284 BULLETIN 186, UNITED STATES NATIONAL MUSEUM 



prove to be inseparable from sylvicola of South India ; at this time I 

 have not enough material of the latter race to form a definite opinion. 



CAMPEPHAGA FIMBRIATA POLIOPTERA Bowdler Sharpe 



Indo-Chinese Gray Caterpillar-shrike 



Campophaga [sic] polioptera Bowdler Sharpe, Catalogue of the birds in the 



British Museum, vol. 4, 1879, p. 69 (Cochin-China). 

 Campophaga melanoptera, Gyldenstolpe, Journ. Nat. Hist. Soc. Siam, 1915, 



p. 168 (listed). 

 Volvocivora melanoptera avensis, Gyldenstolpe, Kungl. Svenska Vet.-Akad. 



Handl., 1916, p. 71 (Khun Tan). 

 Volvocivora luguoris saturata [partim], Gyldenstolpe, Ibis, 1920, p. 569 (Khun 



Tan [partim] ) . 

 Lalage melaschista avensis [partim], de Schauensee, Proc. Acad. Nat. Sei. 



Philadelphia, 1929, p. 551 (Doi Suthep [partim]) ; 1934, p. 225 (Doi Suthep 



[partim], Mae Taeng, Chiang Dao, 55 km. northeast of Lampang). — 



Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 1931, p. 147 (Doi Suthep 



[partim]). 

 Lalage melaschista [partim], Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 



1936, p. 101 (Doi Suthep [partim]). 

 Volvocivora melanoptera [partim], Riley, U. S. Nat. Mus. Bull. 172, 1938, p. 



273 (Doi Hua Mot, Doi Langka, Khun Tan [partim]). 



The present form of the gray caterpillar-shrike is a rather common 

 resident of the more open evergreen, possibly throughout our area. 

 On the hills of the Thanon Thong Chai range it has been found be- 

 tween 2,500 and 4,500 feet, but in districts where the jungle is suitable it 

 occurs also on the plains, at least in winter. 



This bird is found singly or in pairs, quietly hunting for cater- 

 pillars and other insects along the branches of the lower trees, at 

 the edge of the forest or beside the trails — in fact, inhabiting much 

 the same places as Hemipus. 



Nothing certain is known of the breeding season, but specimens 

 in postnuptial molt have been taken between August 20 and 

 November 19. 



My examples had the irides bright brown (males) or brownish 

 red (females) ; the bill black (males) or horny brown (females) ; the 

 feet, toes, and claws slaty black (males) or blackish brown (females). 



The adult male has the general coloration, above and below, slate 

 gray, fading gradually to white on the under tail coverts; the rem- 

 iges black, outwardly margined with slate gray and narrowly tipped 

 with grayish white; the inner primaries often with an indefinite 

 white area near the center of the inner web (invisible in the closed 

 wing) ; the central pair of tail feathers slate gray with an indefinite 

 blackish area near the tip along the shaft, the remaining pairs black, 

 broadly tipped with white. The adult female differs in having a 

 narrow eye ring of white feathers ; the ear coverts and the feathers 



