UNIVALVE MOLLUSCA. 435 
known as the Australian Serpent’s Skin. The shell is white, orna- 
mented with longitudinal waving flexible lines of spots of green, or 
greenisb-violet. Turbo imperialis (Fig. 228), from the Chinese seas, 
is green without, and brilliantly nacred within; it is commonly known 
as the paroquet shell. 
The genus Zuréo is found in the North seas, in the Channel, and 
on the Atlantic coast. The animal is eaten in nearly all the seaports 
of the Channel. 
Rotella Zealandica, from the Indian Ocean, whose shell, represented 
Fig. 228.—Turbo imperialis (Gmel.). Fig. 230.—Monodonta australis 
(Lamarck). 
in Fig. 229, presents the most lively colours, forms one of a genus 
by no means numerous in species. This New Zealand species has 
the spiral turns of its shell sculptured in descending furrows, and 
studded with imbricated scales, which form a projecting edging 
round its margin, and give it a radiating form. THis species is 
of a violet brown above and white below. : 
Near to the genera Zyochus and Turbo in this system comes the 
genus Afonodonta. ; 
The Aonodonta are elegantly-marked shells, belonging to the seas 
of warm countries. JZ Awstralis (Fig. 230) is a native of the 
Australian seas. JAZ /abia (Fig. 231) is a small brown shell, with 
cca 
