UNIVALVES. 119 
inhabits the East Indies and the Bay of Naples. <A 
transverse row of nodulous belts gracefully diversifies 
the surface of a shell, to the delicacy of whose 
tinting the beautiful description of the poet of the 
*‘ Seasons” is applicable, with a slight alteration : 
“* Nor” softer ‘‘ verdure dyes the robe of Spring, 
When first she gives it to the southern gale,”’ 
Than the Vernalis shews. 
Between the nodulous belts the sutures are marked 
by an elevation resembling a pearl necklace. 
The solid, ponderous, and iridescent coloured 
shells of the genus TJ'urbo, which has the same signi- 
fication with the Greek derivative of the preceding 
genus, are many of them extremely beautiful; 
especially the 7. chrysostomus, T’. vitreus, T. scalaris, 
or Golden-mouthed, Glassy, and Wentle-trap Tur- 
bines. The first inhabits the Asiatic Ocean, Red 
Sea, coasts of Amboyna, the Moluccas, and Friendly 
Islands. The shell is about two inches and a 
quarter long, of a yellowish white, tinged with 
green, and marbled with chestnut brown; the inside 
is of arich gold colour. The second is white, and 
smooth, and so beautifully pellucid, as to render the 
columella visible through the shell. The Shell 
Collector has frequently met with them on the 
Cornish coast. The third is a rare and elegant 
