Jávorka Sándor - Soós Lajos (szerk.): A Magyar Természettudományi Múzeum évkönyve 29. (Budapest 1935)

Fejérváry, G. J.: Further contributions to a monograph of the Megalanidae and fossil Varanidae - with notes on recent Varanians

looses in breadth while proceeding from above to below, thus assuming an acicular form. This medial line does not appear to have formed a sharp crest, but, on the contrary, it seems to have been of a rather rounded relief. It separates the facies rhomboideae from one another. The front edge, which appears to be throughout of subequal thickness, but slightly incrassating towards the upper end of the process, gradually looses itself into the pre-median part of the neural arch, where it is marked by a faint and narrow line only, again rising then in rostrad direction, suddenly thickening, and meeting, after having thus followed its course for the distance of about 11.3 mm, the much swollen torus formed by the pars tectiformis arcus vertebrae (F.-LGH., 1925); no pre-spinose spine. Pars tectiformis arcüs vertebrae forming an actual torus: it is posteriorly delimited by a much deepened impression, especially hollowed out at both sides of the foremost bit of crest representing the very anterior recess of the proc. spinosus and referred to at the end of the precedent paragraph. Basal width of pars tectiformis, measured between the medio-basal ends of the proc. obi. ant., 37.9 mm. Two small tubercles, each 6.5 mm distant from the foremost crest of the proc. spinosus, and situated at both sides of the latter, are representing, together with the torus-like pars tectiformis, the primordials of a zygosphene which, in the case of Megalania, proves, thus, an orimentary formation evidently arrested in its phylogenetical development. The zygosphene of Megalania is, therefore, epacmically epistatic. — Corresponding to that primitive zygosphene, there is, on the mediano-caudal surface of the neural arch, just above the vault of the spinal canal, at both its ends, a vertically oval impression that represents the very primordials of a paired zygantrum which were contiguous to the two zygosphenal tubercles of the following vertebra. — Two further impressions, somewhat smaller than the precedent ones which are subequal and measure about 9.5 mm in vertical direction and 6 or so in transversal, are present at both sides of the very basal part of the linea medialis; each of them is separated from the adjacent zygantra! impression by a well marked, though feebly prominent, ridge. The dorsaf surface of the neural arch is rough because of the convergent structure lines and pits arranged into series running towards the spinous process. The sculpture thus formed is most conspicuous, because most carved out, in the recess delimited by the