NO. 2276 REVISION OF SAUROPATIS CHLORIS—ODERHOLSER. 373 



Ti/pe locality. — Siam.^ 



Geographic dhtribution. — Indo-Malayan region, north to soiiih- 

 ern Siam, coast region of Biirmah, and the southeastern part of 

 Bengal, India (Sunderbiinds) ; west to the Sunderbimds, the west- 

 ern coast of the Mahiy Peninsula and its islands, including the 

 Mergui Archipelago and Pulo Lankawi; south to the southern Malay 

 Peninsula, the island of Singapore, and Cochin China; and east to 

 the eastern coast of the Malay Peninsula and Cochin China. 



Remarks. — This is a form undoubtedly worthy of recognition, 

 though not a species as often regarded ; it is one of the smallest sub- 

 species of Sauropatis chloris. From Sauropatis chloris palmeri of 

 Java, it differs by reason of its much reduced size, also, in the male, 

 by usually more bluish upper parts, and, in the female, by its more 

 greenish upper surface. It may be separated from /Sauropatis 

 chlo7^ collaris by its much smaller size, much more bluish upper 

 surface, and somewhat more evident black nuchal band in the male; 

 and ordinarily darker, more greenish upper parts, with wider black 

 nuchal band in the female. It may be distinguished from Sauropatis 

 chloris forsteni by its smaller size, also, in the male, by its much more 

 bluish upper parts, more greenish ear-coverts, and narrow^er, black 

 nuchal band; in the female by the somewhat wider black nuchal 

 band and more greenish auriculars. Compared with Sauropatis 

 chloris chloris it is much smaller, with, in the male, the wings more 

 bluish, the upper surface averaging darker, the black nuchal band 

 much narrower or obsolescent, the ear-coverts more greenish, and 

 the sides and flanks conspicuously buffy ; and, in the female, the wings 

 decidedly more bluish and more contrasted with the back, the upper 

 parts averaging darker, the black nuchal band narrower, and the 

 auriculars more greenish. 



A single specimen marked " India " is larger than any other of 

 our present series, but is otherwise not different. Birds from the 

 Mergui Archipelago apparently do not differ from those found on 

 the near-by Malay Peninsula. 



Examples from Cochin China and Siam are, in both size and 

 color, apparently identical with birds from the Malay Peninsula. I 

 am, in fact, unable to find any satisfactory differences between speci- 

 mens from various localities — Siam, Burmah, and the central and 

 southern Malay Peninsula — to warrant at present any further racial 

 subdivision. Thus I am not able to distinguish Sauropatis humii, 

 even as a subspecies, since tj'pical examples of both Satiropatis 

 chloris armstrongi and so-called humii occur throughout the same 

 regions, together with various intermediates which completel}' oblit- 

 erate the significance of the characters assigned to separate the two 



*Type in British Museum. 



