NON-PULMONARY GASTEROPODS. 
415 
°f Warm countries. M. Australis (Fig. 229) is a native of Austra- 
^ a n seas. M. labia (Fig. 230) is a small brown shell, with white 
spots, which is very common on the shores of the Mediterranean. 
Of the Delphinula only a small number of living species are known. 
They are natives of the Indian Ocean, and remarkable for the nume- 
l ' 011 s spinous asperity of their shell (Fig. 231). 
229 - Monodonta Fig. 230. Monodciita labia Fig. 231. Oelpbinula rijbrrniia (Kieiicr). 
■S-BstraUs (Lamarck). (Lamarck). v ' 
The Turritellidm are numerous, and found in every sea. All these 
8 h e Us, as their name indicates, represent a winding pyramid, ter- 
minating in a sharp point, some of them having fluted spirals, others 
re Wica?' Fig. 233. Turn- Fig. 234. TnrriWIa Fig. 235. Turri- 
^ vUntiasus). tel I a an gu lata sanguinea (Reeve). tella goniostoma. 
(Sowerby). 
Fig. 23 G. Turn- 
tella tercbellata 
(Lamarck). 
Rinded, angular, or flat, and some of them elegantly pencilled. 
'Ss. 232 to 236 represent some of the varied forms they assume. 
