AcantJiodactylus. 83 



Lacerta aspera, Aud. op. cit. p. 174, pi. i, fi^. 10. 



Acantliodactylus hoslciamis, Wieti^m. Herp. Mex. p. 10 (1834) ; Dum. 

 & Bibr. Erp. Gen. v, p. 278 (1839) ; Gray, Cat. Liz. p. 38 (1845) ; 

 Strauch, Erp. Alg. p. 38 (1862) ; Bouleng. Bull. Soc. Zool. France, 

 1878, p. 182, and Proc. Zool. Soc. 1881, p. 744, pi. Ixiii, fig. 2 ; Eimer, 

 Arch. f. Nat. 1881, pi. xv, fig. 26 ; Lataste, Ann. Mus. Genova (2) ii, 

 1885, p. 496; Pareuti & Picaglia, Atti Soc. Modeua (3) v, 1886, 

 p. 29; Bouleng. Cat. Liz. iii, p. 59 (1887), and Tr. Zool. Soc. xiii, 

 1891, p. 129 ; Anders. Proc. Zool. Soc. 1892, p. 14, Herp. Arab. p. 34 

 (1896), and Zool. Egypt, Eept. p. 148, pi. xx (1898) ; Doumergue, 

 Erp. Orau. p. 148, pi. x, figs. 1-3 (1901) ; Werner, Zool. Jahrb., Syst. 

 xxvii, 1909, p. 604; Bouleng. Bull. Soc. Zool. France, 1918, p. 148. 



Scapteira inequalis, Gray, Ann. N. H. i, 1838, p. 280. 



Acantliodactylus asperus, Bonap. Icon. Faun. Ital., Amf. (1841). 



Acanthodadyhis bosJiianus, \a,Y. asper, Lataste, I.e.; Bouleng. Bull. 

 Soc. Zool. France, 1918, p. 153. 



Lacerta longicauda, Hempr. & Ehrenb. Symb. Phys., Zool., Amph. 

 pi. ii, fig. 5 (1899). 



Acanthodactyhis bosJcianus, var. etiphraticus, Bouleng. Ann. & Mag. 

 K H. (9) iii, 1919, p. 550. 



The following description is taken from the smaller-scaled form, 

 with the subocular excluded from the oral border, the range of 

 which appears to be restricted to the Mediterranean coast of Egypt, 

 and which agrees with Daudin's L. hoskiana, as first pointed out by 

 Lataste on examination of the type specimen preserved in the Paris 

 Museum. The larger-scaled form, var. asper, which has a wide 

 distribution, grades into it so completely as to cause difficulties in the 

 naming of certain isolated specimens.* 



Habit rather slender ,t body moderately depressed. Head \\, or a 

 little less, to If times as long as broad, its length 3| to 4|^ times in 

 length to vent, its depth equal to the distance between the anterior 

 corner or the centre of the eye and the tympanum ; a lanceolate 

 concavity from the frontonasal to the middle of the frontal, bordered 

 by a usually rather strong but obtuse keel ; snout more or less 



* Doumergue mentions one from Geryville, in the Province of Oran, which 

 lie refers to the typical form, but which is probably only an annectant examj^le 

 of the var. asper, with an exceptionally high number of scales (38 or 40 across 

 the middle of the body). 



t Except in one male from Alexandria, which is as stout as a typical 

 A. partialis. This aberrant specimen is also remarkable in having a shorter 

 pectination on the outer side of the fourth toe, resembling some specimens of 

 A. pardalis. 



