222 POPULAR CONCHOLOGY. 



culum small and horny. Animal very little 

 known. — 23 species recent, and 30 fossil. 



This genus is found in the eastern and tro- 

 pical seas, many species being abundant at 

 Java. The Pleurotoma buccinoides has no canal ; 

 but it has a notch, and also possesses the slit in 

 the right lip. P. gracilis is found on the British 

 shores. 



87. Turbinella. — Shell large, 

 heavy, and rather fusiform; spire 

 short ; mouth oval, having a long 

 and straight channel ; left lip with 

 from three to five distinct plaits, 

 which are at right angles with the 

 axis of the shell ; operculum doubt- 

 ful. Animal imperfectly known. 

 — 23 species, recent. 



Many of these shells are exceedingly heavy. 

 They are found in the Indian and African Oceans. 

 A reversed example of this genus was formerly 



