82 BULLETIN 186, UNITED STATES NATIONAL MUSEUM 



winter in India, it appears to be impossible to allocate Latham's name 

 calidus. In default of suitable comparative material, I follow Fried- 

 mann (MS.) in employing the name harterti for Thai birds. An adult 

 male in Washington, taken by Oates near Pegu, February 2, 1877, 

 agrees perfectly with a similar specimen from Thailand. 



A resident form of the peregrine, the shahin, F. p. peregrinator, 

 with ferruginous underparts, may be found eventually in the moun- 

 tains of western Thailand ; it should be watched for especially in the 

 gorges of the Mae Ping. 



FALCO SEVERUS SEVERUS Horsfield 

 RUFOUS-BELLIED HOBBY 



Falco severus Hoksfield, Trans. Linn. Soc. London, vol. 13, 1821, p. 135 (Java). 



Falco severus severus, Deignan, Jonrn. Siam Soc. Nat. Hist. Suppl., 1931, p. 165 

 (Doi Suthep) ; 1936, p. 78 (Chiang Mai, Doi Suthep). — de Schauensee, 

 Proc. Acad. Nat. Sci. Philadelphia, 1934, p. 269 (Chiang Mai). 



This pretty hobby seems to be a rather rare permanent resident, 

 although perhaps restricted to the more western provinces. I saw 

 one at 1,800 feet on Doi Suthep, June 14, 1930 ; de Schauensee took a 

 male at Chiang Mai, December 23, 1932 ; I collected a subadult female 

 at Ko Klang, near Chiang Mai, October 14, 1935. The "small unidenti- 

 fied falcon sometimes seen in the summer months" at Chiang Mai, 

 which in 1936 1 supposed to be a kestrel, probably belongs to the present 

 species. 



The stomach of my specimen contained feathers of an unidentifiable 

 bird. 



I have noted that it had the irides brown ; the orbital region yellow ; 

 the cere yellow; the maxilla slaty black; the mandible yellow-horn, 

 tipped slaty ; the rictus yellowish flesh ; the feet and toes deep yellow ; 

 the claws black. 



The adult has the crown, sides of the head, nape, and upper back 

 slaty black, changing to slaty blue on the remaining upperparts; 

 the throat and sides of the neck white, more or less washed with 

 rufous; the remaining underparts deep rufous. The immature differs 

 chiefly in having the underparts boldly streaked with black every- 

 where except on the throat and neck. 



FALCO TINNUNCULUS TINNUNCULUS Linnaeus 



> 



European Kestrel 



[Falco] Tinnunculus Linnaeus, Systema naturae, ed. 10, vol. 1, 1758, p. 90 (Europe; 

 type locality restricted to Sweden, apud Hartert). 



Two of my specimens, a male taken at Chom Thong, November 8, 

 1935, and a female shot at the roadside about 21 km. north of Chom 

 Thong, November 16, 1935, are distinguishable by their pale coloration 



