NO. 2282. BIRDS FROM SIMALUR ISLAND— 0BERH0L8ER. 481 



particularly the chin and upper throat, which are also more clearly 

 yellowish (less tinged with grayish). From Treron curvirostra peg a 

 Oberholser,^ of Nias Island, it is separable by somewhat larger size; 

 lighter pileum, nape, and rump; paler, more yellowish upper tail- 

 coverts; lighter, much more yellowish (less grayish) lower surface. 

 Measurements of this, the type specimen, are as follows: wing, 

 145 mm.; tail, 94; exposed culmen, 16.5; tarsus, 24,5; middle toe 

 without claw, 24. 



Family PSITTACIDAE. 



CONURUS FASCIATUS CALUS Oberholser. 



Gornfrtts fasciatus calus Oberholser, Smiths. Misc. Coll., vol. 60, No. 7, 

 October 26, 1912, p. 4 (Sibabo Bay, Siiualur Island, western Sumatra). 



Four specimens are in the collection : 



Adult male, type of the subspecies. No. 179664, U.S.N.M. ; Sibabo 

 Bay, October 21, 1902. 



Adult male. No. 179666, U.S.N.M. ; Sibabo Bay, October 25, 1902. 

 "Upper mandible red, tip yellow ; lower mandible dark brown ; feet 

 dull greenish leaden." 



Adult female. No. 179665, U.S.N.M. ; Sibabo Bay, October 22, 1902. 

 "Bill black." 



Adult female. No. 179667, U.S.N.M. ; Sibabo Bay, October 26, 1902. 



This recently described race differs from Coriurus^ fasciatus fas- 

 ciatus, of Tenasserim, in its much larger size; darker and duller 

 upper parts; darker, duller, rather more bluish posterior lower 

 parts; and, in the male, paler anterior lower parts; in the female, 

 duller and usually lighter anterior lower surface. From Gonuruf) 

 fasciatus peHoncus,^ of Nias Island, it may be distinguished by its 

 somewhat smaller size; darker upper parts, especially the pileum; 

 darker, more bluish posterior lower surface; and darker, duller 

 throat and breast. 



The females differ from the males in having a wholly black or 

 brownish black bill (lacking the red maxilla or having at most but 

 a tinge of reddish on the base of the culmen) ; somewhat darker and 

 duller upper parts; and lighter, more pinkish, less lavender-washed 

 breast and jugulum. The moderate amount of individual variation 

 affects principally the shade of the pileum, breast, jugulum, and 

 posterior lower surface. 



Measurements of our entire series from Simalur Island are added 

 here for purposes of comparison. 



1 SmUhs. Misc. Coll., vol. 60, No. 7, October 26, 1912, p. 4. 



* For the change of generic name from Palaeornis to Oonurus, see Oberholser, Smiths. 

 Misc. Coll., vol. 60, No. 7, Oct. 26, 1912, p. 4. 



62055— 20— Proc.N.M.vol.55 32 



