2: J ,5 



DESCRIPTIONS OF TWO NEW SNAKES FROM 



UPPER BURMA. 



(With a Plate.) 



By G. A. Boulenger, f.r.s., v.p.z.s. 



(Read before the Bombay Natural History Society on March 1905.) 

 A small series of Reptiles collected in the neighbourhood of Mogok, 

 Upper Burma, by my friend Mr. Herbert Hampton, and presented by 

 him to the British Museum, contains besides examples of little known 

 species, such as Acanthosaura kakhienensis, Anders. [Caloes fece, 

 Blgr.), Dinodon septentrionalis, Gthr., and Amblycephalus andersonii y 

 Blgr., two snakes which are evidently new to Science, and of which J 

 have much pleasure in sending descriptions to the Bombay Natural 

 History Society. 



OUGODON HERBERTI. (PI. fig. 1). 



Nasal undivided ; portion of rostral seen from above nearly or quite 

 as long as its distance from the frontal ; no internasals, the rostral 

 wedged in between the nasals and in contact with the prefrontals ; fron- 

 tal longer than its distance from the end of the snout, shorter than the 

 parietals ; no loreal, the prefrontal in contact with the second labial ; ono 

 pre and one postocular ; temporals 1+2 ; six upper labials, third and 

 fourth entering the eye ; three or four lower labials in contact with the 

 anterior chin-shields, which are longer than the posterior. Scales in 13 

 rows. Ventrals 189-190 ; anal divided ; subcaudals 37-40. Dark grey 

 above, with four, dark brown longitudinal bands, the median pair sepe- 

 rated by a yellowish brown vertebral stripe, which, anteriorly, may be 

 broken up into elongate, hexagonal, black-edged spots ; an oblique 

 yellowish streak on each side of the nape, coverging towards its fellow 

 on the occiput ; head dark brown, with two yellow spots on the sides, 

 one in front of the eye, the other behind ; orange-red below, almost 

 every other ventral shield with a black square spot at the outer end. 



Total length 560 millimetres ; tail 80. 



Two specimens, male (v. 190 ; c. 40), and female (v. 189 ; c. 37). 



This very well characterized, species differs from all those with which 

 I am acquainted in having only 13 rows of scales, a character asciibed 

 to the insufficiently described O, dorsale, Berthokl, in which the anal 

 is single. O. brevicauda, Gthr., is the only other species known to 

 lack the internasal shields. 



