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
lings are gradually disappearing within the area of the centres two lateral thirds, the foramina nutritiva still lying on the „slopes" ot them, but quite close to the practically even. nay. in the anterior part rather slightly sunken, median zone of the centre. Posterior to the bilateral swellings here described, the ventral surface of the centre appears sinuate, the sinus resulting in a moderate lateral furrow on either side, submarginally delimiting the ball. The angle described by this sinuation measures about 15". The lateral edges of the ball are fairly projecting, whilst the rest of its ventral margin is so much worn that nothing else than the presence of a very shallow furrow can be established. The dorsal surface of the ball is prettv smooth, nay glossy in many a pari. The injured portions reveal a fine and rather dense texture. The shape of the ball's dorsal surface is practically that of a tetartosphere's. the furrow described as a prominent feature of the centre's sides proves to be yet more sharply marked, i. e. deeper and better delimited, if its dorsal course be followed. It delimits the ball from the rostrad portion of the centre, and acquires its greatest width in the part that faces the neural canal. It constitutes the very precondylar circuit of the centre, and.may be, therelore, designated as sulcus pericondyloideus centri vertebrae (Text fig. 2). That pericondyloideous furrow is very characteristic of the Megalanian vertebrae, being much less marked in Varanians, even if large species — either recent or fossil — be concerned. The greatest width of the furrow measures, in the median line, where it separates the ball's margin from the very prominent, sharp edged, triangular elevation constituting the posterior end of the crista medialis canalis vertebralis (FEJÉRV., 1918), about "5.9 mm. The dorso-lateral part of the centre ascends, immediately anterior to the pericondyloideous furrow, in forming a fairly wide angle which measures about 80", imperceptibly going over into the neural arch. That dorso-lateral surface is plane enough producing, on either side of the centrum, a hardly perceptible swelling, anterior to w 7 hich a very shallow subo\al hollovvness appears on the laterobasal part of the neural arch. A broadly rounded edge, or rather bending, delimits the dorso-lateral surface of the centre from its ventro-laieral one. This bending continues in forward direction, extending upon, and becoming more marked in. the transverse process of the neural arch. The mean angle of the bending measures about 107", what corresponds to the width of the angle enclosed by
