26 REPTILES. 



genus for it (as if it were a new and remarkable form), but likewise 

 have overlooked the characteristic figure of it in a work so well 

 known as the " Zoology of the Beagle." As for the vocal sac — 

 which is wanting altogether according to HaUowell's examination — 

 the internal subgiilar vocal sac is not only present, but the usual 

 openings on each side of the tongue are so large (even in a rather 

 small, of coiu'se male, individual) that a tliick pencil may be introduced 

 into them. I have but little doiibt that Spix has already given a 

 description of this animal, with a bad figau'e, as Rami scutata. 

 "VVagler aftei^wards fonued it into his genus Hemiphractus. 



14. HETEROGLOSSA. 



Head nearly as long as the body, and about as long as broad ; 

 nine teeth in the lower jaw (?) ; no palatine teeth ; eustachian tubes 

 small ; tongue suboval, deeply notched behind, attached by a cylin- 

 drical pedicel at the centre, entirely free in its posterior half, bound 

 down anteriorly along the middle line by cellular tissue, reaching 

 from the tip to the pedicel, free laterally except at the a^^ex ; fingers 

 free ; toes webbed at the base ; tympanimi distinct {HaUoivell). 

 Sacral vertebra ? 



Heteroglossa, Hallowell, Proc. Ac. Phi/ad. 1857, p. G4. 



1. Heteroglossa africana. 



Hallo well, I. c. 

 Chocolate-brown above ; abdomen ash-coloured. Gaboon. 



Fam. 2. CYSTIGNATHID^. 



Ranina with free toes, cj'lindi-ical processes of sacral vertebra, 

 and without paratoids. 



Synopsis of the Ocnera. 



1. Cystignathus. Vomerine teeth in two groups or in two oblique 



or curved series ; never a large gland. Tropical America ; 

 Africa (Australia). 



2. Pleurodema. A large gland on each loin. South America. 



3. Limnodynastes. Vomerine teeth in a straight line ; no large 



gland on the loin. Australia. 



1. CYSTIGNATHUS. 



Extremities moderate ; fingers quite free ; toes free, sometimes 

 veiy slightly webbed or fiinged. Skin smooth, or with cutaneous or 



