116 ■RASIBX. 



of the upper eyelids, and extending from the eye, over the tympa- 

 num, to the shoulder. Upper parts brown, marbled with darker ; 

 upper lip and sides of body and limbs with small light spots ; hind 

 limbs cross-barred ; uniform whitish beneath. Male with two in- 

 ternal vocal sacs. 



The longer hind limbs and the smaller head give this species a 

 much more slender appearance than the preceding ; the proportions 

 of the fingers are also important differences between the two 

 species. 



Ceylon. 



a-b. tj . Ceylon. G. H. K. Thwaites, Esq. [P.]. 



10. AETHROLEPTIS. 



Arthroleptis, Smith, III. S. Afr., Rept., App. p. 24; Gilnth. Cat. 



p. 135; Cope, Nat. Hist. Rev. 1865, p. 116. 

 ? Heteroglossa, Hallow. Proc. Ac. Philad. 1857, p. 64 ; Oiinth. I. c. 



p. 26 ; Cope, I. c. p. 117. 

 Hemimantia, Peters, Mon. Perl. Ac. 1863, p. 451 ; Cope, I. c. p. 115. 



Pupil horizontal. Tongue heart-shaped, free behind. Vomerine 

 teeth none. Tympanum distinct or hidden. Fingers free ; toes 

 nearly free, with blunt or slightly dilated tips. Outer metatarsals 

 united. Omosternum and sternum with a bony style. Terminal 

 phalanges simple. 



Africa. 



Synopsis of the Species. 



I. Toes very slightly webbed, nearly free. 



A. Skin smooth above. 



A single metatarsal tubercle 1. wahlhergii, p. 117. 



A single metatarsal tubercle ; third finger 



twice as long as second 3. 'macrodacti/lus,-p.ll7 . 



Two metatarsal tubercles; tympanum 



hidden 5. hoettgeri, p. 118. 



A tarsal and two metatarsal tubercles .... 4. dispar, p. 117. 



B. Skin with tubercles or warts above. 

 A single metatarsal tubercle ; a fold along 



the sides of the body 2. pcecihnotus, p. 117. 



Three metatarsal tubercles ; a spine-like 



dermal appendage on the hind part of 



each eyelid 6. calcaratus, p. 118. 



Head'distinctly broader than the body. ... 7. horridus, p. 118. 



II. Toes very distinctly webbed. 



Head nearly as long as the body; belly 



smooth 8. africanus, p. 119. 



