THE PEICKLY SNAIL. 83 



whorl, into sharp teeth or points, so as to present 

 under a lens the appearance of a very elegant spiral 

 of bristles. A friend, who has paid some attention 

 to the land shells in Sussex, affirms that he has found 

 pieces of decaying hark an excellent lure for many of 

 the smaller snails, and especially the one just named, 

 aculeata. Mr. A. F. Sheppard has met with aculeata 

 on the trunks of oak trees at Fulham (cf. "Zoologist," 

 1851, p. 3121). 



We should include amongst the shells of the chalk 

 district, Helix rotundata, had we not already referred 

 to it (p. 27) as being found upon the London clay. 

 With the mention of aculeata, therefore, we may 

 bring our remarks on the common British Helices 

 to a close. 



Two little shells, pretty generally distributed, 

 Azeca tridens and Zua lubrica, ought not to pass 

 unnoticed. The first named, a link between Buli- 

 mus and Clausilia, may be found amongst herbage 

 and on damp moss; the latter under stones and 

 logs in moist situations. The former has the mouth 

 furnished with teeth and folds, the outer lip notched, 

 and the inner lip thickened; the latter possesses 

 exactly opposite characters. 



G 2 



