LIZARDS. 87 



The Tridactyle. Hemiergis Deci-esiensis, Wagler, Si/s. 160. 

 Dum. et Bib. E. G. v, 766. Gray, Zool. Erebus and Terror, Rept. 

 t. Tridactyliis Decresiensis, Peron, Mus. Par. Cuv. R. A. ii. 



64. Gray, Ann. N. H. ii. 333. Fitz. Class. 53. 



Back olive, with 2 lines of small indistinct black spots and a 

 broad black streak on each side, extending to the tip of the tail, 

 beneath yellowish. 



a. In spirits. Swan River, 



12. Chelomeles, Dum. et Bib. 



Muzzle conical. Nostrils lateral, in the middle of a nasal 

 shield. Supranasal none, 2 frontoparietal and interparietal simi- 

 lar in size. Tongue flat, scaly, nicked at the end. Palate not 

 toothed, notched behind, without any central groove. Teeth co- 

 nical, simple. Ears very small, hidden under the scales. Lower 

 eyelid with a transparent disk. Body cylindrical, elongate. Scales 

 smooth, of the under side larger. Legs 4, far apart. Toes 2-2, 

 subcylindrical, simple, unequal, clawed. Tail elongate, conical, 

 acute. 



The Four-lined Chelomele. Chelomeles quadrilineatus, 

 Dum. et Bib. E. G. v. 774. Gray, in Grey, Austr. ii. 428. Zool. 

 Erebus and Terror, Rept. t. 



Fulvous, with 4 longitudinal black lines, 2 in the middle and 

 1 on each side of the back ; beneath whitish, scales grey-edged. 



a. In spirits. W. Australia, Houtman's Abrolhos. From Mr. 

 • Gilbert's collection. 







■\^ Toes short, thick, cylindrical. 



13. Omolepida. Cyclodus, part, Dum. et Bib. 



Head 4-sided, rounded in front. Nasal ovate, oblique, sub- 

 anterior, nearly contiguous, with the round nostril in the centre, 

 without any curved groove behind. Supranasal none. Rostral 

 triangular, erect. Frontonasal and frontoparietal separate, mode- 

 rate, contiguous, frontal and interparietal distinct, parietal elon- 

 gated. Orbit with a series of small shields beneath. Temple 

 shielded. Ear oblong, simple-edged, deep. Lower eyelid with a 

 series of larger scales. Body and tail subcylindrical, elongate. 

 Scales 6-sided, smooth, of the under side thinner. Limbs 4, short, 

 moderate. Toes 5-5, cylindrical, rather short, subequal Tail 

 elongate, with 3 series of rather larger broad scales beneath. 



M. Bibron arranged this genus with Cyclodus, but it differs from 

 it in the nasal shield being quite flat, without any groove behind 

 the nostrils, and the scales smooth and thin. 



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