7 6 



BOLKAY 



5. The inner meta-tarsal 

 tubercle is very large, pro- 

 jecting, compressed on both 

 sides, hard and sharp; 

 always a good deal longer 

 than the distance between 

 the subarticular tubercle 

 of first toe and inner meta- 

 tarsal tubercle, frequently 

 equal to length of first 

 toe. 



6. The subarticular tu- 

 bercles on toes of hind 

 limbs small and only 

 slightly projecting. 



7. The vocal sacs are 

 blackish grey. 



8. The spaces between 

 the dusky marbling on the 

 back surface of thighs is 

 filled (according to Bou- 

 lenger) by a yellow color. 



9. The dark spots of 

 back, — on Chinese speci- 

 mens — expand horizontally. 



10. Fold on the back, be- 

 tween the two dorso-lateral 

 folds in 6-8 longitudinal 

 rows, varying in length. 



n. Skull invariably nar- 

 rower than long, very point- 

 ed at the end. 



12. Vomerine teeth never 

 meet the line joining pos- 

 terior border of choance. 



13. The nasals form a 

 sharp angle towards each 

 other and meet in a broad 

 ridge on middle line. 



14. Side borders of fron- 

 to-parietals parallel with 

 upper surface slightly 

 sunken in. 



15. Tectum synoticum tri- 

 angular. 



5. Inner meta-tarsal tu- 

 bercle small, of a flattened 

 cylindrical form not very 

 projecting, always shorter 

 than space between the 

 sub-articular tubercle of 

 first toe and inner meta- 

 tarsal tubercle. 



6. The subarticular tu- 

 bercles on toes of hind 

 limbs larger and more pro- 

 jecting. 



7. Vocal sacs blackish 

 grey. 



8. Spaces between dark 

 marbling on back surface 

 of thighs is never filled 

 with a sulphuric color. 



9. It is rare that the dark 

 spots of back expand hori- 

 zontally and that happens 

 only in a small degree. 



10. No glandular dor- 

 sal folds on back. 



11. Skull invariably 

 broader than it is long, in 

 front gradually narrowing. 



12. Vomerine teeth ex- 

 tend slightly behind the 

 level of choance. 



i,,. The nasals form a 

 rectangle or a somewhat 

 blunt angle and meet in a 

 broad ridge on the middle 

 line. 



14. Side borders of fron- 

 to-parietals converging for- 

 wards, upper surface deeply 

 hollowed. 



15. Tectum synoticum tri- 

 angular. 



5. Inner meta-tarsal tu- 

 bercle large, compressed 

 on both sides, projecting; 

 always longer than dis- 

 tance between the subartic- 

 ular tubercle of first toe and 

 inner meta-tarsal tubercle. 



6. The subarticular tu- 

 bercles on toes of hind 

 limbs are largest and 

 strongly projecting. 



7. Vocal sacs milky white. 



8. Spaces between dark 

 marbling on back surface 

 of thighs always filled with 

 sulphur colored spots. 



9. The dark spots on 

 back never expand hori- 

 zontally. 



10. No glandular dorsal 

 folds on back. 



11. Skull generally as 

 broad as long, front part 

 forms a sudden point. 



12. Vomerine teeth gen- 

 erally touch the line joining 

 the posterior border of 

 choance. 



13. The nasals form a 

 blunt angle and do not 

 meet on the middle line. 



14. Side borders of fron- 

 to-parietals converge con- 

 spicuously forwards, upper 

 surface deeply hollowed. 



15. Tectum synoticum 

 quadrangular. 



