CONCHOLOGY. 



i:3iJ 



Shell. Oval or elongated, smooth ; spire pointed, its whorls as 

 if softened off; aperture ovate, elongated, widely notched anteri- 

 orly; the right margin entire; columella callous posteriorly, um 

 bilicated, and subcanaliculated at its left side ; an operculum. 

 Found in the Indian and South American seas. Five species. 

 E burn a glabrata. Eburna spriata. 



E. Ceylonica. E. areolata. 



E. lutosa. 



11. Genus Tereira. PI. XII. 



Animal. Spiral and high ; foot oval with a transverse anterior 

 furrow, and two lateral auricles ; head bordered with a small 

 fringe ; tentacula cylindrical, terminating in a point and very dis- 

 tant; eyes indistinct, situated at the root, and at the external side 

 of the tentacula ; mouth without proboscis ; tube of the respiratory 

 cavity very long. 



Shell. Without epidermis, ovate, with a pointed spire, low, or 

 subturriculated ; aperture wide, oval, with a strong slope anteri- 

 orly ; lower end of the columella twisted. Found in tropical seas. 

 Twenty-four species. 



Terebra maculata. 

 T. crenulata. 

 T. dimidiata. 

 T. raphanula. 

 T. muscaria. 

 T. flammea. 

 T. striatula. 

 T. chlorata. 

 T. cerithina. 

 T. subulata. 

 T. oculata. 

 T. Babylonica. 



Terebra Senegalensis. 



T. cingulifera. 



T. scabrella. 



T. lanceata. 



T. granulosa. 



T. duplicata. 



T. corrugata. 



T. caerulescens. 



T. myuros. 



T. strigilata. 



T. aciculina. 



T. vittata. 



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