138 



POPULAR CONCHOLOGY. 



Family 2.— TRO CHA CEA. 



The animals have the eyes stalked ; they are provided 

 with frontal lobes, and they have fringed or thread-like 

 appendages to the sides of the foot. The shell is pearly, 

 spiral, of various forms, mostly operculated ; the colu- 

 mella is never flattened, nor straight. — Marine, and plant- 

 eaters. 



(Phasianus Montf. 

 - Shell oval, solid ; 



long, not wide, not pearly ; 



Phasianella. Lam. Phasianus Montf. ; Tricolia 

 Risso ; Eutropia Humph.)- 

 aperture oval, 



lips disunited at the upper part; right lip 

 sharp, left smooth ; the last whorl much 

 larger than the others ; operculum shelly. 

 Animal, head muzzle-shaped; two long and 

 ciliated tentacula, with eyes on distinct foot- 

 stalks at their external bases; no interten- 

 tacula lobes ; neck with a strongly fimbriated 

 lobe on each side ; lateral superior expansion 

 of the foot with three cirrhi on each side, 

 the middle pair often very small ; foot rounded in front, 

 pointed behind ; vent on the right side, and shortly tubu- 

 lar; branchial plume long, single, partially free; tongue 

 closely resembling that of Trochus.* — 25 species; also 

 fossil. 



Some of the species are most beautifully coloured, 

 smooth and shining, the patterns most elaborate and 

 curious ; they were formerly very rare, and are even now 

 much sought after by collectors. They are brought from 

 South America, India, New Holland, and the Mediter- 



Phasianella 

 australis. 



* Forbcs's British Moll. 



