14 DR. J. ANDERSON ON MAMMALS, REPTILES, [Jan. 5, 



of the body, the highest number mentioned by Boulenger being 56 ; 

 and in the smaller of the two specimens there are six upper labials 

 before the subocular on one side and seven on the other, the usual 

 number of these shields being five. 



Genus Psammodromus, Pitzinger. 



10. Psammodromus algirus, Linnaeus; Boulenger, loc. cit. 

 p. 128. 



1 $ , Tlemgen, Province of Oran. 



Genus x^canthodactylus, Wiegmann. 



11. AcANTHODACTYLus BOSKiANus, Daudin ; Bouleuger, /oc. aY. 

 p. 129. 



1 c?, Biskra; 1 d & 1 ?, Tuggurt ; 1 c? & 3 $ , Duirat, 

 Tunisia. 



The ventral plates in these specimens do not exceed 10, and the 

 highest number of large keeled scales between the hind limbs is 1 1 ; 

 but this occurs only in one specimen, all the others having 10 

 longitudinal rows. 



Five of the seven specimens have 23 femoral pores on each side, 

 one 19, and the other 24. The longitudinal series of scales round 

 the middle of the body vary from 30 to 36, the lowest number 

 occurring in a specimen from Duirat. 



12. Acanthodactylus sc utellatus, Audouin ; Boulenger, 

 loc. cit. p. 130. 



1 c? & 4 $ , Tuggurt ; 3 c? & 2 $ , Duirat, Tunisia. 



These specimens are all distinguished by acute snouts, denticulated 

 ears, and by the dorsal and ventral scales merging the one into the 

 other, these scales conjointly varying from 60 to 70 (Mr. Boulenger 

 gives 61-74); the scales referable to the ventral region vary from 

 12 to 14, the latter number being dependent on the degree of 

 development of the outermost series of scales, but in Mr. Boulenger's 

 specimens the number rose to 18. The lowest number of femoral 

 pores, 18, occurs in a female specimen from Tuggurt, whereas the 

 highest number 26, is found in a male from Duirat, the range of 

 femoral pores recorded by Mr. Boulenger being from 18 to 25. 



The three males from Duirat are reddish, with numerous black 

 spots and indications of white ocelli on the sides, whereas the 

 females from the same locality are uniformly reddish, with the white 

 ocelli feebly visible, and the black sfjots only faintly traceable here 

 and there. The Tuggurt specimens are olive-grey. In the male 

 from this locahty the black spots are more distinctly marked than 

 in the iemales. 



13. Acanthodactylus pardalis, Lichtenstein ; Boulenger, 

 Loc. cit. p. 131. 



3 S, Aures Mountains, north of Biskra; 7 J & 8 $, route 

 between Biskra and Tuggurt ; 3 J & 7 $ , Duirat, Tunisia. 



