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triangular black spots on the sides have a small light mark at their 

 bases which are directed upward. The points are usually divided and 

 extend as two (or one) black streaks at the posterior margin of the 

 ventral shields half way across the belly, and some of the posterior ones 

 meet to form crossbands. These two specimens are intermediate forms 

 to the var. annularis which perhaps may represent a juvenile stage. 



Tropidonotus vittatus Lin. 2 specimens. 



Tropidonotus suhminiatus Schleg. 4 specimens (B of them young). 



Pseudoxetiodon intermedius n. sp. With this name I think I must, 

 at least pro tempore, distinguish a form which is represented in this 

 collection by one specimen and which can be described as follows : 



A Pseudoxenodon with the following lepidosis: Rostral about twice 

 as broad as deep; internasals a little shorter than the praefrontals ; 

 frontal once and one third as long as broad, about as long as its dis- 

 tance from the end of the snout, considerably shorter than the 

 parietals, the length of which nearly equals the length of the frontal 

 and the praefrontals taken together; loreal longer than deep; one 

 prae- and three postoculars; temporals 2 + 3 (but on the left side one 

 of the posterior temporals reaches the postoculars so it seems as if it 

 was 3 + 2 temporals) ; eight upper labials, third, fourth and fifth 

 entering the eye; five lower labials in contact with the anterior chin- 

 shields, which are shorter than the posterior ones. Scales in 19 rows, 

 all keeled except the most inferior lateral row and the scales on the 

 neck. Ventrals 146, anal divided. The number of subcaudals cannot 

 be stated as the tail has been mutilated. The main colour is dark 

 olive-brown above, inconspicuously dotted with black. Head and neck 

 have a greenish tint. Behind the neck there is a region about 3 cm in 

 length in which the scales are margined by minium red colour and 

 their bases have partly the same colour. In the next portion of the 

 body, about 15 cm in length, some of the scales are margined in the 

 same way by yellowish colour. But the posterior part of the body and 

 the tail are uniformly coloured. The upper labials are lighter than 

 the upper part of the head, the four posterior ones even being partly 

 yellowish. The three anterior seams between the upper labials are 

 black and a black streak extends from the eye and between the fifth 

 and sixth labials; a black spot is situated on the upper part of the 

 suture between the sixth and seventh labials. The lower parts are 

 uniformly yellowish white, but the olivaceous colour of the back ex- 

 tends on the lateral parts of the ventral shields and there is in the 

 anterior part of the body a black spot laterally on each gastrosteg on 

 the border between the dark colour of the flanks and the light colour 

 of the belly (but there is no light streak in this region as in Pseudo- 



