196 GECKONID^. 



and tail are covered witli granules of subequal size, intermixed with 

 larger scales arranged symmetrically on the back and tail ; the lower 

 surfaces are covered with flat, hexagonal, slightly imbricate scales ; 

 these are largest, and transversely dilated on the lower surface of 

 the tail. I am not able to distinguish the sexes externally. 



Synopsis of the Species. 



I. A supraorbital bone. 



Dorsal tubercles strongly keeled ; anterior 



border of ear not denticulated 1. mauritaniva, p. 196. 



Dorsal tubercles not keeled ; anterior border 

 of ear denticulated ; all the chin-shields 

 in contact with the infralabials 2. annularis, p. 197. 



Dorsal tubercles not keeled ; anterior border 

 of ear not denticulated ; only the inner- 

 most chin-shield in contact with the 

 iufralabials 3. epJiippiata, p. 198. 



II. No supraorbital bone. 



Snout a little longer than the distance 



between the eye and the ear- opening ; 



mental not thrice as long as it is broad in 



the middle 4. delalandii, p. 1 99. 



Snout as long as the distance between the 



eye and the ear-opening ; mental thrice 



as long as it is broad in the middle .... 6. gigas, p. 200. 



1. Tarentola mauritanica. 



Tarentola mauritanica, Gray, Cat. p. 164. 

 Lacerta mauritanica, Linn. S. N. i. p. 202. 

 Geliko muricatus, Lam: Syn. Rept. p. 44. 

 Stellio luauritauicus, Meyer, Syn. Rept. p. 31. 

 Gecko fascicularis, Laud. Rept. iv. p. 144. 

 Gekko stellio, Merr. Tent. p. 43. 



Tarentola stellio, Qi-ay, Ann. Phil. (2) x. 1826, p. 199. 

 Gecko mauritanicus, Risso, Hist. Nat. Mtr. Mer. p. 87. 

 Platydactylus fascicularis, Wagl. Syst. Amph. p. 142. 



(^Tarentola) fascicularis, Oray, in Griff. A. K. ix. Syn. p. 48. 



muralis, Lum. Sf Bihr. iii. p. 319. 



Ascalabotes mam-itanicua, Bonap. Amph. Eur. p. 28, and Faun. Ital. 

 Platydactylus facetanus [Aldrov.), Strauch, Erp. Alff. p. 22 ; Schrdb. 



Reip. Eur. p. 490. 

 mauritanicus, Boettger, Ahh. Senck. Ges. ix. 1874, p. 16. 



A supraorbital bone. Snout longer than the distance between the 

 eye and the ear-opening. Rostral twice as broad as high ; ten 

 upper labials, the last minute ; mental not twice as long as it is 

 broad in the middle, its posterior^ border not quite half as broad as 

 its anterior ; chin-shields two or three on each side, in contact with 



