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

remark that the foveae paraglenoideae are, in Megalania, displaced, for they are situated on the anterior surface of the vertebrae, i. e. they lie on a subvertical plane instead of being ventral in position — eontrarily to other Lacertilians. Varanus, e. g., in which the paraglenoidal foveae are, as a rule, of ventral position. This fact obviously demonstrates that surface location had undergone considerable change in Megalanian vertebrae: The very ventral surface of the vertebra reached, in this form, a state of visible reduction, for both the latero-ventral and antero-ventral parts got raised, such shifting in upward direction, or dorsad surface dislocation, resulting in the increase of the anterior (rostrad), the lateral and sublateral bulk of the vertebrae. It is clear that the cause of such change could hardly be other than mechanical, though the kinematic factors responsible for it are, as yet. not yet brought to light. —The lateral surface of the proc. obi. ant. is suboblong, visibly convex in the part just above the facies costalis, and vertical on the whole. The top part, superior to the convexity mentioned, shows a supine inclination. Yentrad the proc. obi. ant. are gradually going over into the proc. transversi which are bearing the facies costales, and also caudad no sharp delimitation is to be found: the lateral surface of the proc. obi. ant. is bending in medial direction and merges into the simiation termed incisura lateralis arcus vertebrae (F.-LGH., 1925). Processus transversi not sharply marked, hardly standing out against the adjacent surfaces, and follow ing an antero-lateral direction. Facies costales moderately prominent: upper border 24.6 mm distant from the supero-lateral edge of the proc. obi. ant. (vertically measured on right side) ; subsemilunar, with, the convexity turned caudad, upper and lower outlines arcuate, moderately broad; greatest width reached in middle region, which constitutes the most prominent part of these surfaces, and measuring 8 mm; this prominent part represents the rest of the broken off tuberculum II. (or mediale) faciei costalis proc. tranversi (F.-LGH., 1923). Otherwise the tubercula fac. cost. proc. transv. are not discernible any more: no fovea pro insertione ligamento tuberculi medialis capitis costae (F.LGH., 1923 emend. FEJÉRV., nunc). A rounded edge is running from the lower (ventral) part of the tub. II. fac. cost. — the latter being the most prominent point of the lateral surfaces — obliquely downward to the very lateral part of the sulcus pericondyloideus, gradually vanishing caudad and loosing itself in the anterior limit of the furrow just mentioned. Superior to that edge marking the posteroAnnales Musei Nafionalis Hungarici XXIX. 3