856 TR1L0BITES FROM N.S.W. 



EXPLANATION OF PLATE XLVII. 



Ceratocephala phalaenocephala Mitchell. 

 Fig. 1. —Photo of a perfect headsfield. Coll.Mitchell. 



Figs. 2 & 3. — The same more or less restored. 



Odontopleura {Acidaspis) hartleii Mitchell. 

 Fig. 4. — Photo of a headshield from a badly preserved specimen. 



Coll.Mitchell. 

 Fig. 5. — The same with the features restored. 



Figs. 6 & 7. — Photos of a pygidial fragment ; 7 being restored in part. 



Coll.Mitchell. 

 Fig. 8. — Photo of a free cheek partially restored. 



Cyphaspis filmeri Mitchell. 

 Figs. 9 & 10. — Photo of a fragmentary headshield in which the medial 



portion is preserved. 

 Fig. 11. — The same with the features restored. 



These figures show how closely the glabella and its limbs 



resemble a cheese cutter peaked cap. 



Trinucleus clarkei Mitchell. 

 Figs. 12 & 13. — Photos of a nearly complete pygidium. Coll.Mitchell. 

 Fig. 14. — The same more or less restored. 



