286 BULLETIN 17 2, UNITED STATES NATIONAL MUSEUM 



CHIBIA HOTTENTOTTA HOTTENTOTTA (Linnaeus) 



Corvus hotlentottus Linnaeus, Systema naturae, cd. 12, p. 155, 17G6 (Cape of 

 Good Hope, error; south-central Siam, as fixed by Kloss"). 



Three males and three females, Ban Nam Kien, Nan, April 18-22, 

 1930; one male, Muang Kanburi, September 10, 1928; one male, 

 Kanburi, September, 1929; one female, Wang Kien, near Kanburi, 

 March 13, 1934; two females, Bangkok, December 31, 1924, Decem- 

 ber 2, 1925; two males, Lomkao, February 21, 1934; five males, five 

 females, and two young, Pak Chong, February 22, 1924, May 6, 7, 

 1925; March 2, April 29, May 2-9, and December 19, 1926, December 

 8, 1929, June 21, 1934; one female, Lam Klong Lang, Pak Chong, 

 June 14, 1925; two males, Tha Chang, Pak Chong, March 20,22, 1927; 

 one male and one female, Sikeu, near Korat, February 17 and March 

 2, 1926; one male, Chantuk, June 7, 1934; one male, Lat Bua Kao, 

 August 10, 1929; one male and one female, Muek Lek, April 25, 1933; 

 one male and one female, Knong Phra, April 13, 15, 1929; one male, 

 Sakon Nakon, March 10, 1929; one male, Kao Sabap, November 20. 

 1933; two males, Koh Chang, Januar}' 9, 13, 1926. 



Dr. W. L. Abbott collected one male and eight females, Bok Pyin, 

 Tenasserim, February 13-17, 1900. He gives the soft parts as: Iris 

 dark red, reddish brown, or dark brown; bill and feet black. 



This is the resident form, and it apparently occurs all over Siam 

 proper, but how far south it extends in the southwest is not well 

 known. 



Dr. Smith took a pair of half-grown young at Pak Chong, May 9, 

 and an older immature at Lam Klong Lang, June 14. A female taken 

 at Bangkok, December 31, has the chin, part of the forehead and 

 crown, all the greater wing coverts on the left wing, and the majority 

 of the greater wing coverts on tlie right wing white. 



This form has an average shorter wing but longer and heavier bill 

 than C. h. brevirostris. 



Ten males from Siam measure: Wing, 161-175 (167.4); tail, 129- 

 145.5 (137.6); culmen, 35-37.5 (35.8) mm. Ten females from Siam: 

 Wing, 152-167 (159.3); tail, 126-142 (134); culmen, 32.5-36 (34) mm. 



The form ranges from the Indian Peninsula eastward to Siam and 

 Indo-China. Dcignan *^ says that in the Chiengmai region it seems 

 to be present in cold weather in the dry forest up to 2,500 feel; de 

 Schauensee ^^ found it not very common on the lowlands and foothills 

 of northern Siam. Dr. Smith secured it only at Ban Nam Kien in 

 the northern part of the country. The majority of his specimens 



" Journ. Federated Malay States Mus., vol. 10, p. 223, 1921. 

 w Journ. Siam Soc. Nat. Hist. Suppl., vol. 8, p. 147, 1931. 

 •• Proc. Acad. Nat. Sci. Philadelphia, vol. 86, p. 220, 1934. 



