( 165 ) 



small, being really only a detached portion of the third labial, 

 Postoculars two, the upper the largest. 9 upper labials, the fifth 

 and sixth entering the orbit. Anal bifid. Colour above pale 

 olive grey, transversely dark barred and spotted. A horseshoe 

 mark with the ends directed backwards on the occipitals. A 

 pale elongate lateral ocellus on each occipital. Ventrals with a 

 marginal black dot anteriorly, markings become obsolete posteri- 

 orly. Belly whitish or with a slight dusky tinge. 



Inhabits the North- Western Himalayas, Simla and Subathu, 



C. melanurum, Schl. 



Scales keeled in 19 rows. Rostral broader than high, Prse- 

 frontals not quite half as large as the postfrontals. One prgeocular. 

 Two postoculars, sometimes confluent. 9 upper labials, the fourth, 

 fifth and sixth entering the orbit. Anal entire. Colour ante- 

 riorly brownish, passing posteriorly into black. A yellow verte- 

 bral band broadly edged with black on the anterior part of body 

 behind the neck. A short black vertical streak below the eye 

 Another from the orbit to the gape. A third runs obliquely from 

 the temporal region to the edge of the belly ending in about five 

 distant black blotches. Belly yellow before, black behind. 

 Markings more distinct and developed in young specimens. 



Grows to 65 inches. (Tail 14'5.) 



Inhabits the Malayan archipelago, the Andamans, &c. 



C. radiatum. 

 Scales keeled in 19 rows. Rostral broader than high. Prge- 

 frontals not quite half as large as the postfrontals. Loreal longer 

 than high. One prseocular extending nearly to the vertical. 

 Two postoculars. 9 upper labials, the fourth, fifth, and sixth 

 entering the orbit. Anal entire. Colour pale, but rich red 

 brown. Interstitial skin of the neck lavender. Of the anterior 

 part of the body black, with white reticulations, passing into 

 plumbeous and pale grey towards the tail. Three inches from 

 the head (in a 73 inch male), four black stripes commence 

 abruptly, two on each side, and taper ofi" to about the centre of 

 the body. The pale vertebral interspace covers four scales, the 



