476 CARBOMFEtlOtS TKILOfilTES OF AOsTRALtA, 



thorax, its lateral extensions narrow but prominent. Axial 

 grooves faint Fixed cheeks very small and high; palpebral lobe 

 high, narrow, convex, and very faintly separated from the basal 

 lobe. Free cheeks iiigh, sharply rising from the narrow lateral 

 furrows, lateral border narrow, thickened and raised. Eyes 

 reniform, short fore and aft, high and prominent, separated from 

 the upper and flattened part of the cheeks by a faint sulcus, ap- 

 parently faceted. Facial sutures anteriorly follow the course of 

 the axial grooves, posteriorly oblique passing out in a line with 

 the fulcra of the thoracic pleurae. Limb narrow and pressed 

 to the front of the glabella. Genal angles bear very short spines. 



Thorax fairly convex, finely granulated, rectangular, length 

 practically two-thirds of greatest width, anterior and posterior 

 widths approximately equal, somites nine. Axis prominent, 

 widely and evenly arched transversely, width or spread through- 

 out about equal, the last two rings only being slightly contracted, 

 a little wider than one side-lobe, centrally the rings have a gentle 

 forward arch, and bear a row of inconspicuous granules, bases 

 non-tuberculate: axial furrows shallow. Side-lobes sloping very 

 gently from the axial furrows to the fulcra and thence fairly 

 steeply, median furrows of each segment narrow and shallow, 

 but reaching just to the margin, ends faceted. 



Fygidiiun sub-semicircular, evenly and very convex, finely 

 granulate, length equal to length of thorax, and to about three- 

 fourths of its own greatest width (9:13): axis convex, bearing 

 eleven annulations, diminishing posterioily very gradually in 

 width and prominence, ending bluntly and rounded a little short 

 of the border. Its length equals seven-ninths of the pygidial 

 length, annulations faint, especially towards the distal end. 

 Side-lobes strongly convex, anteriorly having a spread approxi- 

 mately equal to that of the axis, possessing eiglit ribs, only the 

 first three pairs being at all conspicuous: all, except the first 

 pair, stop at the faint furrow separating them from the wide, 

 convex, smooth border. 



Obs. —The individual, whicli served for the above description, 

 measured 25 mm., of which the cephalon was 7 nnn., the thorax 

 and pygidium 9 mm. each; width of thorax 14 mm. The speci- 



