NO. 1803. HYPOTHYMIS AND CYAN0NYMPHA—0BEBH0L8EB. 



603 



blue; axillars grayish white, shaded with blue; thighs slate grayish, 

 washed with blue; "feet blue; bill blue, black at tip." 



Measurements. — Ten males: Wing, 75.5-80 (average, 77.7); tail, 

 76-80 (average, 77.3); exposed culmen, 10-12 (average, 11.4); tarsus, 

 16-18 (average, 17). Six females: Wing, 74.5-78 (average, 76.4); 

 tail, 74-78 (average, 76.1); exposed culmen, 11-12 (average, 11.4); 

 tarsus, 16-17.5 (average, 16.6) mm. 



Type-locality. — Pulo Piling, Anamba Islands. 



Geograyliical distribution. — Anamba and Tambelan islands. 



This new form is similar to Hypotliymis azurea pro])liata, but much 

 larger, and has the posterior lower parts, with the axUlars, usually 

 more extensively shaded with blue. In some respects of color it 

 resembles Hypothymis azurea tytleri, from the Andaman Islands, but 

 is easily distinguishable from that race by its larger size, and, in the 

 male, by the greater contrast between pileum and back, and the 

 more whitish median portion of abdomen. It differs from Hypothy- 

 mis a. calocara and H. a. idiochroa in larger size, darker, more purplish 

 upper and lower surfaces of the male, and in much more deeply 

 bluish crissum. In addition, it may be distinguished from H. a. 

 calocara by its paler pileum, much more contrasted with the back. 

 It seems to be one of the best marked subspecies of Hypotliymis 

 azurea, and in size is approached by only one other. Birds from the 

 Tambelan Islands seem to be absolutely identical with those from 

 the Anamba Islands. 



Measurements of specimens of Hypothymis azurea opisthocyanea examined. 



a Measured in the flesh by the collector. 



6 Type. 



