362 COLVBUIDJE. 



its distance from the end of the snout, shorter than the parietals ; 

 one prseoeular, extending to the upper surface of the head ; two 

 postoculars ; temporals 2 + 3 or 3 + 3; upper labials 8, third, 

 fourth, and fifth entering the eye ; 5 lower labials in contact with 

 the anterior chin-shields, which are about as long as the posterior. 

 Body strongly compressed ; scales in 21 rows, disposed obliquely ; 

 scales of the vertebral row considerably enlarged but longer than 

 broad, except on the posterior part of the body. Venti-als 249-252 ; 

 anal entire; subcaiidals 124-133. Uniform green above, the skin 

 between the scales black ; uniform greenish yellow below. 



Total length 4| feet ; tail 13 inches. 



Ilab. Assam, Cachar, and 8ikhim. 



451. Dipsas forstenii. 



Triglyphodon forsteni, Dimi. Sf Bihr. Erp. Gen. vii, p. 1077. 

 Dipsas forsteui, Gi'oith. Rei)t, B. I. p. 300 ; Anders. P. Z. S. 



1871, p. 187 ; Stoliczha, J. A. S. B. xl, pt. 2, 1871, p. 439 ; Theob. 



Cat. p. 198. 



Anterior palatine and mandibular teeth considerably larger than 

 the others. Eye about as long as its distance from the nostril ; 

 rostral broader than deep ; internasals much shorter than the prae- 

 frontals ; frontal nearly as long as its distance from tlie end of 

 the snout, shorter than the parietals ; loreal square or deeper than 

 long ; one prseoeular, extending to the upper surface of the head ; 

 two or three postoculars ; temporals Aery small and numerous ; 

 8 to 11 upper labials, third, fourth, and fifth, or fourth, fifth, and 

 sixth, entering the eye ; 3 or 4 lower labials in contact with the 

 anterior chin-shields, which are about as long as the posterior. 

 Body compressed ; scales in 25 or 27 rows, disposed obliquely, 

 vertebral row feebly enlarged. A'entrals 259-270 ; anal entire ; 

 subcaudals 106-131. Brown above, with more or less regular 

 angular black cross bars, with or A\ithout white spots between 

 them ; a black band from the frontal shield to the nape and 

 another on each side behind the eye ; lower parts white, uniform 

 or spotted with brown. 



Total length 4 feet 10 inches ; tail 1 foot. 



JIab. Bengal, base of Himalayas in Sikhim, Bundelkhand, Bom- 

 bay Ghats, Anaimalai Hills, Ceylon. 



Genus ELACHISTODON, 



Reinhardt, Overs. Dansk. Vid. SeLsk. Fork. 18C3, p. 20Q. 



Teeth few and extremely minute, with a pair of posterior 

 maxillary grooved fangs. A series of esophageal teeth. Head 

 scarcely distinct from neck; eye rather small, with vertically 

 elliptic pupil ; head-shields normal ; posterior nasal deeply con- 

 cave. Body elongate, somewhat compressed. (Scales smooth, in 

 15 rows, vertebral row eidarged. Subcaudals in two rows. 



