HORN EXPEDITION-REPTILIA. 
127 
they all agree witli the typical A. imbricatus, except in the number of pores and in 
the colouring. 
The ground colour of head and body varies from brownish-grey, through 
yellowish-brown, to rusty-brown or brick-red. The intermediate ones agree best 
with the type. The specific identity of all these forms will appear from the 
following table of particulars in the case of six individuals, A—F, chosen for the 
purpose :— 
A 
B 
C 
D 
E 
V 
Ground Colour 
- 
Browiiish- 
g:rey. 
Bi'ownish- 
grey. 
Yellowish- 
biown. 
Yellowish- 
brown. 
Briok-red. 
Brick-red. 
nun. 
mni. 
nim. 
mni. 
nim. 
nini. 
Total Length - 
- 
165 
— 
216 
210 
190 
171 
Head . - . 
- 
15 
18 
17 
17 
15 
15 
Width of Head 
- 
13-5 
15 
14 
14 
13 
12'5 
Body - - - 
- 
43 
48 
51 
52 
40 
41 
Fore-limb 
- 
27 
30 
32 
33 
27 
25 
Hind-limb 
- 
55 
60 
Go 
62 
56 
50 
Tail 
- 
107 
— 
148 
141 
135 
115 
Number of Pores 
- 
38 
30 
AO 
30 
34 
30 
The pores form a series interrupted on the prreanal region. It will be seen 
that in all our specimens the number of pores is greater than in the type (22). 
We shall meet, however, with a similar but even greater variation in the number 
of pores in A. retiadatus. The same thing occurs in A. pictus. The number is 
clearly not a hard-and-fast one in these species. 
The longitudinal series of black spots and the white transverse bands are 
most conspicuous in C and D. In E and F, where the ground colour becomes 
brick-red, the black spots greatly diminish in size and the white bands dis¬ 
appear. In A, B, C, D there are four narrow lilack bands directed obliquely 
backward over the supra-orbital region on each side ; these are wanting in 
E and F. 
Localities .—Alice Springs, Finke Gorge, Charlotte Waters. 
Distribution .—Southern Australia (B.M.C.). 
