URODELA. 



Salamandrida Mecodonta. 



Genus Tylototriton, Andr.^ 



Skull flat, depressed, very short and broad, and surrounded in both sexes by a 

 prominent rounded porous ridge running from the temporals on the outer margins 

 of the frontals, prefronto-lachrymals, premaxillaries and nasals, the ridges of the 

 two sides being continuous anteriorly. A short osseous porous ridge along the parie- 

 tals. Temporals and frontals united into a complete arch ; pterygoids applied to the 

 maxillaries. Teeth in both jaws; palato-vomerine teeth mecodont.^ Paratoids 

 large, auricular, flattened from above downwards. A line along the sides of the 

 body of rounded isolated porous glandular knobs, terminating on the root of the 

 tail. A broad porous vertebral ridge. The extremities of the spinous processes 

 of the vertebrae dilated transversely into a flattened porous ridge for the support of 

 the glandular area of the back. An obscure line of pores from the axilla to the 

 groin. A permanent gular fold from paratoid to paratoid along the under surface 

 of the neck and passing more or less over the nape. Tail long, laterally com- 

 pressed, limbs well developed. Tongue of moderate size, suborbicular, adherent, 

 slightly free at the lateral sides. Vertebrae 46, ribs 16 : 13 dorsal, 1 sacral, and 2 cau- 

 dal ribs, supporting lateral glandular knobs. Skin tubercular. Toes unwebbed, 4, 5. 

 Cloaca slightly produced. 



Tylototriton verrucosus, Andr., Plate LXXVI, fig. 6. 



TT/htotriton verrucosus, kndiV.,VvoQ. Zool. Soc, 1871, p. 423; J. Wood-Mason, Proc. As. Soc 

 Bengal, 1877, p. 53. 



The lateral cranial ridge is subtriangular, and the median ridge runs backwards 

 from inside the apex of the triangle, but not so far as the former, the extremities 

 of which curve inwards like a scroll in front of the paratoids. The paratoids are 

 slightly concave above and auricular in form. The nostrils are placed close to the 

 extremity of the rounded snout, but with a considerable interval between them, and 

 are semicircular with a small valvular flap of skin. The eye is of moderate size ; 



1 Proc. Zool. Soc, Lend., 1871. 



2 Strauch, Mem. de I'Acad. Imp. des Sc. St. Petersb., Ser. vii, t. xvi, 1871. 



