MANSFIELD DISTRICT, VICTORIA. 
Fig. 4.—Eupleurogmus cresswelli, McCoy; portion of type 
specimen, showing squamation, and also the apex 
of a fin-spine in the left lower corner; nat. size. 
4a.—Seales of middle of flank, showing enlarged scales 
of lateral line; thrice nat. size. 
45.— Other seales of the same; about twice nat. size. 
Puiate VI. 
Fig. 1—Gyracanthides murrayi, sp. nov.; impression — of 
tubercular dermal armour; nat. size. Specimen 
probably intended by McCoy to represent his 
supposed Cephalaspidian, Rhytidaspis murrayi, 
and the figure wrongly indicating an appearance 
of polygonal tesserze; nat. size. 
la.—Diagrammatie sketch of impressions of dermal 
tubercles; thrice nat. size. 
Puate VII. 
Fig. 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. 
1b.—Imperfect anal fin-spine and fin; twice nat. size. 
le, 1d.—Inner aspect of scales; magnified. 
le.—Outer aspect of scales ; magnified. 
Fig. 2.—Strepsodus decipiens, sp. nov.; impression of inner face 
of jugular plate; nat. size. Specimen probably 
intended by McCoy to represent his supposed 
Pteraspidium, Pleraspis ? mansfieldensis. 
Fig. 3.—Ditto; imperfectly preserved jugular plate, incomplete 
at one side and at one end; nat. size. Also probably 
regarded as Pteraspidian by McCoy. 
[29] 
