KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 55. N:0 3. 



11 



11. 



Tropidonotus Eisenhoferi 1 sp. n. (fig. 1 & 2) 



Fig. 1. 



Tropidonotus 



Eisenho/cri 



sp. n. 



One specimen. Doi Par Sakeng south of Muang Fång, North western Siarn, l?, ji 1914. 



Eye rather large. Rostral about twice and a half as long as deep, just visible 

 from above. Internasals broadly truncate in front, a little shorter tban the prse- 

 frontals ; frontal once and a third as long as broad, exactly as long as the 

 comissure between the internasals and pra?f rontals measured in a 

 line, shorter than the parietals ; loreal longer than deep ; 1 prae- 

 and 4 postoculars; temporals 2 + 2; 8 upper labials on one side and 9 

 on the other, third, fourth and fifth entering the eye on one side and 

 fourth, fifth and sixth on the other; 5 lower labials in contact with the 

 anterior chin-shields, which are shorter than the posterior. Scales strongly 

 keeled, of outer row smooth, in 19 rows. Ventrals 160; subcaudals 73 in 

 two rows. 



Colour: Brownish-gray above, light green tovvards the head with 

 narrow transverse black streaks, a black streak below the eye, another 

 behind the eye and a third on each side of the neck ; lower parts yellow- 

 ish white strongly tinted with brownish black on the posterior vent- 

 rals, subcaudals almost black with small yellowish white margins. 



Total length = 950 mm. 



Tail = 228 mm. 



In colour this new species resembles Tr. nigrocinctus 

 Blyth, but in several ways it differs from that species as 

 seen by the description above. 



It belongs to the Tr. subminiatus-Gr oup. 



Fig. 2. Tropidonotus 

 Eisenhoferi sp. n. 



12. Tropidonotus chrysargus Schleg. 



One specimen, Baug T apan, Siamese Malaya (M. Smith coll.). 



The specimen from Bång Tapan has the frontal much longer than its distance 

 from the end of the snout, 1 pra> and 4 postoculars, 4 th , 5 th & 6 th labials entering 

 the eye; 6 lower labials are in contact with the anterior chin-shields on one side and 

 5 on the other. Total length — 295 mm. Length of tail = 71 mm. Ventrals 160, 



subcaudals — . 

 79 



The colour is dark brown above with short transverse bars along each side of 

 the back. The white colour of the upper labials is continued from the angle of the 

 mouth forming an angular band on the nape. Belly yellowish without döts, but with 

 a distinct series of small black spöts along each side. On the parietals there are 

 two small white spöts and the supraoculars are almost white. 



1 Named in lionour of Divisional Engineer Mr Emil Eisenhofek, Koon Tan, Siarn, who has greatly 

 contributed to the knowledge of the Vertebrate Fauna of Siain. 



