180 Zoological Society :— 
under stones. My largest specimen is 14 inches long; it rarely, 
however, attains that size. 
9. PLectrurRvus GUENTHERI. 
Scales of the neck in 17 rows; anterior portion of the trunk in 13 
rows, of the rest of the body in 15 rows; head-shields as in P. Per- 
rotteti, only the rostral is not produced so far back. All the scales of 
the tail 5—6-keeled, and some of the approximated scales of the body 
also keeled; terminal scale of the tail with four sharp points, and 
covered with small tubercles; abdominals 172, and a bifid anal ; 
subcaudals 12. Total length 13 inches, circumference 13 inch. Co- 
lour of the body a bright reddish purple; belly yellow, the yellow 
colour rising up on the sides of the trunk into regular pyramid- 
shaped markings, and the purple colour descending in the same way 
down to the abdominals. 
I procured this very fine species in the moist forests at Walaghat, 
on the western slopes of the Nilgherries (3500 feet elevation). I 
have great pleasure in naming it after Dr. Giinther. 
** Hye small, no supraorbital shield. 
10. PLECTRURUS WYNANDENSIS. 
Scales round the body 15, round the neck 16 or 17; rostral 
scarcely produced back between the nasals ; xo supraorbital ; muzzle 
more obtuse than in P. Perrotteti; eye small; subcaudals 11 pairs ; 
anal large, bifid ; tail compressed ; scales smooth, terminal spinose, 
tail ending in a single horny point. Colour bluish black, with 
broad white blotches on the belly, which become larger and more 
numerous towards the tail; tail uniform bluish black. 
Wynand, elevation 3500 feet. 
11. PLEcTRURUS PULNEYENSIS. 
Rostral rather obtuse, produced back between the nasals, and 
touching the frontals, nasals not meeting ; eye small, in front of the 
ocular shield ; no supraorbitals ; vertical 6-sided ; occipitals rounded 
behind ; 4 upper labials. Scales round the neck 19, round the 
body 17; subcaudals, male, about 12, female 6-8. Tail compressed, 
ending in a small spinose keel, more or less bicuspid. Scales of the 
tail all smooth. Colour uniform earthy brown ; a lateral bright yel- 
low streak from the labials continued on each side of the trunk, about 
1 inch or 14 inch in length; a few minute yellow specks on the 
back ; belly with broad bright yellow transverse bands, very irregular 
as to number and shape; yellow markings about the vent and tail. 
Very abundant on the Pulney Hills, 7000 to 8000 feet, where it 
takes the place of P. Perrotteti of the Nilgherries; in habits, &e. 
exactly the same as P. Perrotteti. 
The very brilliant yellow fades in spirits. 
These last two species differ from the typical form of this genus 
in their much smaller size and in the absence of a supraorbital 
shield. As, however, they have the same compressed tail, I prefer 
keeping them in this genus to making a riew genus for them. 
