PLBCTEURUS. 271 



321. Plectrurus perroteti. 



Plectrurus perroteti, Dum. 8f Bibr. Erp. Gen. vii, p. 107, pi. lix, %. 4 ; 

 Gray, P. Z. S. 1858, p. 265 ; Giinth. Rept. B. I. p. 193 ; Jan, Icon. 

 Ophid. 9, pi. ii, fig. 7 ; Theob. Cat. p. 136 ; Beddome, A. M. N. H. 

 (5) xvii, 1886, p. 25. 



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 shield. 

 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, 152-165 ; subcaudals 

 7-12. Caudal scales more or less distinctly pluricarinate ; terminal 

 scute with two superposed single points. Brown or purplish, 

 uniform, or each scale with darker edges. 



Total length 13 inches. 



Hab. Nilgiri and Anaiinalai Hills, 4000-8UOO feet. 



322. Plectrurus davisonii. 



Plectrurus davidsonii, Beddome, A. M. N. H. (5) xvii, 1880, p. 25. 



This may eventually have to be united with P. perroteti, from 

 which it differs in the somewhat more elongate body (39 times the 

 diameter), the higher number of ventrals (180) and the brighter 

 coloration ; yellow, each scale edged with purple. 



Total length 17 inches. 



A single female specimen was obtained in the Anaiinalais, at an 

 altitude of 4700 feet, by Mr. W. Davisou. 



323. Plectrurus guentheri. 



Plectrurus guentheri, Beddome, P. Z. S. 1863, p. 228, pi. xxvii ; 

 Giinth. Rept. B. I. p. 193 ; Thcob. Cat. p. 136 5 Beddome, A. M. N. H. 

 (5) xvii, 1886, p. 26. 



Snout obtuse; rostral small, the portion visible from above 

 shorter than its distance from the frontal ; nasals in contact ; 

 frontal longer than broad. Eye half the length of the ocular. 

 Diameter of body 36 to 42 times in the total length. 15 scales 

 round the middle of the body, 17 behind the head. Ventrals 

 not twice as large as the contiguous scales, 171-175 ; subcaudals 

 10-12 ( d ) Caudal scales pluricarinate ; terminal scute with two 

 superposed bi- or tricuspid transverse ridges. Bright reddish 

 purple above, this colour descending as triangular markings on the 

 sides, which, like the belly, are yellow; the triangular markings 

 sometimes extending across the belly. 



Total length 14 inches. 



Hab. Walaghat, below Sispara, western side of the N ilgiri Hills, 

 3500-4000 feet. 



