( xxiv ) 



Grotea. 

 Scales smooth in 17 rows. One prefrontal 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. BeUy white. Back with 



17 8-shaped brown spots ... 0. spilonotus. 



7 upper labials. Belly white. Back with 



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



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



rows). Sf uta black dotted ... 0. sub-punctatus, 



7 upper labials. Belly irregularly brown 



spotted ... 0. fasciatus. 



7 upper labials. Belly with three series of 



brown dots ... 0. sub-lineatus. 



7 upper labials. Belly with quadrangular 



black spots ... 0. Templetonii. 



6 upper labials. Belly with quadrangular 



black spots. Loreal none ... 0. 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. BeUy white ... 0. spinipunctatua. 

 7 upper labials. Belly with quadrangular 



black spots . . . O. affinis. 



