MoM. 



Dmsion of Mollisfes 



"orv 



LIST OF ILLUSTRATIONS 



Canon Horsley in his study examining a rare variety of whelk 

 (var. Babylojiica) from a stall in the Walworth Road. 



Frontispiece. 



i¥. /^^wrt'//^, half natural size 



Dextral H. aspersa and H. pofiiatia 



Love-darts of i^ /t'Wfl!//^, much magnified 



K\^ H. nemoralis at rest on hawthorn 



Names of parts of shell and of body. Uiiio, Liuinaa 

 Vivipara, a.n& A?-ion 



Body of snail and of slug 



Three specimens of Avion aier, showing tentacles, breathing 

 orifice, and slime gland 



Testae ell a h allot idea 



Hellcella vlrgata at rest on thistle, natural size 



Some of our smaller shells 



Paludina contecta (two) and Llinncea stagnalls on water-weeds 



Neritina and A ncyhis ... 



Freshwater mussel breathing and eating ... 



II 



13 

 15 

 17 



22 

 23 



31 



35 

 45 

 47 

 57 

 59 

 61 



