BIRDS FROM SIAM AND THE MALAY PENINSULA 123 



Family CUCULIDAE: Cuckoos 



CUCULUS MICROPTERUS CONCRETUS S. Muller 



Cuculus concrcius S. Muller, Verhandelingcn over de natuurlijke Geschiedenis 

 der Nederlaiidsche overzeesche bezittingen . . . , p. 236, 1845 (Borneo). 



Dr. W. L. Abbott collected a single male in Trang, February 24^. 

 1899. He describes the soft parts as follows: Iris dark brown; bill 

 black above, greenish beneath; orbital ring yellow; feet yellow. 



This is a small dark race of C. m. micropterus. The male from 

 Trang measures: Wing, 177; culmen, 23 mm. 



Three males of C. m. microiJterus from China measure: Wing, 208- 

 209 (208.5) mm; culmen, 25-27 (26.3) mm. Three females: Wing, 

 207-214 (210.7); culmen, 25-27.5 (26.3) mm. 



The United States National Museum contains also the following- 

 specimens of C. m. concretus: One male, Baguio, Benquet, Luzon, 

 April 27, 1907; one female, Siak River, eastern Sumatra, January 3,. 

 1907; one male, Tana Bala, Batu islands, off western Sumatra, 

 February 11, 1903; one immature, Malacca. 



The form ranges apparently from Peninsular Siam to the Malay 

 States, Sumatra, and adjacent islands, Java, Borneo, and the Philip- 

 pines (Luzon). Dr. Abbott's specimen is the first record of C. m, 

 concretus from Peninsular Siam, but the immature from Malacca 

 brings up the question whether it is not the resident form in Peninsular 

 Siam and farther south. 



The specimen listed above from the Batu Islands is grayer above 

 than the other three adults, but whether this difference is individual 

 or geographic, I cannot tell. All four adults of concretus are darker 

 above and considerably smaller than the series of six adults of wicroj)- 

 terus from China. The measurement of the Trang specimen is given 

 above. The other three m.easure: Male, Luzon — wing, 179; culmen, 

 26. Male, Batu Islands — wing, 188; culmen, 21. Female, Siak 

 River, eastern Sumatra — wing, 194; culmen, 22 mm. 



No specimens have been available from Borneo or Java for examina- 

 tion. 



HIEROCOCCYX SPARVERIOIDES SPARVERIOIDES (Vigors) 



Cuculus sparverioides Vigors, Proc. Zool. Soc. London, 1832, p. 173 (Himalayas). 



One male, Pak Chong, eastern Siam, February 18, 1924. 



Dr. Smith gives the following note on the colors of the soft parts: 

 Iris brownish yellow; bill black above, dark green below; legs yellow. 



Gyldenstolpc '^- reports it rather rare at Khun Tan; Deignan ^^ 

 records it from Doi Sutep, 2,700-5,500 feet. Lowe ^^ lists it from Um 



•* Kungl. Svenska Vet.-Akad. Uandl., vol. 56, no. 2, p. 102, 1916. 

 M Jour. Siam Soc. Nat. Hist. Suppl., vol. 8, p. 159, 1931, 

 " Ibis, 1933, p. 477. 



