LIZARDS. 55 



The Barissia. Barissia imbricata, Gray^ Ann. N. H. i. 390. 

 Zool. Beecheifs Voy. Rept. 99, t. 31,/. 1. Gerrlionotus imhrica- 

 tus, Weigm. H. M. 34, t. 10,/. 2, orDum. et Bib. E. G. v. 407. 



Greenish grey, varied with olive ; scales of the back keeled, 

 ending in a point, of the lower part of the sides smooth, in 37 cross 

 bands ; ventral shields 12-rowed. 



a. Adult, in spirits. Wants end of tail. Mexico. Presented by 



J. E. Gray, Esq. 



The Rough-necked Barissia. Barissia rudicollis, Gray, 

 Ann. N. H. i. 390. Gerrhonotus rudicollis, Weigm. H. M. t. 10, 

 /. 1,4. Bum. et Bib. E. G. v. 410. 



Greenish grey, varied with olive and dotted with black ; sides 

 blackish banded; scales of the back and sides large, keeled, point- 

 ed behind, in 28 cross rows ; ventral shields 14-rowed. 



Inhab. Mexico. Mus. Berlin. 



The Speckled Barissia. Barissia lichenigerus. Gray., Ann. 

 N. H. i. 390. Gerrhonotus lichenigerus, IVagler, Icon. t. 34,/. 2. 

 Weigm. H. M. 35. Dum. et Bib. E. G. v. 408. G. adspersus, 

 Weigm. H. M. t. 10,/. 6. 



Olive, whitish spotted, and with a v/hitish streak on each side; 

 scales of the back keeled, not pointed, of the sides smooth, in 39 

 cross series; ventral shields lO-rowed. 

 ^ Inhab. Mexico. Mus. Berlin. 



b. Snake-like. Legs 2, rudimentary or none. Ears small. Eye- 

 lids distinct. Nostrils in a shield. Supranasal shields band- 

 like, many pairs, ivith a central suprarostral. Tongue granular 

 in front, villose behind. Pseudopina. 



17. Pseudopus, Merrem. Bipes, Oppel, Wagler. Proctopus, 

 Fischer. Hisieropus, Bory. Oharasesaura, part, Schneid. 

 Seps, part, Baud. Ophisaurus, part, Eichwald. 



Head pyraraidical, 4- sided ; suprauasals many, band-like, 

 transverse. Palate toothed. Nostrils lateral in a nasal plate. Ears 

 very small. Body elongate, lateral groove double. Legs 2, pos- 

 terior, rudimentary, undivided. The Eastern World. 



The Sheltopusik. Pseudopus Pallasii, Cuv. It. A. ii. 69. 

 Bum. et Bib. E. G. v. 417. Gray, Ann. N. H. i. 391. Lacerta 

 apoda, Pallas, N. Com. Petrop. xix. 435, t. 9-10. L. apus, Gmel. 

 S. N. 1079. Pseudopus serpentinus, Merrem, Tent. 78. Bipes 

 Pallasii, Oppel, Kept. 43. Wagler, Icon. t. 14. Sheltopusik di 

 dactylus, Latr. Rept. ii. 273. Seps Sheltopusik, Baud. Rept. iv. 

 351. Mem. Soc. Mosq. ix. t. 2, 3. P. Oppellii, Bory, Exp. Mo- 

 rea, t. 12, 13. Bonap, Faun. Ital. t. 



