146 HELICIDJL. 



indigenous Fauna and Flora with any degree of 

 certainty from those which have been introduced. 



It is rumoured moreover that, of late, several foreign 

 molluscs have been intentionally imported into this 

 country. Whether this proceeding is desirable or not 

 is questionable ; but it is desirable that those who 

 choose to indulge their fancy in this way, should give 

 due notice to the world of their doings, in order that 

 naturalists may not be misled. It would not be 

 necessary to publish the precise position of the colony ; 

 the name of the species and the district in which it 

 had been placed would suffice. 



GENUS V.—BU'LIMUS* SCO POLL 



Body elongated, capable of being entirely contained within 

 the shell ; tentacles 4 ; foot somewhat long and narrow. 



Shell conical ; spire produced ; month oval ; umbilicus very 

 small. 



The B^dhni are very closely allied to the ILeliceSy 

 and resemble them in most particulars ; their tenta- 

 cles are, however, rather shorter and their dentition 

 somewhat different, the rows of teeth on the lingual 

 ribbon being slightly curved as they approach its 

 margin. 



I. BULIMUS ACU'TUS,t MULLER. Pl. VIII. 



Body thickish, semitransparent, light yellowish-grey, slightly 

 darker in front and beneath, tubercles thickly set and consider- 

 ably flattened ; tentacles greyish, darker above, upper pair close 

 together at their base, bulbs moderately globular, much swollen 

 at the base ; lower tentacles short, diverging ; foot subtruncate 



* A very inappropriate name, said to be a corruption of Btilin^ an 

 African word. f Pointed. 



