28 MR. EDWARD DEGEX ON THE 



Suprao7'hitals (text-fig. 6, C, p. 23). More regularly trinngulnr 

 than in the male, also slightly more massive. Their thickened and 

 strongly convex lateral margins, scarcely exposed in the male, are 

 here so to a greater extent on both sides {ascertained before 

 accidental displacement of their dermal plates on one side in the 

 later manipulation of the skull), having been covei'ed partially 

 only by the supraciliary. 



Pterygoids. Diverging slightly more than in the male speci- 

 men. Teeth absent. 



Postfrontals. Forming single plates also. Faint traces of an 

 earlier existing sntnre, as recorded to exist in the very young 

 stages of Lacerta dvgesii, ocellaia^ and muralis by Siebenrock*, 

 are discei'nible anteriorly only. In their posterior portions 

 (postorbital margins) their fusion is complete. 



A minutely developed Retrociliary present. 



Dermal ossifications of Temporal region. I have been unable 

 to find a,ny. 



Dentition. Number of teeth in nrjemaxillaxy 9, in each maxillary 

 15-16. 



Nasal apertures (text-fig. 6, E). These are slightly narrower 

 than in the male, and therefore longer in proportion. 



Parietal Region. — Except for its morphogenetically inferior 

 development of the posterior margin, which is a common feature 

 of all the young, this does not deviate in any essential from the 

 usual conditions. Its relation to the supraoccipital alone requires 

 some explanation (see p. 29), which latter bone is, owing to the 

 development stage, wholly exposed and not yet bridged over as 

 it is m the male. 



The Foramen parietale is absent, as in the male. 



Frontal. — The median suture is discernible in its greater 

 length, which is quite in accordance with the remarks alieady 

 made on this subject. The width of the frontal at its narrowest 

 point (between the margines orbitaJes) is equal to that of supra- 

 oculai-y 3. The frontal is actually and I'elatively narrower than 

 that of the male, its width being slightly less than half the 

 length, and a seventh of the total length of the skull, whilst in 

 the male the similar measurement shows that the frontal is 

 relatively larger. The width of tlie female frontal is three- 

 fourths of the length of the columella cranii, and in this measure- 

 ment, as well as when it is compared with the width between 

 the internal laminse horizontales (taken diagonally across tlie 

 choange), the relative and actual inferiority of size as compared 

 with the male is shown. 



Praemaxillary (text-fig. 6, E). — The nasal process of this bone 

 is on the whole longer and narrower than in the male. It alFo 

 terminates posteriori}^ in a much more finely drawn-out point. 

 It is quite devoid of any calcareous incrustation. Anteriorly it 

 rises from the maxillary portion of the bone at a similar acute 



* i. c. p. 75. 



