2. KANA. 



and I therefore do not hesitate to unite HaplohatracJms oeylanieus 

 ■with jRcma tigrina. 



The common Sana esculenta furnishes a similar example in favour 

 of this view. In this species the inner metatarsal tubercle is liable 

 to considerable variation. Some specimens, especially those from 

 S. Europe, N. Africa, and W. Asia, exhibit it blunt, small, one third 

 the length of the first toe ; most of those from Northern and Central 

 Europe have it compressed, about half as long as the first toe ; 

 most of the Chinese and Japanese specimens have it still stronger, 

 very frequently quite as long as the first toe, and closely resembling 

 the spur of Pelohates. I may add that I am inclined to consider 

 Hoplohatraehus reinhardti, Peters, as based upon one of these oriental 

 specimens of B. esculenta ; and that I saw some time ago in the 

 Paris Museum a large specimen of the same species labelled Hoplo- 

 hatraehus davidi, sp. n. 



On the other hand, in some species of Pyxieephalus, viz. P. nata- 

 lensis and P. rugosus, the metatarsal tubercle is not more developed 

 than in that form of B. eseidenta which is intermediate between 

 the extremes. 



As regards the stouter habit and the thicker head of Pyxicephalus 

 as compared with Bana, we must bear in mind that the latter genus 

 includes some very stout species, and that P. natdlensis has the head 

 very much like the majority of the species of Bana. 



Synopsis of the Species. 

 I. Pax^akctic Species. 



A. Tips of fingers and toes not dilated ; beUy smooth. 



1. Vomerine teeth between the choanse ; a glandular lateral 



fold ; toes entirely webbed. 

 Fingers pointed ; glandular lateral fold as 

 broad as the upper eyelid ; a dark band 

 along the hinder side of the thighs .... 38. plancyi, p. 37. 

 Fingers blunt ; glandular lateral fold nar- 

 rower than the upper eyehd ; hinder side 



, of thighs marbled 39. esculenta, p. 38. 



Upper eyelid glandular and distinctly porous 40. porosa, p. 40. 



2. Vomerine teeth between the choanae ; no glandular lateral 



fold ; toes incompletely webbed. 

 Skin very warty 33. rugosa, p. 35. 



3. Vomerine teeth extending beyond the level of the hinder 



edge of the choanse ; a glandular lateral fold ; toes in- 

 completely webbed ; a dark temporal spot. 

 a. Tibio -tarsal articulation not or hardly reaching the tip 

 of the snout. 

 Inner metatarsal tubercle blunt ; snout 



obtuse 50. temporaria, p. 44. 



