26 MR. EDWARD DEGEX OX THE 



between these two latero-posterior angles of the skull, unite 

 with the processus parotici in such a way that the foramen supi'a- 

 teniporale, conspicuous for its relative large size even in the 

 adults of the pyramiclocephalous forms like Lacerta muralis 

 varieties Jiumana, serpa, canvpestris, piti/usensis, and others, 

 is here nearly closed up as much, for instance, as in L. Icevis. 



The Prces2)henoid, which in so)ne Lacertce is a slender ossifica- 

 tioii of the ethmoidal region in the membranous septihm orhitale, 

 is liere reduced to a small cartilaginous band in which calcifica- 

 tions in the shape of granules are imbedded. 



The Colitinella cranii, for a skull of the inferior dimensions 

 of the present one, ai'e exceptionally thick and strongly bent 

 laterally — particularly so at their parietal ends, where they are 

 rh close contact with the ala sphevoidea. Thus they differ 

 somewhat from the more delicate, either linear or slightly sig- 

 moid thin structures frequently met with in the majority of other 

 Wall-Lizards ; but this condition is the rule in the very young, 

 as already pointed out by Siebenrock *. 



The Quadrata and Ossa transversa both answer to the general 

 form of description for a\\ these Lizards. 



The Vomer plates are closely approximated to each other 

 medially along their entire length, but intimately united only 

 at their anterior ends. The lacuna pterygo-vomerina does not 

 extend beyond the most posterior portion of the palate-bones, 

 which latter also unite with each other along their greater length, 

 producing the crista vomerina which is continued on to the 

 palatines. 



Mandible. — This consists of five elements only, a condition stated 

 by Leydig to be typical of the Lacertoi, and further confirmed also 

 by Siebenrock t in the fully adult Lacerta atlantka, L. muralis 

 var. ruelissellensis, L, ccerulea^ L. oxycepliala^ and L. mosorensisy 

 a condition brought about by the fusion of the supra-angulare 

 with the articulare ; whereas in L. simowji, ocellata, galloti, 

 and viridist, according to Siebenrock, these tw^o bones remaiix 

 separated throughout life. 



The number of teeth in each ramus is 23. 



Description of the Skull of the Female. 



Dimensions. — Length. 15 mm. ; width 9 mm. ; height 4 mm. 



Its width is therefore contained 1-6 times in its length, and its 

 height 3 '3 times. 



General Configuration. — Strongly depressed in the same pro- 

 portions as in the male. 



In textui'e the bones are luther delicate, such as is character- 

 istically the case in all platycephalous species of Lizards so 



* L. c. p. 52. t L. c. p. 53. 



J In the skull of a specimen of this species from Ho/.en, Tyi'ol, tliesp two bones, 

 though fused slightly, show their original longitudinal sutures in their anterior 

 portions. 



