612 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. 39. 



The male of this well-marked form may be distinguished from 

 H. a. coeruleocepJiala by its darker, more purplish blue upper surface 

 and anterior lower parts, wholly blue posterior lower parts; more 

 grayish and bluish axillars, and more nearly uniform upper surface; 

 from H. a. azurea by larger size, blue abdomen, flanks, and crissum, 

 rather paler upper surface, darker pileum less contrasted with the 

 back, and more grayish, bluish axillars; from H. a. cdlocara and H. a. 

 idiochroa by its darker, more purplish blue above and below, more 

 extensively and deeply bluish abdomen and crissum, more grayish 

 and bluisli axillars, as well as additionally from the latter by darker, 

 less contrasted pileum, and from the former by larger size; from 

 H. a. opisthocyanea by smaller size, more uniformly blue abdomen, 

 less contrasted pileum, and more bluish and grayish axillars ; and from 

 H. a. forrestia by smaller size, blue posterior lower parts, lighter 

 upper surface, except pileum, which is less contrasted with the back, 

 and by more grayish and bluish axillars. The female of H. a. tytleri 

 is darker on both back and breast and less whitish on abdomen than 

 the same sex of H. a. prophata. An adult male from Little Andaman 

 Island seems to incline not at all toward Hypothymis a. idiochroa 

 from the island of Car Nicobar. Count Salvadori has recorded 

 H. a. tytleri from Engano Island, '^ but the bird occurring there is, of 

 course, Hypothymis azurea richmondi.^ 



Measurements of specimens of Hypothymis azurea tytleri examined. 



c Measured in the flesh by the collector. 

 HYPOTHYMIS AZUREA CONSOBRINA Richmond. 



Hypothymis consobrina Richmond, Proc. Biol. Soc. Wash., vol. 15, 1902, p. 189. 



Chars, subsp. — Similar to Hypothymis azurea tytleri, but averaging 

 decidedly smaller; and pileum darker, less contrasted with the back. 



Measurements. — Six males: Wing, 68-71.5 (average, 69.4); tail, 

 66-70.5 (average, 68.3); exposed culmen, 10-12 (average, 11); 

 tarsus, 16-17.5 (average, 16.8) mm. 



Type-locality. — Simalur Island, western coast of Sumatra. 



a Ann. Mus. Civ. Genova, vol. 32, 1892, p. 129. 



&Seep. 613. 



