332 BULLETIN 18 6, UNITED STATES NATIONAL MUSEUM 



The whole of Thailand is occupied by erythrotis : 19 adult males from 

 the six northernmost provinces have the wing length 76.5 to 87 mm. ; 

 15 from the Peninsula (south of the Isthmus of Kra), 75.9 to 84.5 mm. 



PYCNONOTUS CAFER KLOSSI (Gyldenstolpe) 



Thai Red-vented Bulbul 



Molpastes atricapillus klossi Robinson, error=GYLDENSTOLPE, Bull. Brit. Orn. 



Club, vol. 41, 1920, p. 12 (Khun Tan, North Thailand) ; vol. 42, 1921, p. 32. 

 Pycnonotus atricapillus, Gyldenstolpe, Kungl. Svenska Vet.-Akad. Handl., 



1913, p. 26 (Pak Pan) ; Journ. Nat. Hist. Soc. Siam, 1915, p. 166 (listed). 

 Molpastes atricapillus, Gyldenstolpe, Kungl. Svenska Vet.-Akad. Handl., 1916, 



p. 68 (Khun Tan, Tha Chomphu) ; Ibis, 1920, p. 492 ("Throughout northern 



Siam"). 

 Molpastes haemorrhous chrysorrhoides, de Schauensee, Proc. Acad. Nat. Sci. 



Philadelphia, 1929, p. 540 (Chiang Mai, Doi Suthep, Chiang Rai, Chiang 



Saen). 

 Molpastes cafer chrysorrhoides, Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 



1931, p. 140 (Doi Suthep, Chiang Mai, Chiang Rai). 

 Pycnonotus cafer klossi, de Schauensee, Proc. Acad. Nat. Sci. Philadelphia, 1934, 



p. 205 (Mae Taeng, Khun Tan, Chiang Dao, Chiang Mai). — Gbeenway, 



Bull. Mus. Comp. Zool., 1940, p. 176 (Doi Nang Kaeo). 

 Pycnonotus cafer chrysorrhoides, Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 



1936, p. 110 (Doi Suthep, Chiang Mai). 

 Molpastes cafer klossi, Riley, U. S. Nat. Mus. Bull. 172, 1938, p. 384 (Doi Ang Ka, 



Chiang Mai, Khun Tan, Mae Hong Son). 



Throughout the northern provinces, the red-vented bulbul is locally 

 common, occurring on the plains in pa daeng and areas of abandoned 

 cultivation, on the hills to 5,500 feet in open forest of oak and pine. 



At Chiang Kai this bulbul proved to be as familiar a garden bird 

 as Pycnonotus j. erythrotis is elsewhere; otherwise I have found it 

 to be a rather retiring species, keeping to dry but more or less wooded 

 country and avoiding the neighborhood of human habitation. Its 

 notes and habits are much like those of the red-whiskered bulbul. 



A specimen with the gonads slightly enlarged was taken on April 

 4, another with them greatly enlarged, July 13. Examples in post- 

 juvenal molt were collected between July 6 and October 20; adults 

 in postnuptial molt, between September 28 and November 2. 



A breeding male had the irides hazel ; the bill black ; the feet and 

 toes black ; the soles gray ; some claws black, the others fleshy white. 



The adult has the forehead and slightly crested crown glossy 

 black; the upper parts ashy brown, the feathers of the mantle with 

 somewhat darker centers; the rump and shorter upper tail coverts 

 white or ashy; the rectrices blackish brown, broadly tipped with 

 white; the lores, a narrow subocular line, the chin, and upper throat 

 blackish brown; the ear coverts ashy; the underparts ashy, more or 

 less suffused everywhere with brownish ; the under tail coverts crim- 



