KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 56. NIO 2. 



39 



The dimensions of the tails in the Siamese specimens are considerably greater 

 (with the exception of one male) than the nieasurcs given by Hellmayr (Tierreicli Vol. 

 18 ]). 194) who gives the tails as mcasuring 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 f rontalis and its subspecies ne ver exceed 40 mm. 



The central tail-feathers in my specimens are without any black marks, being al- 

 most bluish grey. 



Fain. Paridae. 



57. Melanochlora sultanea $ flavocristata. 



The Sultan Bird. 



Melanochlora sultanea: Gairdner p. 148; Grant p. 76; Muller p. 372. 

 Melanochlora flavocristata: Robinson & Kloss p. 70; Robinson III p. 108. 

 Melanochlora sultanea flavocristata: Gyldenstolpe II; Gyldenslolpe III p. 160. 



Sex 



Locality 



Date 



Length 



Wing 



Tail 



Culmen 



Tarsus 









mm. 



mm. 



mm. 



mm. 



min. 



ef 



Pak Koh 



23 / 3 1914 



190 



104 



95 



13 



18,5 



ef 



Koon Tan 



M /s 1914 



19(5 



111 



102 



13 



20 



ef 



Pak Koh 



'»/« 1914 



190 



111 



95 



13 



20 



ef 



Pak Koli 



■°h 1914 



180 



108 



97 



13 



19,5 



ef 



Pak Koh 



18 /s 1914 



18. r i 



100 



96 



13 



20 



ef 



Doi Par Sakeng 



'»A 1914 



177 



106 



95 



12,5 



18 



Irides: brown. Bill: black. Legs: plumbeous. 



The specimens of the Sultan Bird obtained in Northern and Northwestern Siarn 

 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 Siarn. M. s. flavocristata 

 only differs from the tyj>ical M. sultanea in being smaller. Hellmayr (Tierreicli Vol. 

 18 p. 31) gives the wings in ef as measuring 100 — 107 mm. in the southern form, while 

 the northern form ha ve 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 Siarn. 



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. Laniidae. 



58. Lanius tigrillUS. Dräp. — The Thick-billed Shrike. 



c? Koon Tan 4 /& 1914. L = 175 mm.; W = 84 mm.; T = 78 mm.; C = 14 mm. 

 Bill: black. Legs: brownisb grey. 



Irides: brown. 



