Victor i<i/ii Fossils, Port VII. 99 



toriaa Lower Palaeozoic fauna, it is impossible, however, to draw 

 any close comparisons between similar faunas elsewhere ; but 

 when this lack of knowledge is supplied, the deductions to be 

 drawn from the data thus afforded, promise, undoubtedly, to be 

 full of interest and value to the stratigraphist. 



Associated Fossils at Wondmt Creek. — Determinations of a 

 series of fossils from Wombat Creek have already been made by 

 Mr. R. Etheridge, junr., who recorded the following forms' : — ■ 



Petraia, sp.; Cystiphyllum (probaldy); a Cyathophylloid 

 coral; Favosites ; Pleurodictyum ; Alveolites; Heliolites ; 

 Plasmopora sp. nov. ; (?) Lingula ; Leptaena ; 8trophomena ; 

 Orthis ; (?) Pentamerus ; Rhynchonella decemplicata ; Atrypa 

 reticularis ; Cromus murchisoni, de Kon. ; Phacops. 



From the material collected at Wombat Creek, sent to 

 Prof. McCoy, at the National Museum, I have myself made the 

 following determinations of Yeringian fossils : — Receptaculites 

 fergusoni, Chapm. ; Am[)lexus sp. ; Favosites sp. nov. ; 

 Encrinuius punctatus, Briinnich, sp. ; E. murchi.soni, de Kon. sp.; 

 Rhombopora sp. nov.; Chonetes cresswelli, Chapm.; C. striatella, 

 Dalman sp. ; (?) Stropheodonta sp. ; Orthis testudinaria, 

 Dalman; Atrypa reticularis, Linn, sp.; Atrypina imbricata, 

 Sow. sp. ; Spirifer plicatellus, Linn, sp.; (?) Spirifer sulcatus, 

 Hisinger sp.; Cy|)haspis sp. nov.; Thyestes magnificus, sp. nov. 



EXPLANATION OF PLATES. 



Plate VII. 



Thyestes magnificus, sp. nov. 



Part of Head-Shield and Dorso-lateral scales. Surface of fossil 

 somewhat decorticated. In Silurian (Yeringian) mudstone, 

 Wombat Creek, N.E. Gippsland. Natural size. 



Plate VIII. 



Fig. 1. — Restoration (diagrammatic) of Thyestes magnificus, 

 sp. nov. Explanation of lettering : — a.r. : antor- 



1 Prog. Rep., vol. x., 1899, pp. 100, 101. 



