( xxiv ) 



Grotea. 

 Scales smooth in 17 rows. One prsefrontal and one postfrontal. 

 Plumbeous above, white below ... G. bicolor. 



Falconeria. 

 Scales faintly keeled in 17 rows. One prsefrontal, two post- 



frontals. 

 Five upper labials ... F. Bengalensis. 



Oligodon. 

 Scales smooth in 15 to 17 rows. Two postfrontals. 



Scales in 15 rows. 



7 upper labials. Belly white. Irregular 



black cross streaks on back ... 0. sub-griseus. 



7 upper labials. Belly white. Back with 



17 8-shaped brown spots ... O. spilonotus. 



7 upper labials. Belly white. Back with 



37 large rhombic black spots ... 0. Elliotti. 



8 or 9 upper labials. Belly white: (scales? 



rows). Scuta black dotted . . . 0. sub-punctatus. 



7 upper labials. Belly irregularly brown 



spotted ... O. fasciatus. 



7 upper labials. Belly with three series of 



brown dots ... O. sub-lineatus. 



7 upper labials. Belly with quadrangular 



black spots ... 0. Templetonii. 



6 upper labials. Belly with quadrangular 



black spots. Loreal none . . . O. modestus. 



7 upper labials. Belly with quadrangular 



black spots. A yellow vertebral line ... 0. dorsalis. 



7 upper labials. Belly with quadrangular 



black spots. One pair of frontals . . . O. brevicauda. 



Scales in 17 rows. 



8 or 9 upper labials. Belly white ... 0. spinipunctatus. 

 7 upper labials. Belly with quadrangular 



black spots ... 0. affinis. 



