132 



Genus 2. PHASIANELLA, Lamarck. 



Animal ; disk narrow, head somewhat prolonged, tentacles long 

 and narrow, with the eyes situated on pedicles at the outer 

 base; mantle ornamented with three pairs of digitated pro- 

 cesses, and produced above the head into a conspicuous fringed 

 collar. Operculum calcareous, ear-shaped. 



Shell ; ovately oblong, smooth, polished, spire regular, columella 

 roimded, aperture oval, lip entire, acute, never reflected. 



The genus Phasianetta includes a small group of mollusks, comprising 

 a few species only, mainly characterized by the peculiar texture and aspect 

 of their shell. The soft parts are not unlike those of the preceding genus 

 of Turbinacea, excepting that the distinguishing features of the family are 

 more prominently developed. The fringed collar, described in Turritella, 

 forms a striking object in the annual of Phasianella, and its narrowed 

 disk is further distinguished by three pairs of digitated processes. The 

 shell is of a very different structure, and has long excited the admiration 

 of collectors, by its highly polished porcelain surface and beautifully varie- 

 gated painting. The operculum is moreover ear-shaped and calcareous. 



The Phasianellce live most abundantly in the situations they inhabit, 

 and all the larger species with which we are familiar are from the continent 

 of New Holland ; there is a small species, P. pidla, found on our own 

 coast, one, I believe, in the West Indies, and one in the Mediterranean. 



1. ambigua, Nuttall. 



2. angulifera, Lister. 



3. brevis, Menke. 



4. clegans, Lamarck. 



5. inflexa, Blainville. 



6. Lehmanni, Menke. 



7. lineata, Lamarck. 



8. marmorata, Ditfo. 



Species. 



9. Mauritiana, Lamarck. 



10. nebulosa, Lamarck. 



11. perdix, Gray. 



12. Preissii, Menke. 



13. pulchella, Recluz. 



14. pulla, Sowerby. 



15. rubens, Lamarck. 



16. solida, Deshayes. 



17. sulcosa, Mighels. 



18. tenuis, Michattd. 



19. varia, Sowerby. 



20. variegata, Lamarck. 



21. venusta, Reeve. 



22. Vieuxii, Payrwudeau. 



23. vinctus, Brown. 



Figure. 



Phasianella venusta. Plate 12. Fig. 58. Shell, showing the aperture 

 and variegated porcelain surface. — From Mr. Cuming's collection. 



