93. OLIGODON. 245 



16. Oligodon vertebralis. (Plate XI. fig. 2.) 

 Simotes vertebralis, Giinth. Ann. ^ Mag. N. H. (3) xv. 1865, p. 91. 



Nasal divided ; portion of rostral seen from above considerably 

 shorter than its distance from the frontal; suture between the 

 internasals longer than that between the prsefrontals ; frontal longer 

 than its distance from the end of the snout, a little shorter than 

 the parietals ; a small square loreal ; one prse- and two postoculars ; 

 temporals 1 + 2; seven upper labials, third and fourth entering the 

 eye ; four lower labials in contact with the anterior chin-shields, 

 which are nearly twice as large as the posterior. Scales in 15 rows. 

 Ventrals 154 ; anal divided ; subcaudals 54. Brown above, with 

 small yellow, black-edged spots, the largest of which form a verte- 

 bral series ; head yellowish, with two chevron-shaped, brown, 

 black-edged bands, the anterior passing through the eyes, the 

 posterior with the apex on the frontal; lower parts yellowish, 

 throat spotted with brown. 



Total length 345 millim. ; tail 75. 



Borneo. 



a. -S (V. 154; C. 54). Bandjermassing. L. L. Dillwyn, Esq. [P.]. 



(Type) 



17. Oligodon waandersii. (Plate XI. fig. 3.) 



Rabdion waandersii, Bleek. Nat. Tijdschr. Nederl. Ind. xxii. 1860, 

 p. 83. 



cruciatuni, Bleeh. I. c. p. 82. 



Oligodon waandersii, Giinth. Ann. Sf Mag. N. H. (3) xv. 1865, p. 91. 



Nasal undivided ; portion of rostral seen from above shorter than 

 its distance from the frontal ; suture between -the internasals as 

 long as that between the proefrontals ; frontal longer than its 

 distance from the end of the snout, as long as the parietals ; no 

 loreal, nasal in contact with praeooular ; one prse- and two post- 

 oculars ; temporals l-t-2; six upper labials, third and fourth 

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

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

 Scales in 15 rows. Ventrals 145-151 ; anal divided ; subcaudals 

 22-28. Eeddish brown above, with a few widely separated yellow 

 brown-edged small spots, mostly disposed in pairs; a yellowish 

 coUar ; lower parts uniform yellowish. 



Total length 220 millim. ; tail 23. 



Boni Id., Celebes. 



a. c? (V. 151 ; 0. 28). Boni. Dr. Bleeker. (Type of 



Rabdion waandersii.) 



b. Yg. ("V. 145 ; 0. 22). Boni. Dr. Bleeker. (Type of 



Rabdion cruciatuni.) 



