14. HTLAMBATES. 15. HTLIXALTTS. 137 



9. Hylamljates dorsalis. 



Hylambates dorsalis, Peters, Mon. Berl. Ac. 1875, p. 209, pi. 3. f. 5. 



Vomerine teeth in two small groups between the choanse. Tym- 

 paiuim one third the width of the eye. Fingers free (?), toes half 

 webbed ; disks moderate ; inner metatarsal tubercle small. The 

 hind limb being carried forwards along the body, the tibio-tarsal 

 articulation reaches the eye. Skin of upper surfaces with a few 

 slight folds and small scattered tubercles ; belly and under surface 

 of thighs granular. Dark brown above, with a broad light band, 

 narrowed posteriorly, along the middle of the back ; limbs cross- 

 barred. 



Yornba, Lagos. 



10. Hylambates microtyinpanum, 



Hylambates micro tympanum, Boettg. Zool. Anz. 1881, p. 47, andAbh. 

 Vev. Brem. vii. p. 185. 



Yomerine teeth in two oblique groups extending beyond the level 

 of the hinder edge of the choanje. Tympanum one third the width 

 of the eye, slightly distinct. Outer fingers webbed at the base ; 

 toes two-thirds webbed ; disks small. Skin smooth, granular on the 

 belly and under the thighs. Grey above, elegantly variegated with 

 blackish, white-edged confluent spots ; sides spotted and speckled 

 with white ; Hmbs cross-barred ; entirely brown beneath. 



Madagascar. 



11. Hylambates? cameronensis. 



Petropedetes cameronensis, Beichenoio, Arch. f. Nature/. 1874, p. 290, 



pi. ix. f. 2. 

 Platymantis cameronensis, Peters, Mon. Berl. Ac. 1875, p. 211. 



Yomerine teeth in two small groups behind the level of the 

 choante. Tympanum half the width of the eye. Fingers free, toes 

 half webbed ; disks moderate ; inner metatarsal tubercle small. 

 The hind limb being carried forwards along the body, the tibio- 

 tarsal articulation reaches the eye. Skin of back with small 

 tubercles and four longitudinal glandular folds ; smooth beneath. 

 Eeddish brown above, with black markings. 



Bambia, Cameroons. 



15. HYLIXALUS. 



Hyloxalus. Espada, Jorn, Sc. Lish. iii. 1670, p. 59. 



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

 teeth none. Tympanum distinct. Fingers free, toes webbed, di- 

 lated into distinct disks, each of which exhibits two leathery dermal 

 scales on the upper side, separated by a fissure. Outer metatarsals 



