8 L. G. ANDERSSON, SOME NEW SPECIES OF SNAKES, 



Measureinents and nuinbers of tlie sliields of the specimeiis. 



Cataloffue nuniber. 



Total length 



Length of the tail 



» of the head to the hind margin of the 

 parietals 



Greatest breadth of the head 



Longitudinal diameter of the eye 



Distance from the eye to the snout 



Number of the ventrals 



» 3> subcaudals 



Pseudoboodon brevicaudatus. Spec. nov. 



This species, which also is represented by three speci- 

 mens, agrees completely with the prececling except in foUo- 

 wing points: The rows of scales are 19; the ventrals 149 — 

 152, and the subcaudals 16 — 21 pairs. The lower labials are 

 eight in nuniber in all specimens, four of these bordering 

 the anterior chinshields, which always are longer than the 

 posterior. The tail is shorter and of an other shape, tape- 

 ring gradually from the base to the end. (In Ps. albojmnc- 

 tatus the tail is nearly of the same thickness, rapidly con- 

 tracted at the point.) 



The species seems to vary in colour by age. The ground 

 colour in all three specimens is brownish black as in the 

 preceding species, but in the little young specimen the head 

 is påle brown with the same black edged white ocelli on 

 the labials as in the preceding species. On the sides of the back 

 of this specimen there are two rows alternating transverse light 

 spöts, and on the ventral shields as also on the scales we find 

 the same white spöts as in the preceding species. With increa- 

 sing age the head becomes darker and the light spöts dissa- 

 pear with exception of the white ocelli on the labials. On 

 the halfgrown specimen the head is still much lighter brown 

 than the body and a few light spöts are left on the ventrals, 

 but on the great specimen the colour above, on the head as 



