92 



4. CHIROMANTIS. 



Cliiromautis, Peters, Arch. f. Naturq. I800, p. 56 ; Giinth. Cat. p. 84 ; 



Cope, Nat. Hist. Eev. 18G5, p. 11(3. 

 Polypedates, sp., Giinth. Proc. Zool. Soc. 1868, p. 436. 



Pupil horizontal. Tongue free and deeply notched behind. Vo- 

 merine teeth. Tympanum distinct. Fingers more or less webbed, 

 the two inner opposite to the two outer ; toes webbed : tips of 

 fingers and toes dilated. Outer metatarsals separated by web. 

 Omosternum aud sternum with a bony style. Terminal phalanges 

 obtuse. 



Tropical Africa. 



This genus closely approaches the preceding, from which it differs 

 in the curious disposition of the fingers, the two inner being oppos- 

 able to the two outer, resembling to a certain point the grasping 

 hand of Chameleons. This character, however, is much less deve- 

 loped in C rufescens, which constitutes a link towards Hhaco- 

 pliorus. 



Synopsis of the Species. 



Outer fingers nearly entirely webbed .... 1. rufescens, p. 92. 



Outer fingers half webbed 2. xerampelina, p. 93. 



Outer fingers one-third webbed 3. pctersii, p. 93, 



1. Chiromantis rufescens. (Plate IX. fig. 2.) 



Polypedates rufescens, Giinth. Proc. Zool. Soc. 1868, p. 486. 

 Chiromantis guineensis, Buchh. ^ Peters, Mon. Berl. Ac. 1875, p. 203, 

 pi. 1. f. 1. 



Yomerine teeth in two oblique groups between the choanae. 

 Head longer than broad ; snout rounded, longer than the greatest 

 orbital diameter, with indistinct canthus rostralis ; loreal region not 

 concave ; nostril much nearer the tip of the snout than the eye ; 

 interorbital space broader than the upper eyelid ; tympanum half 

 the width of the eye. Inner fingers webbed at the base, outer ones 

 nearly to the disks'; toes moderate, entirely webbed ; disks of fingers 

 as laro-e as the tympanum, of toes smaller ; subarticular tubercles 

 small; a small inner metatarsal tubercle. The hind limb being 

 carried forwards along the body, the tibio-tarsal articulation reaches 

 between the eye and the tip of the snout. Above with a few small 

 tubercles; beneath granular ; a fold above the tympanum. Upper 

 parts brown; a rather indistinct dark cross band between the 

 eyes. 



W. Africa. 



a. Hgr. W. Africa. (Type.) 



