68 



O. FASCiATUS, Gthr. 



Scales 15. Ventrals 180, subc. 40. Labials 7 (3 and 4). 

 Brown; about 27 broad black-edged cross-bands; a 

 narrow vertebral stripe ; belly white with small brown 

 spots ; head-markings indistinct. 

 South of India. 



0. SUBLINEATUS, D. and B. 



Scales 15. Ventrals 150, subc. 82. Labials 7 (3 and 4). 

 Brown, with dorsal series of brown white-edged spots ; 

 belly with 3 punctulated brown streaks. 

 Common in Ceylon. 



O. AFFiNis, Gthr. 



Scales 17. Ventrals 134, subc. 25. Loreal none. Labials 

 7 (3 and 4). Brownish grey, with short thin black cross- 

 bars, belly white with square black (ventral) spots ; head- 

 markings with longitudinal streak. 

 Aiiamullies. 



O. TEMPLETONII, GtllT. 



Scales 15. Ventrals 135, subc. 31. Labials 7 (3 and 4) 

 5th and 7th contiguous below. Brown, with light vertebral 

 band, and about 18 dark cross-bands, belly white, square 

 spots. 



Ceylon. 



0. MODESTUS, Gthr. 



Scales 15. Ventrals 158, subc. 41. Anal single. Labials 

 6 (3). Loreal none, one postocular. Brown, with posterior 



ft 



light vertebral stripe ; light collar, belly white with square 

 black spots ; head -marking obscure. 



Ceylon (?) Solitary museum specimen. 



0. DORSALis, Gray. 



Scales 15. Ventrals 168-173, subc. 40-60. Labials 7 

 (3 and 4). Brown, punctulated with black ; yellow vertebral 

 stripe bordered with black spots ; black dorsal line ; belly 

 white, with square black spots which often coalesce. 



