2. EANA. 9 



and I therefore do not hesitate to unite Hoplohatrachus ceyUnicus 

 with Mana tignna. 



The common Rami esndenta furnishes a similar exami^le in favour 

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

 to considerable variation. Some specimens, especially those from 

 Tu -'^^''^P^ ^^- '^f"<^a, and W. Asia, exhibit it blunt, small, one third 

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

 J^.urope 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 resembfiuo^ 

 .he spur oi Pelohates. I may add that I am inclined to consider 

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

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

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

 batrachus davidi, sp. n. 



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

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



than m that form of R. esculeMa which is intermediate between 



the extremes. 



As regards the stouter habit and the thicker head of Pyxicephcdus 



as compared with Rana, we must bear in mind that the latter -enus 



includes some verj- stout species, and that P. natalensis has the\ead 



very much like the majority of the species of Rana. 



Synopsis of the Si^ecies. 



I. PAXiEAECTic Species. 



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



1. Vomerine teeth between the choan* ; 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. planan, p. a7 

 Fingers blunt ; glandular lateral fold nar - 

 rower than the upper eyelid ; hinder side 



of thighs marbled . . . .' 39. escident<>, p. 38. 



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



2. Vomerine teeth between the choante ; no glandular lateral 



fold ; toes incompletely webbed. 

 Skin very warty 33. ,.„^^^^,^ p_ 3.^ 



3. Vomerine teeth extending beyond the level of the hinder 



edge of the choanaj ; a glandular lateral fold : toes in 

 completely webbed ; a dark temporal spot. 



a. Tibio-tarsal articulation not or hardly reachin<^ the tin 

 of the snout. ° ^ 



Inner metatarsal tubercle blunt; snout 



°^^^'^ 50. tempomria, p. 44. 



