The Lizards indigenous to Victoria. 35 



Teguments. 



The body is covered with roundish, imbricate scales, and the 

 head is more or less regularly plated with larger scales. The 

 skin of the head quite free from the subjacent skull-bones. 



Endo-skeleton. 



Skull rather depressed. Pn^maxillary single, narrowed, much 

 produced posteriorly between the nasals. Nasals distinct. 

 Frontal single. Prsefrontals and postfrontals in contact, separ- 

 ating the frontal from the orbit. Jugal rudimentary, there being 

 no postorbital arch. No postfronto-squamosal arch. Pterygoids 

 widely separated, without teeth. Mandible of four bones, the 

 angular, supra-angular and articular having coalesced. 



Teeth pleurodont, small, numerous, closely set. 



Litnb-arches. — Pectoral arch very rudimentary. The ischium 

 appears externally as a small spur on each side behind the anal 

 cleft. Bones of hind-limb, including phalanges of five toes, 

 present but small. 



Pygopus, Merr. 



Parietal bones distinct. Tongue slightly nicked at the tip, 

 with rows of large round papillfe inferiorly. Ear exposed. 

 Rudiments of hind-limbs externally. Head with large symmet- 

 rical plates. Scales cycloid-hexagonal, imbricate, those on the 

 back keeled, the two median series on the belly and the median 

 series under the tail transverely enlarged, hexagonal, Prajanal 

 pores in both sexes. 



The distribution of this monotypic genus is the same as that 

 of the single species, Australia and Tasmania. 



PyCxOPUS lepidopus, Lacepede. 



Pygopus lepidopus. Gray, Cat., p. 67. 



Pygopus squainiceps, Gray, Cat., p. 68. 



Pipes lepidopus, Lacep., Ann. Mus. iv., 180i, p. 209, pi. Iv., fig. 

 1 ; Guerin, Icon. R. A., Rept., pi. Ixi., fig. 1 ; Duvern. R. A., 

 Rept., pl. xxii., vis. fig. 2. 



