204 ME. a. A. BOULENGEE ON THE 



Hind limb reaching the collar in the male. Frontal shorter than its distance from 

 the end of the snout ; occipital considerably shorter and broader than the interparietal ; 

 masseteric disk small, absent on one side in the male. 34 or 36 caudal scales in the 

 fourth whorl. 



Greyish olive above, with a darker vertebral stripe bearing small black spots ; sides 

 with round light spots in a dark network. 



Measurements (in millimetres):^ 



From end of snout to vent 80 80 



„ „ „ fore limb .... 30 29 



Length of head 20 19 



Width of head 13 11 



Depth of head 10 9 



Fore limb . . . . • 31 26 



Hind limb 49 46 



Foot 28 23 



In conclusion, considering that even the most distinct and striking forms of this 

 polymorphic lizard are linked with the typical Lacerta muralis in such a way as to 

 preclude a precise definition, such as we have a right to claim in dealing with specific 

 entities, I feel bound to adhere to the conception of Lacerta muralis in the wide 

 sense in which I have hitherto taken it. I even feel unable to draw up short 

 definitions or a key by which the identification of the numerous forms with which we 

 are now acquainted could be ensured in a satisfactory manner. 



A geographical arrangement therefore appears to me the best to follow for the 



present * : — 



A. Central and Southern Europe. 



1. f. tijpica, i. pp. 352, 360, 376 ; ii. pp. 137, 142, 147, 161. 



B. Spain and Portugal and N.W. Africa. 



2. V. bocagii Seoane, i. pp. 361, 415 ; ii. p. 141. 



3. V. vaucheri Blgr. i. pp. 365, 418. 



4. V. monticola Blgr. i. p. 365 ; ii. p. 145. 



5. V. liolepis Blgr. i. p. 363. 



6. v. hispanica Stdr. i. p. 368. 



7. V. pityusensis Bosca, i. p. 370. 



8. V. lUfordi Gthr.i. p. 372. 



C. Italy and East Coast of the Adriatic. 



9. V. campestris De Betta, i. pp. 390, 405 ; ii. p. 178. 

 10. V. serpa Eaf. i. p. 394 ; ii. pp. 1^8, 155, 180. 



* This list -will also serve as an index to the contents of this (ii.) and the previous (i.) contribntion iii the 

 Transactions. 



