326 sciNCiD^. 



than the interparietal ; parietals forming a suture behind the inter- 

 parietal ; four pairs of nuchals ; fifth upper labial below the centre 

 of the eye. Ear-opening minute, punctiform, scarcely larger than 

 the nostril. 20 smooth scales round the middle of the body ; dorsals 

 largest. A pair of enlarged prjeanals. The length of the hind limb 

 equals the distance between tbe centre of the eye and the fore limb ; 

 fourth toe longer than third, with 17 or 18 smooth lamellae in- 

 feriorly. Tail thick, about ouce and a half the length of head and 

 body. YcUowish brown above, with brown dots, the largest of 

 which form two scries along the median dorsal scales : dark dots 

 smaller and crowded on the sides ; lower surfaces yellowish. 



134. Lygosoma peronii. 



Tetradactylus decresiensis, Gray, Cat. p. 86. 

 Seps peronii, Fitzing. N. Class. Eept. p. 53 ; Gray, Griff. A. K. ix. 



Syn. p. 72. 

 Tetradactylus decresiensis, Cuv. R. A. 2nd ed. ii. p. 64 ; Dum. 8f 



Bihr. V. p. 764 ; Gray, Zool. Ereh. S,- Terr., Rept. pi. vi. fig. 4 



(and details of head, hg. 1). 

 Hemiergis decresiensis, part., Steind. Novara, Rept. p. 50. 



Body much elongate ; limbs very weak, tetradactyle ; the distance 

 between the end of the snout and the fore limb is contained twice 

 to twice and two thirds in the distance between axilla and groin. 

 Snout short, obtuse. Lower eyelid with an undivided transparent 

 disk. Nostril pierced in the nasal ; no supranasal ; frontonasal 

 broader than long, forming a narrow suture with the rostral and 

 with the frontal ; latter shield scarcely longer than the interparietal, 

 in contact with the first and second supraoculars ; four supra- 

 oculars, second largest ; seven or eight supraciliaries ; frontoparietals 

 distinct, nearly as long as the interparietal ; parietals forming a 

 suture behind the interparietal ; two or three pairs of nuchals ; 

 fifth upper labial below the centre of the eye, from which it is 

 separated by a series of suboculars. Ear covered with scales, 

 indicated by a depression. 18 or 20 smooth scales round the middle 

 of the body ; dorsals largest. A pair of enlarged praeanals. The 

 length of the hind limb equals the distance between the centre of 

 the eye and the fore limb ; third toe longest. Tail thick, once and 

 a half to once and two thirds the length of head and body. Pale 

 brown or golden above, with or without minute brown dots ; a 



