MANSFIELD DISTRICT, VICTORIA. 
Eig. 4 . — Eupleurogmus cresswelli, McCoy ; portion of type 
specimen, showing squamation, and also the apex 
of a fin-spine in the left loiver corner; nat. size. 
la . — Scales of middle of flank, showing enlarged scales 
of lateral line ; thrice nat. size. 
4/;. — Other scales of the same; about twice nat. size. 
Plate YI. 
Eig. 1. — Gyracanthides murrayi, sp. nov.; impression of 
tubercular dermal armour; nat. size. Specimen 
probably intended by McCoy to represent his 
supposed C eph alaspidian, Bhytidaspis murrayi, 
and the figure wrongly indicating an appearance 
of polygonal tesserae ; nat. size. 
la. — Diagrammatic sketch of impressions of dermal 
tubercles ; thrice nat. size. 
Plate YII. 
Eig. 1 . — Acanthodes australis, sp. nov.; caudal region of type- 
specimen, showing parts of dorsal, anal, and caudal 
fins ; nat. size. 
la. — Upper lobe of caudal fin ; twice nat. size. 
lb. — Imperfect anal fin-spine and fin; twdce nat. size. 
1 c, Id. — Inner aspect of scales; magnified. 
le. — Outer aspect of scales ; magnified. 
Eig. 2 . — Strepsodus decipiens, sp. nov. ; impression of inner face 
of jugular plate; nat. size. Specimen probably 
intended by McCoy to represent his supposed 
Pteraspidium, Pteraspis ? mansjieldensis. 
Pig. 3 . — Ditto ; imperfectly preserved jugular plate, incomplete 
at one side and at one end; nat. size. Also probably 
regarded as Pteraspidian by McCoy. 
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