Pygoi'IS, Fitz., Merrcm. 

 Bipes, Cue. Hysteropus, Dum. et Bib. (!) 



Head short, truncated, rounded. Rostral plate large, 

 with 2 parietal and a pair of occipital plates. Pupil cir- 

 cular. Scales of the back keeled. Ear ovate. Vent with 

 a series of pores in front. Hinder limbs elongate, ovate, 

 compressed, scaly. Tail cylindrical, rather tapering. 



The PvGOPUS. Pygopus lepidopodus. 



Pypogus lepidopus, Gray, Cat. Kept. B. 71/. 67. 



Bipes lepidopodus, Lriccp. Ann. Mus. H. N. iv. 193, 

 •209, t. bb,f. 1. Schinz, Ahhild, t. 42,/. 2. 



Pygopus lepidopus, Menem, Tent. 77. 



Hysteropus lep. Bory, Res. Erpet. 142, t. 27, f. 2. 



H". Nova? Hollandiw, Dum. et Bib. E. G. v. 828, /. 55. 



Sheltopusik Nova3 Hollandia;, Oppel, Rept. 40. 



Coppery grey, with 5 series of oblong, 4-sided, while- 

 edged, black spots and some oblique black streaks on the 

 side of the neck ; muzzle with 2 pair of broad transverse 

 frontals, similar in shape to the nasals. 



Inhabits Australia. 

 The Scaly-faced Pygopus. Pygopus squamiceps. 

 Plate 8, fig. 3. Animal and head. 



Pygopus squamiceps, Gray, Cat. Rept. B. M. 68. 



Muzzle with 5 series of frontal jdates ; grey, with a se- 

 ries of small spots on each side. 



Inhab. W. Australia. 



I have only seen a single specimen ; it may only prove 

 a monstrosity of the former, with which it agrees in most 

 characters, except those above mentioned. 



Delma, Gray. 

 Pygodactylus, part, IVeigin. 



Head elongate, shielded, with 2 pai-ietal and a pair of 

 large occipital shields. Rostral plate transverse, moderate. 

 Eye circular ; pupil elliptical, erect. Ears ovate, open, 

 simple-edged. Body subcylindrical. Tail tapering. Scales 

 smooth. Hinder limbs short, scaly. Vent without any 

 pores in front. 



Eraser's Delma. Delma Fraseri. 



Delma Fraseri, Gray, Zool. Misc. 14. Grey's Trav. Aus. 

 ii. 427, t. 4,/. 3. Cat. Rept. B. M. 68. 



Olive, head white, with 4 more or less confluent black 

 bands ; sides of neck white-spotted, beneath white. 



Inhab. New Holland. 



Fani. Aprasiad.e. 

 Nostrils small, in the sutin-e between the top of the front 

 upper labial and the anterior frontal. Head small, half 

 conic, shielded. Muzzle rather produced, acute. Fron- 

 tals large, 2 pair, covering the cheeks. Vertebral shield 

 large, elongated, 6- sided. Superciliary shields 2 pair, small. 

 Labials few, large. Eyelid rudimentary, circular, edged 

 with a series of small scales. Pupil ro\md. Ears hidden 

 under the scales. Body and tail cylindrical, tapering, co- 

 vered with hexagonal scales and rather broader ventral 

 shields. Limbs none. 



Aprasia, Gray. 



Limbs none. Scales smooth. 



By some mistake, the slip containing the description of 

 this genus in uiy Sj-nopsis of Slender-tongued Saurians, 

 [Ann. N. H. ii. 362), accidentally got into tlie wrong place, 

 with Tiliqun, instead of being near Anyuis. 



The Aprasia. Aprasia pulchella, Grai/, Ann. N. H. ii. 

 332. Grey's Trav. Austr. ii. 428—438,' t. 4, /'. 2. Cat. 

 Rept. B. M. 68. 



Pale brown, with a series of brown spots, one spot in the 

 centre of each scale ; sides with the spots more connected, 

 fonning interrupted streaks ; lips yellow. 



Lihab. Western Australia. 



Fam. LiALisiD.E. 



Head covered with rather imbricate scales. Cheeks 

 scaly. Muzzle flattened in front. Nostrils in the hinder 

 edge of a small nasal shield, in front of the face-ridge. 

 Eyelid rudimentary, circular, scaly. Pupil elliptical, erect. 

 Ears distinct. Body elongate, subcylindrical. Scales 

 oval, smooth, imbricate. Belly with 2, tail with 1, series 

 of larger shields. Limbs 2, ]Dosterior, short, undivided, 

 flat, scaly. Tail rather tapering, elongate. Vent with a 

 series of pores in front, each placed in the front edge of a 

 scale. 



LiALis, Gray. 



The only genus. 



Burton's Lialis. Lialis Burtoni, Gray, Proc. Z. Soc. 

 1834, 134. Grey's Trav. Austr. ii. 437, t. 3, /". 1. Zool. 

 Misc. 52. Cat. Rept. B. M. 69. Dum. et Bib. E. G. v. 831. 



Above grey olive, in spirits, with 5 rather interrupted 

 brown longitudinal streaks, the central streak divided into 

 two over the nape, and united together again over the nose; 

 the outer lateral streaks narrowest and more interrupted, 

 edged with the two colours ; beneath blackish grey, with 

 large white spots ; lips and streak under ear and along the 

 side of the neck white. 



Inhab. Western Australia and Houtman's Abrolhos. 



The Two-lined Ll\lis. Lialis bicatenata. 

 Plate 7, fig. 1. 



Lialis bicatenata, Gray, Zool. Misc. 52. Cat. Rept. B. 

 M. 69. 



Above brown grey, in spirits, with a series of distant 

 black spots (one on the centre of each scale) along each 

 side of the back ; top of the head and nape with an indis- 

 tinct double band, forming an elongated loop ; beneath 

 blackl.sh grey, whitish dotted ; chin and throat blackish, 

 white-spotted ; lip-shields brown. 



Inhab. Western Australia ? May be only a variety of 

 Ij. Burtoni, but very differently coloured. 



The Dotted Lialls. Lialis pimctulata. 

 Plate 8, fig. 1. 

 Lialis punctulata. Gray, Zool. Misc. 62. Cat. Rent. 

 B. M. 69. 



