242 
Trausactions of the Uoyal Society of South Africa. 
1. 2. 3. 4. 5. 6. 7. 8. 9. 
Albaky Mu.seum : 
Steiiikopf J . . . . 113 12G 25 72 26 25 4*5 3 4th slightly 
? .... 102 88 19 G2 22 23 4-5 3 4th 
The following disagreements with the above description are to be noted ; 
1. The enlai'ged dorsal scales sometimes arranged in clusters at either 
side of the vertebral line. — Aus, Pt. Nolloth, Steinkopf, Nelspoort. 
2. Enlarged scales scattered irregularly and few. — Pt. Nolloth. 
8. Smaller dorso-laterals strongly keeled but not mucronate. — Aus, 
Kuboos, Pt. Nolloth. 
4. A female from Aus has the smaller dorsals strongly keeled but not 
nuicronate ; ventrals strongly heeled and mucronate ; head-scales smooth 
over the eyes and on the forehead. 
5. A male from Namaqualand resembles this specimen, but the enlarged 
dorsals in this case are only slightly enlarged, and arranged in 8 longitudinal 
series on either side. 
6. A female from Namaqualand has the enlarged dorsal scales in clusters ; 
the third toe longest on the right foot, the fourth on the left. 
7. Four enlarged scales in the middle of the snout. — Pt. Nolloth, 
Ograbis, Nelspoort, Grassmund. 
8. Preanal pores apparently entirely absent. — Beaufort West, Steinkopf. 
9. Preanal pores in two rows. — Pt. Nollotli. 
10. The third toe longest on the right foot, the fourth on the left. — Aus, 
Pt. Nolloth. 
11. The third toe longest. — Pt. Nolloth (3 specimens), Driekoppen (1 
specimen). Otherwise agreeing with A. hrachytira. 
12. Toes long and slender. — Nelspoort. 
13. Specimens from the farm " Driekoppen," Hanover Division, show a 
decided passage from A. hracliyura to A. distanti It is most difficult to 
place some of the specimens, as they exhibit the characters of both species 
in almost every possible combination. 
One specimen has the ear-opening small as in typical A. brachyura, 
scaling rougher than in specimens of A. distanti from Pretoria, but the 
third toe longest ; another has all the above characters but the fourth toe 
loDgest ; while yet another has the ear-opening 3 mm. on one side, 2 mm. on 
the other, and the third aiid fourth toes equal. 
A male from Namaqualand, and a female, prol)ably from the neighbour- 
hood of Pt. Nolloth, are very like A. aculeata but that the ear-opening is 
small and the toes are exceptionally long and slender. There are usually 
3 or 4 enlarged, trihedral scales on the forehead with some smaller ones at 
either side, just behind and partly surrounding the occipital scale, which is 
usually slightly pitted. .' 
Material from Nelspoort and Beaufort West may have the enlarged 
