186 ME. G. A. BOULENGBE ON THE 



the species was established. I am therefore surprised to find my L. muralis, 

 var. portschinsJcn, and my L. m. var. rudis, referred to by Mehely in his synonymies as 

 L. muralis, var. depressa, as well as to miss all allusion to my identification of i. defilippii, 

 Avhich should have been quoted as L. muralis, var. defilippii. 



Remarks will be made further on concerning the names given by Mehely to the 

 varieties here dealt with. L. derjugini Nikolsky and L. chlorogaster Boulenger (which 

 name has priority over L. hoettgeri Mehely) appear to me to be entitled to rank as 

 species distinct from L. muralis. 



The forms dealt with here may be briefly defined as follows : — 



A. Var. chalybdea Eichw. Hind limb sliort, reaching the elbow or the axil in the male, not 



beyond the elbow in tlie female; foot not or but slightly longer than head. Granules 

 between the supraoculars and the supraciliaries usually forming an incomplete series, some- 

 times reduced to 3. Dorsal scales smooth, larger than tibials, 40 to 53 across middle of 

 body. Femoral pores usually fewer than 20. 34' to 28 scales under the fourth toe. From 

 snout to vent up to 75 mm. Transcaucasia, Asia Minor, Mesopotamia. 



B. Var. saxicola Eversm. Hind limb longer, foot longer than head. Granules between supra- 



oculars and supraciliaries forming a complete series. Dorsal scales smooth, not larger than 

 tibials, 50 to 65 across middle of body. Femoral pores 16 to 22. 25 to 31 scales under the 

 fourth toe. From snout to vent up to 80 mm. Crimea, Cis- and Transcaucasia, Asia 

 Minor. 



C. \ax. ports chinskii Kessl. Like the preceding, but smaller and more slender, with more pointed 



snout. Dorsal scales smooth, as large as or larger than tibials, 51 to 56 across middle of 

 body. 26 to 31 gular scales. Femoral pores 16 to 21. Not known to exceed 57 mm. 

 from snout to vent. Transcaucasia. 



D. Var. defilippii Gamer. Proportions more as in the preceding. Dorsal scales smooth, as large 



as or larger than tibials, 46 to 53 across middle of body. Caudal scales usually feebly keeled. 

 22 to 25 gular scales. Femoral pores 14 to 20. Size as in the preceding. Transcaucasia 

 and Northern Persia. 



E. Var. rudis Bedr. Dorsal scales more or less distinctly keeled, 45 to 58 across middle of body ; 



tibial scales much larger, strongly keeled; caudal scales almost spinose on the sides. 25 to 

 34 gular scales. Femoral pores 15 to 23. From snout to vent up to 87 mm. Trans- 

 caucasia. 

 These varieties completely merge into one another, and the definitions are necessarily some- 

 what vague and unsatisfactory. They might all be thrown together under the name of 

 L. chalybdea, which has priority over that of saxicola adopted by Mehely. Although 

 L. chalybdea, in this extended sense, might be regarded as sufficiently distinguished from 

 the forms of L. muralis inhabiting South Eastern Europe to justify its recognition as a 

 species, we must not lose sight of the state of things in South Western-Europe, where the 

 var. bocagii completely connects the typical L. muralis with a mountain form, var. monticola, 

 which in all its characters closely approaches L. chalybdea. 

 A fifth variety may be said to connect the var. breviceps with L. derjugini : — 

 F. Var. caucasica Mehely. Head not strongly depressed. Collar-edge more or less distinctly 

 serrated. Dorsal scales smooth or faintly keeled, larger than tibials, about 40 to 50 across 



