dr. Erich Hesse 

 who has made such a good work to the proper understanding of the geographical distri- 

 bution and the generic position of the species and subspecies of several Woodpeckers. 



Types of the subspecies: 



Adult male collected at Pak Koh, Northern Siarn 17 / s 1914. 



Adult female, collected at Den Chai, Northern Siarn I5 / 2 1912. 



The female is similar to the male but is lacking the red colour on the crown, which 

 is pure back. The general colouration is also slightly paler than that of the male. 



The Grey-headed Green Woodpeckers collected during my former journey 1911 

 1912 and by me referred to Picus canus occipitalis Vig. also belong to the new form, 

 as shown by a careful examination of a series. 



Picus canus hessei inhabits the forests of Northern Siarn and was never found in 

 the Siamese Malaya. It seems to prefer the deciduous forests to evergreen jungles. 



109. Brachylophus chlorolophus chlorolophus. Vieill. The Small Himalayan 



Yellow-naped Woodpecker. 



Pieus chlorolophus chlorolophus: Gyldenstolpe I p. 47; Gyldenstolpe II: Gyldenstolpe III p. 22H. 

 G-ecinus chloroloplius: Barton p. 106. 



<$ Bång Hue Pong % 1914. L = 245 mm.; W == 13(i mm.; T = 9G mm.; C = 27 mm. — 

 J Pak Koh 23 /s 1914. L = 243 mm.; W = 138 mm.; T = 118 mm.; C = 25 mm. — $ Pak Koh V* 1914. 

 I- = 255 mm.; W = 137 mm.; T = 116 mm.; C = 22,5 mm. J Doi Par Sakeng 14 /7 1914. L = 247 

 mm.; W = 128 mm.; T == 115 mm.: C : = 25 mm. — Irides: reddish hrown. Bill: black with the base yellow. 

 Legs: greenish olive. 



This species was rather common in the deciduous forests in the North of Siarn. It 

 was generally observed either single or in pairs. As already stated by Hargitt (Cat. 

 Birds Brit. Mus., Vol. 18 p. 60) the white spotting on the outer webs of the primaries is 

 very inconstant, and of the 6 specimens collected in Northern Siarn three arequite lacking 

 these spöts while in the other three specimens these spöts are quite distinct. 



170. Brachylophus chlorolophoides. Gyldenstolpe. 1 



Plate 2, tig. 3. 



J 1 Koon Tan :!, V, 1914. I, 255 mm.: W == 136 mm.: T = 104 mm.; C = 24 mm.; Tarsus = 18 

 inni. - - Tris: crinison. Bill: black, edges of the hase dirty yellow. Legs: lirownish yellow. 



Description: Adult male. 



Upper parts yellowish green, brighter on the rump and on the upper tail-coverts, 

 the whole upper plumage suffused with a golden shade; quills dusky brown, the inner 



1 Ornith. Monatsber. nu 6. No. 2, p. 29. 



