ae -_ J - oar 4 eee 
5. PLECTRURUS, 161 
Eye in the ocular shield. No mental groove. A supraocular; no 
temporal. Tail compressed, the terminal scute compressed and with 
two superposed, simple, bifid or trifid points. 
Southern India, 
Synopsis of the Species. 
I. Eye not quite half the length of the ocular shield; terminal 
caudal seute with two superposed simple points. 
Woemtrals 160-168. 5.0... cccccccccsssecs 1. perroteti, p. 161. 
ROM IEE ans oo velcic ceca cues bimuann 2. davisonii, p. 162. 
II. Eye half the length of the ocular; terminal caudal scute with 
two superposed bi- or tricuspid transverse ridges. 
Ventrals not twice as broad as contiguous 
BONNE Satan dwase oe.c0s «ck ama naees 3. guentheri, p. 162. 
Ventrals twice as broad as contiguous scales. 4. aureus, p. 162. 
1. Plectrurus perroteti. 
Plectrurus perroteti, Dum. § Bibr. vii. p. 167, pl. lix. fig. 4 (1854) ; 
Gray, Proc. Zool, Soc. 1858, p. 265; Giinth. Rept. Brit. Ind. p. 193 
(1864), and Proc. Zool. Soc. 1875, p- 230; Jan, Icon. Gén. 1. 9, 
L. ii. fig. 7 (1865); Theob. Cat, Rept. Brit. Ind. p. 136 (1876); 
eddome, Ann. & Mag. N. H. (5) xvii. 1886, p. 25; Bouleng. 
Faun. Ind., Rept. p. 271 (1890). 
Snout obtuse ; rostral small, the portion visible from above shorter 
than its distance from the frontal ; nasals in contact; frontal longer 
than broad, Eye hardly half the length of the ocular, Diameter 
of body 30 to 38 times in the total length. 15 scales round the 
middle of the body, 17 behind the head. Ventrals not quite twice 
as large as the contiguous scales, 152-168. Subcaudals 7-12. 
Caudal scales more or less distinctly pluricarinate; terminal seute 
with two superposed single points. Brown or purplish, uniform, or 
each scale edged with darker; young pale brown, with darker 
longitudinal lines. 
Total length 330 millim. 
Nilgherries and Anamallays, 4000-8000 feet. 
a-b, ¢ (V.156; C. 12) Nilgherries, T. C. Je ef Pe}. 
& 2 (V. 164; ©. 7). sola: 
e. 2 (V. 158; C. 8). Nilgherries, ee grt Socie 
d-e. Yg. (V. 161, 168; Kotagiri, Nil- Henderson 
C. 8, 8). gherries, [P.}. 
I-k. 3 (V. 156, 156,152, Anamallays, 4700 W. Davison, Esq. [P.]. 
158; ©.10,11,11,10) feet. 
& 9 (V. 161; 0. 7). 
L 4 an (V. 154, 159; Anamallays. Col. Beddome [C.}. 
ng. ¥e Vy .(V.164, a 157, Wynad. Col. Beddome [C.}. 
; C.8, 8, 9, 10). 
r, 8. 9 (V. 157; C. 8) & Malabar. Col. Beddome [C.}. 
yg. (V. 165; ©. 11). 
VOL, I. M 
