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THE OCEAN WORLD. 



rust-coloured, marked by square brown spots. Turbo argyrostomus, 

 the Silver-mouthed Turbo (Fig. 225), is still larger, with protecting 

 spines on the top of its larger spiral. Turbo marmoratus (Linnaeus), 



Fig. 224. — Turbo margaritaceus 

 (Linnaeus). 



l-'ig. 225. — Turbo argyrostomus (Linnaeus). 



Fig. 226. — Turbo marmoratus (Linnaeus). 



Fig. 227. — Turbo undulatus (Chemnitz). 



the Marbled Turbo (Fig 226), is the largest shell in the group. It is 

 marbled green, white, and brown, outside, and superbly nacred within. 

 The Gold-mouthed Turbo is so named from its nacre being of a rich 

 golden yellow. The Wavy Turbo {T. undulatus^ Fig. 227), commonly 



