120 
HORN EXPEDITION—EEPTILIA. 
Locality ,—Charlotte Waters. 
The genus has hitherto only been recorded from Arabia and Persia. 
In a second complete specimen received by Professor Spencer from Mr. P. M. 
Byrne since the above was published, and which we figure, there are no pores ; 
the whitish-grey colour is replaced by reddish-brown ; the band on each side is 
continuous, of a bright red spotted and edged above with black ; the whitish 
median band is broader and is continued over the occiput with a red, black-dotted, 
V-shaped mark on the nape, indicated in the fii’st specimen by a blotch; the 
white spots on the sides are larger. The tail is slender, slightly depressed, 
tapering gradually. The dark lateral and light median bands are continued to 
the tip of the tail. Under surfaces uniform whitish. 
Dimensions of Second Specimen. 
Total length 
88 
mm. 
Head from snout to ear-opening 
11 
5) 
Width of head 
9 
J ) 
Body 
... 37 
Fore-limb 
15 
1) 
Ilind-limb ... ... ... 
21 
Tail 
40 
Heteponota, Gray. 
(5) Hetercjiota bynoei, Gray. (Plate XI., Figs. 1, 2). 
The expedition obtained an excellent series of specimens of Heteroiwta. After 
a careful examination of this series, and of the large series in the Macleay Museum, 
we conclude with Dr. Giinther that Heteronota {Eublepharis) derbinna, Gray, 
cannot be separated as a distinct species from H. bynoei,^ Gray. The specimens 
which we have had before us exhibit a great range of variation in all the characters 
which have been regarded as distinguishing features. These variations occur 
amongst the individuals from the Central Australian region, and as markedly 
amongst those in the Macleay Museum collected at King’s Sound, on the north¬ 
west coast. As in the case of Nephrarus IcBins and JV. platytirus,, the characters 
relied upon to distinguish the species are not constant but vary considerably, and 
the variations of the different characters are apparently quite independent of each 
other. 
