( 140 ) 



Xenopeltis, Keinwardt. 



Upper labials eight. Prseocular large, replacing the absent 

 loreal. Occipital covered by five shields. Scales in fifteen rows. 



X. unicolor. Rein. 



Supraorbital small, not much larger than the eye. The anterior 

 pair and central occipitals resemble the vertical in form and size. 

 Nasal small oblong and transversed by a suture on which the nostril 

 is situated. Prseocular very large, forming a suture with the 

 posterior frontal and vertical. Postoculars two, equal. 8 upper 

 labials, the fourth and fifth being produced up to form the orbit 

 with the lower post-orbital. 7 lower labials. 



Colour above uniform steel blue, splendidly iridescent ; whitish 

 below. Young ones have a white head. 



Grows to nearly 50 inches, of which the tail ^V- 



Inhabits the Malayan Archipelago, Tenasserim, Pegu, Trichino- 

 poli (H. F. Blanford) the Andamans. 



Family Calamaeid^. 



Head not distinct from neck. Eye small with round pupil. 

 Some of the head shields always reduced. A mental fold. Maxil- 

 lary teeth equal. Palatine teeth present. 



; Calamaeia, Boie. 



Body cylindrical. One pair of frontals. Nasal simple, small. 

 LcJreal none, united with the frontal. One postocular. Four or five 

 labials. Scales smooth in 13 rows. Anal entire. Subcaudals 

 divided. 



C. Siamensis, Gllnther. 

 Upper labials four. The first pair of lower labials are in con- 

 tact with each other. Colour (olive) fleshy grey, with 11 very 

 narrow longitudinal black lines down the back, the vertebral and 

 alternate lines rather thicker than the rest. Head dark with a 

 yellow collar behind, followed by a second black edged yellow 

 collar, after a dark interspace less than the length of the head. 

 Occipitals yellow with a black spot. Tail minutely yellow 



