2G8 



SCLERODERMI. 



(t. Type of 0. ornatm : skin, 5 inches long. Tasmania. 



h. Type of 0. flavu/ aster : skin, 5 inches long. Tasmania. 



c-d. Half-grown : skins. Tasmania. 



e. Young. Port Lincoln. From the Collection of the Zoological 



Society. 

 f-h. Half-grown and young : in bad state. 



5. Aracana lenticularis. 



Ostracion lenticularis, Hicliards. Froc. Zuol. Soc. 1841, p. 21, and 



Trans. Zool. Soc. iii. p. 158. 

 Acerana (Anoplocapros) grayi, Kuup, IVifgm. Arch. 185-5, p. 221. 



Carapace nnich compressed, back and abdomen compressed into a 

 crest ; no spines, sometimes the centre of each scute slightly raised. 

 Body uniformly coloured or with blackish spots on its iippcr half. 



South Australia. 



a-h. Twelve inches long. Sydney. From Mr. delft's Collection. 



c. Adult : skin. South Australia. — Type of the species. 



d. Adult : skin. Australia. — Type of A. (jrayi. 

 e-h. Half-grown and young : skins. 



APFEXDIX TO OSTRACIOX. 

 Ostracion hoops. 



Ostracion boops, Richarch. Toy. Ereh. &■ Terr. Fish. p. 52, pi. 30. 



tigs. 18-21. 

 Centaurus boops, Kaup, Wieym. Arch. 1855, p. 221. 







This fish was taken in the South Atlantic by Dr. Hooker, in a 

 tow-net. No specimen was presented. It is c^•idently a young 

 Ostracion. 



