GASTEROPODA. 



81 



The animal is literal in its habits, and is feund in sand 

 in the South Seas : its shell is very beautifully sculptured, 

 and the inner lip curiously covered with raised spots; 

 O. Dennisoni has this part of a scarlet hue, with raised 

 white spots. 



Dolium. Lam. — Shell large, light, and globular ; 

 aperture wide, and notched at the lower 

 part ; generally transversely banded or ribbed, 

 the right lip in consequence waved ; no 

 operculum. Animal, head large, having a 

 large thick proboscis, which can be length- 

 ened, and two tentacula with eyes in the 

 middle; foot large, very thick, muscular, 

 and capable, it is "affirmed, of being dilated Dolium galea _ 

 with water to an enormous extent. — 15 

 species * ; also fossil. 



These shells are found, for the most part, in the seas of 

 the Indies, Africa, and South America : one species, how- 

 ever, the Dolium galea, is met with in the Mediterranean. 

 They are often found on reefs, and sometimes attain a 

 very large size, specimens having been seen as large as a 

 man's head ; even then, however, they retain the fragility 

 and thinness of texture which characterise most of the 

 species. The animals are often quite bright with colours 

 of various shades, striped with blue, and having even hues 

 of a copper green ; they are said to be inactive, and very 

 voracious. Philippi includes as sub-genera Perdix Montf. 

 and Malea Valenciennes. 



Ebukna. Lam. — Shell oval, smooth; spire pointed, 

 with the sutures more or less deeply channelled ; aperture 

 oblong, and deeply notched ; left lip much thickened, 



* Reeve's Iconica. 



G 



