26o Campbell, Additions to '• H. L. White Collection." [jst^Xprii 



Previously {Emu, ante, p. 6) I mentioned that tliis extreme 

 western race may be either Mathews's mungi or occidentalis. It 

 is now stated to be the latter (see Ihis, 1917, p. 592). Specimens 

 from Dirk Hartog and from the mainland do not differ ; this was 

 also observed by Carter, and is somewhat remarkable, seeing that 

 Bernier birds (from next island but one to Dirk Hartog) are 

 appreciably different, the male having a very distinct diva blue 

 (darker on the cheeks), correctly shown in Grant's figure {Ihis, 

 1909, pi. ix., p. 676) ; while both male and female have darker 

 blue tails than either Hartog or mainland birds. 



Another fact : whereas occidentalis and leiicoptenis are found 

 together on Hartog, hernieri is the sole Maluriis on the island of 

 that name. 



Regarding Eastern and Western races of assimilis, Mathews says 

 {Nov. Zool., xviii., p. 360) that occidentalis combines the head 

 coloration of lamherti with the back coloration of assimilis, to which 

 may be added " lighter chestnut (Hay's russet) shoulders " of 

 western birds. Another cross-check — typical assimilis has the 

 forehead diva blue, similar to the Bernier bird, but has the 

 shoulders darker chestnut (morocco red). See Emit, ii., pi. 10. 



Malurus leucopterus, Quoy and Gaimard. Black-and-White Wren- 

 Warbler. 

 Nesomaliiriis I. leitcopterus. 



Ten ,^(^, 2 $$, I not sexcd. Dirk Hartog Island ; and 6 S 

 (2 immature), Barrow Island. Adding to my former remarks 

 {Emu, xvii., pp. 177, 178), and after examining an excellent series 

 (total 27) of skins of the Black-and-White Wrens from both 

 Barrow and Dirk Hartog Islands (W.A.), there appears evidence 

 to admit of two " climatic or geographical races " for the following 

 two principal reasons : — 



Firstly, on a visual examination, the Barrow Island bird, 

 edouardi, seems a trifle more robust than the type locality (Dirk 

 Hartog) bird, leucopterus ; while the Barrow male appears to 

 possess more white on its wings. The male leucopterus has the 

 darker blue tail (deep, dull violaceous blue), corresponding with 

 the colour of that of the Blue-and-White Wren (M. cyanotus) of 

 the mainland. The tail of edouardi is a more greyish-violaceous 

 blue. On the other hand, the female of edouardi almost resembles 

 the colour (fawn) of the female Blue-and-White mainland bird, 

 while the female of leucopterus is lighter (drab). 



It may be also mentioned that the feathers of the lower part of 

 the tibia of the male leucopterus are dusky grey, as in cyanotus, 

 wliile the whole tibia of edouardi is black. 



Secondly, Mr. Whitlock's field testimony : — " After studying 

 the male series of M. edouardi and M. leucopterus, I am prepared 

 to admit that individuals of the latter have a tendency to exhibit 

 blue feathers (not indigo blue, as in other species) on the breast. 

 When these are present the tail is a much brighter blue than the 

 ordinary black-breasted specimens. In edouardi I never detected 



