1881.] LACERTA AND ACANTHODACTYLTJS. 743 



Synopsis of the Species of the genus Lacerta. 



I. A single Large plate on the anal region. 



1. Lower eyelid opaque. 



- A. Collar distinctly toothed. 



a. Four anterior upper labials ; a single 



postnasal. 



Dorsal scales hexagonal elongate, rather 

 large, two series corresponding to a 

 ventral plate 1. vivipara, Jacq. 



Dorsal scales granular, small, three series 



corresponding to a ventral plate 2. taurica, V&W.. 



b. Four anterior upper labials ; two post- 



nasals. 



Postnasals not regularly superposed 3. stirpium, Daud. 



Postnasals regularly superposed ; occipital 



moderate ; dorsal scales hexagonal 



elongate, keeled.. 4. viridis, Jj. 



Postnasals regularly superposed ; occipital 



large ; dorsal scales oval, keeled 5. schreihcri, Bedr. 



Postnasals regidarly superposed ; occipital 



large; dorsal scales granular 6. ocellata,'Da,\xA. 



B. Collar even. 



a. Five anterior upper labials ; two post- 



nasals. 

 Dorsal scales perfectly smooth ; masseteric 



disk none ; a single row of small 



plates sm-rounding the anal 7. punctata, Gray. 



Dorsal scales perfectly smooth ; masseteric 



disk very small ; 8-10 longitudinal 



rows of ventral plates 8. imMtZi!?, De Fil. 



Dorsal scales perfectly smooth ; masseteric 



disk none or very small ; 6-8 longi- 

 tudinal rows of ventral plates 9. danfordi, Gthr. 



Dorsal scales keeled ; masseteric disk 



large 10. tews, Gray. 



b. Four anterior upper labials ; a single 



postnasal 11. muralis, Laur. 



c. Five anterior upper labials ; a single post- 



nasal . 



Ventral plates in 6 longitudinal series ... 12. oxi/cep/tala, Fitz. 



Ventral plates in 12-14 longitudinal series 13. galloti, D. & B. 



2. Lower eyelid transparent 14. pcrspicillata, D. & B. 



II. Two or more large plates on the anal region ; 



occipital very small. 

 Two postnasals; 8 longitudinal series of ventral 



plates 15. delalaiidii, M.-Edw. 



Two postnasals ; 6 longitudinal series of ventral 



plates 16. tcssellata, Smith. 



A single postnasal ; 6 longitudinal series of 



ventral plates 17. taniolata, Smith. 



Out of these 17 species, 3 are unrepresented in the British Museum, 

 viz. L. schreiberi, L. oxijcephala, and L. brandti. 



II. Genus Acanthodactylus, Fitz. 



AcANTHODACTYLus BELLii, Gray, Cat. p. 36. 



As has been supposed by Strauch, Schreiber, and myseltj this 

 forra is the young of A. vulgaris. 



