322 DICETJEID7E. 



Buchanga andamanensis (Tytl\ WaU. His, 1873, p. 310. 

 Dissemuroides andamanensis (Tytl.~), Hume, S. F. ii, p. 211; Sharpe, 



Cat. B. M. iii, p. 255 ; Tweedd. Ibis, 1878, p. 77; Hume, Cat. no. 



283 ter. 



Coloration. Black with a greenish-blue gloss over most of the 

 plumage; primaries and secondaries brown; under wing-coverts 

 and axillaries tipped with white. 



Bill, legs, and feet black; iris hair-brown, sometimes very deep 

 and almost blackish (Hume}. 



Length about 11-5 ; tail 6'5 ; wing 5-3 ; tarsus -9 ; bill from 

 gape 1-3 ; depth of fork of tail about 2. 



Distribution. Port Blair and Macpher son's Straits and probably 

 other parts of the Andaman Islands. 



Habits, $c. Apparently the same as those of Dicrurus ater. 



337. Dissemuroides dicruriformis. The Large Andamanese 

 Drongo. 



Dissemuroides dicruriformis, Hume, S. F. i, p. 408 (1873) ; ii, 

 p. 211 ; Sharpe, Cat. B. M. iii, p. 255 ; Tweedd. Ibis, 1878, p. 77; 

 Ifrtme, Cat. no. 283 bis. 



Coloration. Resembles D. andamanensis in all respects except 

 that of size. 



Bill, legs, and feet black; iris dark brown (Hume). 



Length about 14 ; tail 8 ; wing 5'8 ; tarsus 1 ; bill from gape 

 1-45. 



Distribution. The Great Coco and Table Islands in the Andaman 

 group. 



Habits, c. Davison remarks that this species has the habits of 

 the Dicruri. 



Genus DISSEMURULUS, n. gen, 



I propose the above generic name for a bird which has hitherto 

 been tossed about between the genera Dissemurus, Dissemuroides, 

 and Dicrurus. Dissemurulus lophorhinus, the type and sole member 

 of the genus, is characterized by the possession of a tuft of ordinary 

 feathers, about half an inch long, on the forehead. This character 

 separates it from the last two genera mentioned above, and it is 

 separated from Dissemurus by the deeply forked tail, the outermost 

 feathers of which are neither produced to an extraordinary 

 length, nor have a bare shaft with a short length of terminal web. 



338. Dissemurulus lophorhinus. The Ceylon Black Drongo. 



Dicrurus lopliorinus, Vieill. Nouv. Diet. JHist. Nat. ix, p. 587 



(1817) : Walden, Ibis, 1807, p. 4C8. 

 Dicrurus edolifornris, Blytlt, J. A. S. B. xv, p. 297 (184G) ; id Cat 



p. 202 ; id. Ibis, 1807, p. 305. 



