LIZAEDS. 89 



tal large, truncated in front, 2 frontoparietal and interparietal 

 similar in size. Body elongate, subcylindrical. Scales smooth. 

 Legs 4, far apart, weak, short. Toes 3-3, very small, unequal, 

 middle longest, the hinder outer smallest. Tail elongate, sub- 

 cylindrical, tapering, with a central series of broader scales be- 

 neath. The 2 central preanal scales larger. 



The SiAPHos. Siaphos equalis. Gray, Griffith, A. K. ix. 72, 

 Ann. N. H. iii. 334. Zool. Erebus and Terror, Rept. t. Weigm. 

 H. M. ii. vSeps equalis. Gray, Ann. Phil. x. 1825, 202. Anguis 

 lacertina, E. W. Gray, B. Mus. 1804. Hemiergis Decresiensis, 

 part, Diim. et Bib. E. G. v. 767. 



Pale olive ; sides of body and tail black, beneath white. 



a. In spirits, bleached. New Holland ? 



b. In spirits. Australia. Presented by the Earl of Derby. 



16. Rhodona, (rray. B-onh, Gray. BYaichjstO])us, Dum.et Bib. 



Muzzle rather wedgeshaped. Rostral rather depressed, round- 

 ed in front. Frontoparietal plates 2. Nostril on the ridge in the 

 middle of a large triangular nasal plate, which converge together 

 in front. Supranasal none. Tongue flat, covered with granular 

 papillae, nicked at the tip. Teeth blunt. Palate toothless, with 

 a short posterior groove. Ears very small. Eyes small. Lower 

 eyelid transparent. Body cylindrical, rather elongate. Scales 

 smooth. Legs 4, far apart, the front pair simple, undivided, ta- 

 pering, the hind pair divided into 2 unequal subcylindrical sim- 

 ple clawed toes. Tail conical, pointed, with 3 or 5 series of larger 

 scales beneath. 



The Dotted Rhodona. Rhodona punctata, Gray, Ann. N. 

 H. ii. 335. Brachystopus lineapunctulatus, " A. Smith, i^i^S'S'." 

 31us. Chat. Dum. et Bib. E. G. v. 779. Ronia catenulata, Gray 

 in Grey Trav. Aust. ii. 426, 437, t. 4,/. 1. 



Greyish silvery, with 6 or 8 series of small black specks, one in 

 the centre of each scale, beneath white. 



a, b. Adult, in spirits. W. Australia. From Mr. Buchanan's 

 collection. 



c—f. Adult, in spirits. W. Australia. From Mr. Gilbert's col- 

 lection. 



17. SoRiDiA, Gray. Praepeditus, Dum. et Bib. 



Head wedge-shaped. Muzzle half conic. Rostral convex 

 above, sharply keeled in front. Frontoparietals and interparietal 

 united into a single triangular plate, internasal and frontal broad, 

 separated by a broad straight suture. Nostrils lateral, in the mid- 

 dle of a triangular oblique nasal, supranasal none. Tongue scaly. 

 Ears hidden under the skin. Body cylindrical. Scales smooiii. 



i3 



