1825.] Mr, Gray on the Genera of Reptiles, 203 



P. serpentinus, Merren. Lacerta apus, Pallas, Chamaisaura 

 apus, Schneid. Bipes sheltopusik, Bonnat, Sheltopusik didac- 

 tylus, Lat, Seps. sheltopusik, Daud. Russia. 



7. Opmiosaurus, Daud. Hyalinus, Merre^Tz. 



Head shielded ; body with a distinct lateral line ; feet none, 

 (hid under the skin) ; drum of the ear apparent; teeth in the jaws 

 and palate. 



0. ventralis, Daud. Anguis, Lin, Chamsesaura, Sckneid, 



8. Anguis, Lin, Cuv. 



Head shielded ; body without any lateral line ; feet none (hid 

 under the skin) ; drum of the ears covered with the skin ; teeth 

 only in the jaws. rcf 



A. fragihs, Lin, 



9. AcoNTiAs, Cnv, Eryx, Daud, 



Head shielded ; the anterior shield projecting over the mouth, 

 lateral line not distinct ; feet none, nor no bones (hid under the 

 skin) ; drum of the ears covered with the skin ; teeth in the jaws 

 and palate, allied to the next family. 



*Eyes distinct. A. Meleagris, merrem, Anguis, Lin. Eryx 

 Meleagris, Daud, ^'^Eyes hid with the skin. A. caecus, 

 Cuv, 



^ 2. Body covered with intricate scales; anus terminal. 



Fam. III. TvPHLOPiDiE, Gray. 



Body cylindrical, covered with imbricate scales ; feet or legs 

 none ; head shielded, muzzle advanced ; tongue long, forked 

 extensile ; anus terminal ; drum of the ear hid under the skin. 



■ 1. Typhlops, Schneider. 



Eyes visible under the skin. 



Dr. Waggler has published a genus under the name of Stenos- 

 toma which does not appear to differ from this or Acontias, 



§ 3. Body covered with rings of square scales, 



Fam. IV. AMPHisBiENiDiE, Gray. 



Body cylindrical, covered with rings of square scales ; feet or 

 legs none ; head and sometimes the chest shielded ; tongue 

 short, cut ; teeth conical only in the jaws ; anus terminal ; drum 

 of the ear hid under the skin. 



1. Amphisb/ena, Lin. 



Body covered with rings of uniform sized square scales ; head 

 shielded ; anus with a series of pores in front. 

 A. alba, Lin, 



