7. MYOBATEACHTTS. 8. EHINOPHETNUS. 329 



Pupil erect. Tongue small, elliptical, entire and free behind. 

 Palate smooth. Tympanum distinct. Pingers and toes free, the 

 tips not dilated. Outer metatarsals united. Epiooracoid cartilages 

 narrow, scarcely overlapping; no omosternum; sternum cartila- 

 ginous, ossified on the median line. Diapophyses of sacral vertebra 

 rather strongly dilated. Terminal phalanges simple. 



Australia. 



1. Myobatrachns gouldii. 



Myobatrachus paradoxus, Oiinth. Cat. pp. 8 & 128. 

 Ohelydobatrachus gouldii, Oiinth. I. c. p. 63. . 

 Breviceps gouldii, Gray, in Grey's W. Austr. ii. p. 448, pi. i. f. 1. 

 Myobatracnus paradoxus, Schley. Proc. Zool. Soc. 1850, p. 9, and 



Randl. Bierk. ii. pi. 4. f. 76 ; Peters, Mon. Berl. Ac. 1867, p. 37. 

 Myobatrachus gouldii. Gray, Proc. Zool. Soc. 1850, p. 10. 



Habit extremely stout. Head very small, with short rounded 

 snout ; canthus rostralis absent ; crown swollen ; eye very small ; 

 tympanum more or less distinct, rather larger than the eye. Limbs 

 excessively short ; fore limb very strong, adapted for burrowing ; 

 fingers short, much depressed ; hind limb weaker ; toes not longer 

 than the fingers, also much depressed ; subarticular tubercles in- 

 distinct ; two rather indistinct flat metatarsal tubercles, outer 

 largest. Skin smooth, or with small scattered tubercles. Above 

 greyish brown, beneath lighter. Male wit^j a subgular vocal sac. 



W. Australia. 



8. RHINOPHRYNUS. 



Rhinophrynus, Dum. ^ Bibr. viii. p. 127 ; Oimth. Cat. p. 127; Cope, 

 Nat. Hist. Rev. 1865, p. 100. 



PupU erect. Tongue elongate, subtriangular, free in front. 

 Palate smooth. No tympanum. Pingers free ; toes webbed, the 

 tips not dilated. Outer metatarsals united. Epicoracoid cartilages 

 narrow, scarcely overlapping; no omosternum; sternum rudimen- 

 tary. Diapophyses of sacral vertebra rather strongly dilated. Ter- 

 minal phalanges simple. 



Mexico. 



1. Rhinophrynus dor sails. 



Rhinophrynus dorsaHs, Gunth. Cat. p. 127, pi. lii. 

 Rhinophrynus dorsalis, Bum. ^ Pibi: p. 758, pi. 91. f. 2 ; Oiinth. 



P-oc. Zool. Soc. 1858, p. 339. 

 rostratus, Brocohi, Bull. Soc. Philom. (7) i. p. 196, and Miss. 



Sc. Mex., Batr. pi. 9. f. 1. 



