( 136 ) 



P. Perrotetii, D. et B. VII, p. 167, pi. 59, f. 4. 



Rostral as long as a nasal. Vertical elongate, much longer 

 than broad. Scales in the middle of the body is 15 rows. Ven- 

 trals 161'162, nearly twice as broad as the adjoining scales. Sub- 

 caudals 8 pairs. Colour uniform brownish. 



Grows to 14! inches. 



Inhabits the Nilghiri and Anamallay hills at 7,000 to 8,000. 

 feet. 



P. Guntheri, Beddome. P. Z. S., 1863, p. 228, pi. 27. 



Head flat above, with obtuse snout. Rostral considerably 

 shorter than a nasal, with a right angle behind. Vertical elon- 

 gate, nearly twice as long as broad. Body in the middle with 

 15 rows of scales, on the neck 17. Ventrals 172*175 nearly 

 twice as broad as the adjoining scales. Sub-caudals 12 pairs. 

 Colour above purple, scales paler margined. Below yellow, 

 rising on the sides in triangular markings, alternately with 

 similar expansion of the colour of the back. Some narrow purple 

 stripes crossing the belly. 



Grows to 14 inches. 



Inhabits ihe Nilghiri hiUs at Walaghat, 3,500 feet. 



R. scabricauda, Theob. 



Scales in 15 rows. Eye between four shields, frontal, superci- 

 liary, postocular, and third labial. Nasals large. Caudals 8 pairs. 

 All the scales surrounding the tail, and a few of the last ventrals 

 are roughened with 1, 2, 3 short tubercular keels. Tip of tail 

 flattened vertically, pustulose, simple, not cuspid. Chin, tail, and 

 body iridescent blackish brown. The ventrals and the adjoining 

 row of scales yellow. 



Length 6-53 inches (tail 0-40). 



Inhabits the Anamallays. 



P. sanguineus. Bed. Mad. Month. J., Med. Scien., 1867, p. 14. 

 " Tail compressed, with the scales very obscurely keeled, termi- 

 nal scale ending in a single sharp point. Head elongated. Ros-- 

 tral very small, nasals joined behind the rostral. Erontals very 

 large, vertical sis sided, diamond shaped. A supra-orbital and a 



