LACERTA.] REPTILIA SAURIA. 291 



A native of the American seas: has occurred, however, in a few in- 

 stances, as a straggler, on the British coasts. The first individual 

 (according to Dr. Fleming) is recorded by Sibbald, as having appeared 

 in Orkney. Dr. Fleming himself states that he has " credible testimony 

 of its having been taken at Papa Stour, one of the West Zetland Islands." 

 Dr. Turton has also mentioned one which was taken in the Severn in the 

 Spring of 1774. This last was placed in a fish pond, where it lived till 

 the Winter. 



ORDER II. SAURIA. 



GEN. 3. LACERTA, Cuv. 



3. L. Stirpium, Daud. (Sand Lizard.) Occipital 

 plate rudimentary ; frontal large, nearly as broad behind 

 as before : temples covered with small plates : abdominal 

 lamellae in six longitudinal rows : fore feet with the third 

 toe longest : femoral pores from twelve to fifteen. 



Lezard des Souches, Edwards in Ann. des Sci. Nat. (1829) tom.xvi. 

 p. 65. Duges, Id. p. 377. 



DIMENS. The following are those of an English specimen. Entire 

 length seven inches: length of the head (measured above to the posterior 

 margin of the occipital plate) nine lines, (underneath from the extremity 

 of the lower jaw to the posterior margin of the collar) one inch and half 

 a line ; of the body (from the collar to the anus) two inches one line ; of 

 the tail three inches ten lines ; of the hind leg one inch three lines and a 

 half; of the fore leg ten lines and a half. These measurements are, how- 

 ever, probably often exceeded. 



DESCRIPT. (Form.') Larger than the common species ; the body and 

 limbs thicker and stronger in proportion to the entire length. Occipital 

 plate rudimentary, very much smaller than the parietal plates ; frontal 

 large, and nearly as broad at its posterior, as at its anterior margin ; 

 space between the eye and the meatus auditorius covered with small 

 plates of various sizes : collar composed of eleven lamellae ; the margin 

 irregularly toothed or notched : pectoral triangle well-defined : abdominal 

 lamellae in six longitudinal rows ; the two middle rows much narrower 

 than the adjoining ones, with the lamellae of a parabolic form : ante-anal 

 lamella single*, large, somewhat pentagonal: dorsal scales small, of an 

 irregular form, approaching to square or hexagonal, with a distinct longi- 

 tudinal keel directed somewhat obliquely ; those on the sides of the body 



* In one specimen it was observed to be double, but this is probably accidental. 

 T2 



