192 Records of the Indian Museum. (VoL. XI, 
this question is settled. I have here to describe a new race from 
Coorg on the east side of the Western Ghats considerably east and 
a little south of the Madras district. 
The following key to the known races may be useful :— 
Key to the races of G. trijuga. 
I. Head with conspicuous red or yellow markings. 
A. Temporal regions pale yellow, snout 
black; shell uniform black or very 
dark brown .. . coronata. 
B. Whole of the head black with orange- 
red streaks and spots; shell dark 
brown plastron as a rule bordered with 
yellow a . thermalis. 
II. Head without conspicuous ra or aller 
markings. 
A. Head plumbeous grey, obscurely vermi- 
culated on the temporal regions ; shell 
brown, the plastron with yellow bor- 
ders . plumbea. 
B. Head olivaceous with i inconspicuous y el- 
lowish or greenish spots and streaks; 
shell brown or blackish, the plastron 
as a rule with yellow borders. 
forma typica (madraspatana). 
C. Head uniform brown or with an obscure 
reticulation of olive-brown and orange- 
yellow; shell of adult black, the plas- 
tral borders and the dorsal keels yel- 
low - a .. edentana. 
Subsp. plumbea, nov. 
The carapace is dark brown and when wet appears to be ob- 
scurely murbled with a still darker shade; there are as a rule 
yellow markings on each or some of the costal shields and the 
dorsal ridges are for the most part tinged wit yellov. Tae cen- 
tral part of the plastron is dark brown with broad yellow margins ; 
the bridge is da k brown with yellow spots along the ouver edge. 
In life the dorsal surface of the limbs, head and tail is leaden grey; 
that of the snout and of a triangle extending backwards from the 
eyes has a brownish tinge and is devoid of markings. The tem- 
poral region is obscurely vermiculated with a paler shade of grey 
and two pale lines extend backwards from the eye above the 
tympanum, which is somewhat darkened; the beak and the ven- 
tral suriace of the head, neck and limbs are pale grey; on the 
chin and neck there are obscure dark horizontal lines. 
After some weeks in spirit the markings on the head have 
become obscure and the whole has a livid greyish tinge very 
