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details of pattern irregular and variegated. Head yellow, with 

 a median black streak and two black dots on the occiput. 



Tail varies from an eighth to a tenth of the entire length. 



Grows to about 30 feet, but specimens over 20 feet are seldom 

 seen. 



Inhabits the Malayan Peninsula, the Nikobars, Barmah and 

 Tenasserim. 



P. molurus, L. 



Scales in 65 rows round the middle of the body. Several 

 small shields between the postfrontals and the vertical. 11 upper 

 labials, the sixth below the orbit, but separated from it by one or 

 two infraoculars. The two anterior upper labials are pitted, and 

 four of the lower ones. Colour light greyish brown. A brown 

 lanceolate or subcordate spot on the crown and nape, its point 

 resting on the frontals, its end on or behind the vertical. A light 

 median streak divides its broader portion. A dark brown streak 

 from the nostril to gape, becoming broader behind and confluent 

 with another running along the mandible. A subtriangular 

 brown spot below the eye. A vertebral series of large quad- 

 rangular spots, with margins sometimes straight, sometimes 

 serrated, and an oblong spot on each side of the quadrangular 

 ones. Along the sides another row of irregular brown spots, 

 sometimes with a light centre. 



Grows to about the same size as the last. 



Inhabits the whole of Peninsular India, Ceylon (?), Province 

 Wellesley, the Malayan Peninsula (where less common than 

 reticwlatus) and Southern China. 



Family ERTCiDiE. 



Body cylindrical, covered by small short scales. Tail very 

 short, with a row of undivided subcaudals. Eye small, with 

 vertical pupil. None of the labials pitted. A short conical 

 prominence in a groove on either side of vent, indicating the 

 extremity of a rudimentary limb below the skin. 



