268 CYSTIGNATIIID.E. 



compressed, generally shovel-shaped. Outer metatarsals united. 

 Omosternum cartilaginous ; sternum a cartilaginous plate. Diapo- 

 physes of sacral vertebra slightly dilated. 

 Australia. 



Sy)t,oj)sis of the Species. 

 I. Toes entirely webbed ; tympanum indistinct. 



Tongue entire 1. platycephalus, p. 268. 



II. Toes not more than half webbed ; tympanum very distinct. 



1. Inner metatarsal tubercle large, shovel-shaped; no outer 

 tubercle. 



Tongue subcircular ; nostril equally dis- 

 tant from the eye and the tip of the 



snout ; toes hardly one-third webbed . . 2. brevipahnatus, p. 269. 

 Tongue elliptic ; nostril a little nearer 



the tip of the snout than, the eye ; toes 



not half webbed 3. brevipes, p. 269. 



Head large ; snout twice as long as the 



greatest orbital diameter ; toes nearly 



half webbed 4. austrcdis, p. 269. 



Head moderate ; snout not twice as long 



as the greatest orbital diameter ; toes 



half webbed 5. alboijuttatus, p. 270. 



2. Two metatarsal tubercles, the inner small, but little larger 

 than the outer. 



Tympanum close to the eye 6. inermis, p. 271. 



1. Chiroleptes platycephalus. (Plate XVII. fig. 4.) 

 Chiroleptes platycephalus, Gtinth. Ann. fy Mag. N. H. (4) xi. p. 350. 



Tongue subcircular, entire. Vomerine teeth in two groups be- 

 tween the choana?. Head large ; snout rounded, nearly twice as 

 long as the orbital diameter ; nostril equally distant from the eye and 

 the tip of the snout ; interorbital space broader than the upper eyelid ; 

 tympanum indistinct, three fourths the diameter of the eye. Fingers 

 moderate, first much longer than second ; toes short, entirely webbed ; 

 suburticular tubercles very small ; inner metatarsal tubercle strong, 

 shovul-like ; a flat, rather indistinct outer metatarsal tubercle. The 

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

 articulation reaches the tympanum. A few small tubercles on the 

 back; belly minutely granular. Uniform greenish olive above; 

 throat with a few small greenish spots. 



Port Bourke, Australia. 



a. $ . Fort Bourke. Sydney Mus. (Type.) 



