188 ' CTSIIGNATHIBiE. 



teeth. Ear perfectlj- developed; tympanum distinct. Fingers 

 and toes webbed, the tips dilated into large disks. Outer metatarsals 

 separated ? No omosternum ; sternum a narrow cartilaginous 

 plate. Terminal phalanges bifurcate. 

 Ecuador. 



1. Centrolene geckoideum. 



Centrolene geckoideum, E^ada, I. c, p. 88, and Viaj. Pacif., Vertebr. 

 pi. 2. f. 5. 



Vomerine teeth in two oblique groups . between the ohoanae. 

 Eingers half webbed, the membrane extending as a fringe to the 

 disks ; toes entirely webbed. Humerus with a strong spine. Skin 

 of upper surfaces granular and tubercular. Greyish above ; hands 

 and feet darker. 



Eio Napo, Ecuador. 



3. MIXOPHYES. 



Mixophyes, Gunth. Proc. Zool. Soe. 1864, p. 46 ; Cope, Nat. Hist. 

 Rev. 1865, p. Ill, and Journ. Ac. Philad. (2) vi. 1866, p. 93. 



Pupil vertical. Tongue circular, entire, free behind. Vomerine 

 teeth. Tympanum distinct. Eingers free; toes webbed, the tips 

 not dilated. Outer metatarsals separated by web. Omosternum 

 cartilaginous ; sternum a cartilaginous plate. Terminal phalanges 

 simple. 



Australia. 



1. Mixophyes fasciolatus. 



Mixophyes fasciolatus, Oiinth. Proc. Zool. Soc. 1864, p. 46, pi. 7. 

 f. 1, and Ann, Sf Mag. N. H. (iJ) xiv. p. 31 1 ; Steindachn. Nmiara, 

 Ampk p. 10 ; Kef erst. Arch.f. Nattirg. 1868, p. 255, pi. 5. f. 6. 



Vomerine teeth in two straight series between the ohoanse. Head 

 large ; snout rounded ; interorbital space as broad as the upper 

 eyelid ; tympanum three fourths the width of the eye. Eingers and 

 toes slightly swollen at the tips ; first finger slightly longer than 

 second ; toes two-thirds webbed ; subarticular tubercles well deve- 

 loped ; inner metatarsal tubercle elongate, oval, compressed ; no 

 outer tubercle. The hind limb being carried forwards along the body, 

 the tibio-tarsal articulation reaches the tip of the snout. Skin 

 smooth ; a slight fold above the tympanum. Brownish olive above, 

 indistinctly marbled with darker ; a dark cross band between the 

 eyes ; a black band from the tip of the snout through the eye to 

 behind the tympanum ; Umbs with narrow black cross bars. Male 

 with a subgular vocal sac. 



E. Australia. 



a,b. (5 $ . Clarence River. G. KreflFt, Esq. [P.]. (Types.) 



