KUNGL. SV. VET. AKADEMIFNS HANDLINGAR. BAND 56. N:0 2. 39 
The dimensions of the tails in the Siamese specimens are considerably greater 
(with the exception of one male) than the measures given by HeLimayr (Tierreich Vol. 
18 p. 194) who gives the tails as measuring from 37 to 40 mm., and in the key to the 
Genus in Wytsman’s Genera Avium part. 16 p. 13, the same author says that the tails 
in Dendrophila frontalis and its subspecies never exceed 40 mm. 
The central tail-feathers in my specimens are without any black marks, being al- 
most bluish grey. 
Fam. Paride. 
57. Melanochlora sultanea < flavocristata. — The Sultan Bird. 
Melanochlora sultanea: Gairdner p. 148; Grant p. 76; Miller p. 372. 
Melanochlora flavocristata: Robinson & Kloss p. 70; Robinson III p. 108. 
Melanochlora sultanea flavocristata: Gyldenstolpe II; Gyldenstolpe III p. 166. 
Sex Locality Date | Length | Wing Tail Culmen | Tarsus 
mm. mm. mm. mm. mm. 
a Pak Koh *8/3 1914 190 104 95 13 18,5 
rofl Koon Tan 29/5 1914 196 lll 102 13 20 
roe Pak Koh 8/4 1914 190 111 95 13 20 
(of Pak Koh 20/3 1914 186 108 7 13 19,5 
rol Pak Koh 18/3 1914 185 106 96 13 20 
ou Doi Par Sakeng | '%/r 1914 177 106 95 12,5 18 
Trides: brown. Bill: black. Legs: plumbeous. 
The specimens of the Sultan Bird obtained in Northern and Northwestern Siam 
are almost intermediate between the typical M. sultanea and the southern race M. flavo- 
cristata LAFR. 
This last-mentioned race inhabits the central parts of Siam. WM. s. flavocristata 
only differs from the typical M. sultanea in being smaller. Hetimayr (Tierreich Vol. 
18 p. 31) gives the wings in J as measuring 100—107 mm. in the southern form, while 
the northern form have wings measuring 110—115 mm. according to the same author. 
As seen by the measurements taken on the birds in my collection these specimens 
are practically intermediate between the two forms, which probably meet in the North 
of Siam. 
Down in the Siamese Malaya I never observed this species: As a rule the Sultan 
Birds associate with Bulbuls and were generally found in small parties together with 
these birds. 
Fam. Laniide. 
58. Lanius tigrinus. Drap. — The Thick-billed Shrike. 
& Koon Tan */s 1914. L = 175 mm; W = 84 mm.; T = 78 mm.; C = 14 mm. — Irides: brown. 
Bill: black. Legs: brownish grey. 
