Art. VII. — Description of two new Species of Lizards 

 from Central Australia. 



By A. H. S. Lucas, M.A., B.Sc, and C. Frost, F.L.S. 



Ophidiocephalus, gen. now 



Parietal bones distinct. Tongue nicked at the tip, inferiorly 

 with six longitudinal ridges bearing papilla?. Ear hidden. 

 Rudiments of hind limbs externally. Head with symmetrical 

 plates. Scales smooth, cycloid, hexagonal, imbricate, all similar, 

 subequal. No pneanal pores. 



Ophidiocephahis adds a new genus to the Australian family of 

 snake-like lizards (Pygopodidtz). Its nearest ally is Delma. In 

 De/ma, however, the ear is exposed, and there are two median 

 series of transversely enlarged ventral scales. 



O. tceniaius, sp. nov. 



Snout very prominent, pointed, as long as the distance behind 

 the eye of the posterior border of the parietals; no distinct 

 canthus rostralis; eye very small, without a distinct circular 

 scaly lid ; ear hidden. Tail about once and one-half the length 

 of the head and body. The rudimentary limbs as long as the 

 distance between the eye and the nostril. Rostral large, pro- 

 iecting, triangular, twice as broad as high ; nostril pierced between 

 the first labial, the nasal, and the fronto-nasal; a pair of narrow 

 nasals, a pair of narrow fronto-nasals and a pair of large pre- 

 frontals; frontal large, hexagonal, about as long as its distance 

 from the rostral; a pair of large parietals; a pair of temporals 

 and a pair of enlarged scales separated by a small azygos scale 

 border the parietals; two supra-orbitals, a loreal, a post-ocular 

 and a series of small scales between the eye, the labial, and the 

 loreal ; six upper labials, the fourth below the eye, and five lower 

 labials; mental large, truncate behind; first lower labials narrow, 

 not meeting behind the mental. Sixteen longitudinal rows of 

 scales around, the middle of the body, subequal. Dorsal surfaces 

 uniformly cream-coloured; lateral and ventral brownish-grey, each 

 scale with a light border. 



