14 PROCEEDINGS OF THE NATIONAL MUSEUM vol.75 



EURYSTOMUS ORIENTALIS CALONYX Sharpe 



Eurystonms calonyx Shabpe, Proc. Zool. Soc. London, 1890, p. 551 (Nepal). 

 Eurystamus orientalis calonyx Chasbn and Kloss, Ibis, 1926, p. 280. 



One male, Sipora, October 29. 



This specimen is quite dark, especially the head and upper back. 

 It agrees more nearly with the form found in northeast China than 

 with any of the other forms into which the species has been divided. 

 It is evidently a bird of the year ; the maxilla is blackish, red only at 

 the base. The wing measurement given by Chasen and Kloss (281) 

 is much too large; I make it, 195. 



RAMPHALCYON CAPENSIS ISOPTERA Oberholser 



Ramphalcyon capensis isoptera Obeeholsee, Proc. U. S. .Nat. Mus., vol 35, 



1909, p. 671 (Sikakap Strait, Pagi Islands). 

 Rhamphalcyon capensis Chasen and Kloss, Ibis, 1926, p. 280. 



One adult male and two adult females, Siberut; six adult males 

 and one immature male, Sipora. 



The above series represents two phases, a dark-headed and a light- 

 headed one, but I do not think they are different forms. Neither 

 phase seems to be confined to one island and the measurements show 

 no difference. The series from the Pagi Islands show the two 

 phases. The blue of the rump and back in the Siberut birds is a 

 little bit deeper than in those from Sipora, but the difference is 

 very slight. Taking the Siberut-Sipora series as a whole they agree 

 rather closely with R. c. isoptera of the Pagi Islands, both in color 

 and size. The Siberut-Sipora series have a wing, 146.5-158.5; cul- 

 men, 77.5-85 mm. The Pagi Island birds, wing, 148-159; culmen, 

 77.5-87 mm. 



Ramfhalcyon capensis nesoeca Oberholser from Nias Island has a 

 lighter-colored head than isoptera. 



Ramphalcyon capensis sitnalurensis Richmond of Simalur is much 

 darker below, with the mantle more brownish than in isoptera. 



Ramphalcyon capensis sodalis Richmond from Pulo Tuangku, 

 Banjak Islands, is a larger, bluer-backed edition of simalurensis. 



So far as known, there are four more or less well-marked races of 

 this kingfisher on the islands off the west coast of Sumatra from 

 Simalur south to the Pagi Islands, as given above. No form has 

 been described from Engano, the most isolated island of the group. 



ALCEDO ATTUIS BENGALENSIS Gmelin 



Alcedo bengalensis Gmelin, Syst. Nat., vol. 1, pt. 1, 1788, p. 450 (Bengalen). 

 Alcedo atthis bengalensis Chasen and Kloss, Ibis, 1926, p. 281 (Siberut). 



One female, Siberut, September 27. 

 Probably a migrant. 



