. Transactions and proceedings of the New Zealand Institute . ese impressions being separatedby a smooth groove with only a faint mesial ridge. There appears to have beena deep notch (df) in the upper part of the orbital border, but the lachrymal boneshaving been lost this is not very clear. The width of the nasal suture {Fn)is equal to the length of that for the attachment of the lachrymals {Fl), whichextends from the glandular groove to the transverse suture. The inter-orbital septum is complete, and there are well-ossified rhinal chambers {Eh).The roof of the orbit is flat, and with a very
. Transactions and proceedings of the New Zealand Institute . ese impressions being separatedby a smooth groove with only a faint mesial ridge. There appears to have beena deep notch (df) in the upper part of the orbital border, but the lachrymal boneshaving been lost this is not very clear. The width of the nasal suture {Fn)is equal to the length of that for the attachment of the lachrymals {Fl), whichextends from the glandular groove to the transverse suture. The inter-orbital septum is complete, and there are well-ossified rhinal chambers {Eh).The roof of the orbit is flat, and with a very slight granular groove. Theoptic foramen is at the posterior and inner angle of the orbit, directly abovethe front of the basi-pterygoid facet. Behind the post-orbital process is a deepimperforate pit. The brain cavity extends for 6 lines anterior to the opticforamen. The upper mandible has all its elements completely fused; thelarge nostrils {e) occupy more than half of the superior sloping area, their* I have since found it, but less marked, in Cereopsi^.. Hectob.—On Cnemiomis. 79 aperture being directed outwards, forwards, and upwards, rounded in front and angled behind, and tliey are separated by a smooth bony interspace (f) which is one-fourth the width of the mandible. The tip is rounded, with a tumid area for the attachment of the horny mandible, the length of which is equal to the width. Interiorly the palatal plate is flat, with deeply-incurved borders, notched on each side of the tip, and deeply excavated by a longitudinal groove (7i), which is perforated by two well-defined apertures, the one (Ji) large and directed upwards, the other (Ji) small, directed backward in a line with the groove. The palatines are firmly united with the vomer, the upper surface of which has a slight groove to receive the pre-sphenoid. The lower mandible is stout, but broad and compressed in every part, the rami preserving a lamellate structure throughout, and being united by a broad symp
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