24 



Syn. Turbo taeniatus, Sowerby in Tank. Cat, App. p. xiii. 

 Hab. ad oras Americse meridionalis. 



2. Margarita violacea. Testa orbicuiari-subconica, tenui, Isevi, rufes- 



cente ; anfractibus quatuor, tumidis ; sutura subobsoleta ; aper- 

 tura fere orbiculari, infra subangulata ; columella subincrassata, 

 subarcuata, sulco longitudinali instructa ; long. 0*4. lat. 0'45. 

 poll. Conch. Illustr. Marg. f. 11, 12. 

 Syn. Margarita violacea, King Zool. Journ. vol. t. p. 346. 

 Hab. ad fretum Magellanicum (Port Famine.) 

 Obs. Of this shell the Indians make their necklaces ; it is found ad- 

 hering to the leaves of Fucus giganteus, and is the principal 

 food of the racehorse duck (Capt. King). This shell is usually 

 of a dull reddish colour (not violaceous), but sometimes it is of a 

 pale dull yellov^rish brown. 



3. Margarita expansa. Testa orbiculari, lata, tenui, Igevi, rufescente, 



anfractibus quatuor subrotuudatis, levatiusculis, ultimo maximo ; 



suturis subinconspicuis ; apertura orbiculari ; columella latius- 



cula, arcuata, sulco longitudinali instructa ; long. 0'5. lat. 0*55, 



poll. Conch. Illustr. Marg. f. 16. 



Variat colore pallido. Conch. Illustr. Marg. f. 17. 



Hab. ad fretum Magellanicum (Port Famine). 



4. Margarita sigaretina. Testa orbiculari-subdepressa, tenui, laevi, 



rufescente; anfractibus tribus, tumidis, posticfe depressiusculis, 

 ultimo maximo; sutura subinconspicua; apertura maxima, sub- 

 orbiculari, subobliqua; columella latiuscula, planulata, arcuata, 

 sulco longitudinali, indistincto instructa; long. 0'35, lat. 0*5, 

 poll. Conch. Illustr. Marg, f. 14. 

 Variat colore pallido. 



Hab. ad fretum Magellanicum (Port Famine) 

 § 2. Testa umbilicata. 



5. Margarita vulgaris. Leach. Testa orbiculari, subdepressa, tenui, 



nitida, pallescente : anfractibus quatuor, subtumidis, depressi- 

 usculis, ultimo majori ; sutura profunda, apertura magna. 



