Fossil varanídaé and megalanidaë. 
465 
off. The determination of the geological period, in which this Gigantic 
Land Lizard of Australia is believed to have existed, seems to be somewhat 
incongruent, owing to the very diverging type of the rest of the Reptilian 
Fauna in the Pleistocene. Nevertheless if this determination would really 
prove exact, and if the locality where the remains of Megalania were 
found among Pleistocene deposits is not a secondary one, Megalania ought 
to be considered as a Relict-Form, 1 ex'i-nct only in the Quarterly period. 
❖ 
* ❖ 
EXPLANATION OF THE PLATES. 
(All photographs about twice the natural size. Nor exact measurements 
see respective parts in text.) 
Plate I. 
Fig. 1. f Varanus cf.? cayluxi Filh. (Fejérv. 1918) ; upper view of 
epistropheus. — La Grive-St.-Alban (Isère). 
Fig. 2. Id. ; lower view of same vertebra. 
Fig. 8. Id. ; right profile of same vertebra. 
pod = surface of broken proc. odontoideus. 
rst = ridge leading to broken spina transversa. 
t = surface of attachement of talon for broken hypapophysis. 
Fig. 4. Id. ; anterior view of same vertebra. 
Fig. 5. Id. ; posterior view of same vertebra. 
Fig. 6. I Varanus marathonensis Weith. ; upper view of about fifth 
cervical vertebra. — Csarnóta (Lower Quarry). 
Fig. 7. Id. ; lower view of same vertebra. 
im = margo inferior ; 
ih = talon for hypapophysis ; 
ah = surface of attachement for broken hypapophysis; 
c — ball (condyle). 
Fig. 8. Id. ; left profile of same vertebra. 
1 poa = proc. obliquus anterior (broken) ; 
av = arcus vertebrae (anterior part) ; 
ps = proc. spinosus; 
pop = proc. obi. posterior; 
c = ball ; 
th = talon for (loosened) hypapohysis; 
Sa = surface of attachement for hypapophysis; 
mi — margo inferior; 
pi = proc. transversus (diapophysis). 
Fig. 9. Varanus griseus Daud. ; left profile of fifth cervical vertebra, — 
Egypt (?). (Mus. Hung. Rept. Nr 2584.) 
1 My friend, Baron Nopcsa, with whom I talked on this matter, suggested 
me this latter, very plausible supposition. 
Annales Musei Nationalis Hungarici. XVI. 
30 
