THE BIRDS OF NORTHERN THAILAND 521 



The adult, as seen in April and May after the complete prenuptial 

 molt, has the lores, ocular region, and ear coverts black, edged above by 

 a pure white supercilium; the crown soft reddish brown, fading to 

 white on the forehead ; the remaining upperparts brown, suffused with 

 rufous on the upper tail coverts and rectrices ; the wings blackish brown, 

 the coverts and secondaries narrowly margined with rufous-brown, the 

 primaries usually with no sign of a speculum ; the chin and throat white, 

 changing to rich buff on the remaining underparts. Winter birds 

 have the upperparts similar but duller throughout and the forehead 

 concolorous with the crown ; the underparts wholly buffy white. Most 

 Thai examples are immature; they have narrow, wavy blackish bars 

 more or less conspicuous on the upperparts and similar blackish-brown 

 bars on the breast and flanks. 



LANIUS CRISTATUS LUCIONENSIS Linnaeus 



Chinese Brown Shrike 



[Lanius] lucionensis Linnaeus, Systenia naturae, ed. 12, vol. 1, 1766, p. 135 



(Luzon, P. I.). 

 Lanius lucionensis, Gyldenstolpe, Journ. Nat. Hist. Soc. Siani, 1915, p. 167 



(listed). 

 Otomela cristata lucionensis, Gyldenstolpe, Ibis, 1920, p. 469 ("Northern 



Siam"). 



I have examined in Stockholm the only specimen of the Chinese 

 brown strike yet known from our area; it is a female, collected by 

 Eisenhofer at Khun Tan sometime in 1913. The race is scarcely more 

 than a straggler to Thailand, and is not likely to occur at all west 

 of the Khun Tan range. 



From cristatus, lucionensis differs strikingly in having the fore- 

 head and forecrown ashy, this color changing gradually on the hind- 

 crown and nape to the cold gray-brown of the mantle; the wing 

 feathers with paler edgings (almost white on the secondaries) ; the 

 rufous of the upper tail coverts and rectrices duller and grayer. 



LANIUS TIGRINUS Drapiez 



Tigrine Shrike 



Lanius tigrinus Drapiez, in Dictionnaire classique d'histoire naturelle, 6d. Bory 



de Saint-Vincent, vol. 13, 1828, p. 523 (Java). 

 Lanius tigrinus, Gyldenstolpe, Kungl. Svenska Vet.-Akad. Handl., 1916, p. 39 



(Khun Tan) ; Ibis, 1920, p. 468 (Khun Tan).— Riley, U. S. Nat. Mus. Bull. 



172, 1938, p. 481 (Phrae). 



The present species is evidently a rather rare migrant through the 

 provinces east of (and including) the Khun Tan chain. Gylden- 

 stolpe mentions (1916) having seen several in the mountainous re- 

 gions of northern Thailand and he collected an adult male at Khun 



