594 Mr. W. R. Ogilvie-Grant on Birds 



flanks uniform yellowish-green, even in the most brightly- 

 coloured specimens. The bird described by Dr. Sclater 

 [Cat. B. Brit. Mus. xiv. p. 453 (1888)] as the adult of 

 X. gilviventris v. Pelz. is the immature type specimen of 

 X. stokesi. 



In both examples of X. stokesi the scale covering the 

 front of the tarso- metatarsus is entire. 



The wing measures 24 inches in the adult bird and 2*25 

 in the immature type specimen. 



99. Xenicus gilviventris v. Pelz. 



Xenicus gilviventris Buller, B. New Zeal. i. pt. iii. p. Ill, 

 pi. iv. (1888); Grant, Bull. B. 0. C. xv. no. cix. p. 16 

 (1904). 



a-c. Adult et immature. Lake Te Anau, Otago District, 

 South I., New Zealand, March 1903. 



d. $ adult. Long Sound, Otago District, March 1897. 



e. ? adult. Long Sound, Otago District, 20th April, 

 1897. 



I have examined 21 examples of this species, the majority 

 of which have been kindly lent me by Mr. Walter Rothschild. 

 The fully adult male and female do not differ from one 

 another in plumage, the upper parts being greenish-olive, 

 shading into greyish-brown on the crown. Immature 

 specimens of both sexes have the upper parts dull yellowish- 

 brown, shading into umber on the crown. A specimen in 

 the Tring Museum (Buller), which appears to be in a still 

 younger stage of plumage, has the upper parts tinged with 

 dull greenish. 



The wing measures 2*0 inches. 



As I have already pointed out, two species of Acanthidositta 

 occur in New r Zealand and have been united by Sir Walter 

 Buller under the name of A. chloris. Thanks, however, 

 to the specimens sent home by Lord Ranfurly it is now 

 clear that A. chloris (Sparrm.) and A. citrina (Gmel.) are 

 perfectly distinct species, and should be distinguished as 

 follows : — 



