266 CUNDALL : ON THE MOLLUSCA OF BRISTOL 



Valvata cristata. Blaise Castle; Kenn Moor. 



Vertigo antivertigo. The Downs ; Boiling Wells. 

 V. pygmaea. Ashley Hill; The Downs. 



V. minutissima. Durdhani Downs (J. G. Jeffreys). 



V. angustior. Rejectamenta of River Avon (J. G. Jeffreys). 



V, alpestris. Over; Gloncester; canal banks at Sharpness (Jones). 

 Zonites crystallinus. Stapleton; Leigh Woods; Blaise Castle; 



Redland, &c. 

 Z. crystallinus var. complanata. Leigh Woods (J. G. Jeffreys). 

 Z. fulvus. Leigh Woods; Stapleton; Hor field. 

 Z. fulvus var. mortoni. Somersetshire. 

 Z. cellar! US. General. 

 Z. cellarius var. albida. Clifton; Redland. 

 Z. alliarius. Leigh Woods; Blaise Castle; Portishead, &c. 

 Z. nitidulus. Coombe Dingle; Leigh Woods; Blaise Castle, &c. 

 Z. radiatulus. Leigh Woods. 

 Z. purus. Leigh Woods; Coombe Dingle. 

 Z. purus var. margaritacea. Clifton. 

 Z. nitidus. Coombe Dingle; Bathampton; Boiling Wells. 



The above list comprises 177 species and varieties, being 107 

 species and 70 varieties. Of these I have personally observed 91 

 species and 19 varieties; and with respect to several of these, 

 their localities in the district do not appear to have been before 

 recorded. With regard to the remaining 16 species and 51 

 varieties some are extremely doubtful, and the presence in the list 

 of Clausilia biplicata, Assiminea Grayana, Conovulus bidentatus, 

 Limncea giutinosa and involuta, Succinea oblonga and Vertigo 

 alpestris is in all probability the result of accident or error. It 

 will be seen that the majority of the remainder are, if rare, well 

 authenticated, and the discovery of the others is presumably 

 simply a matter of time. 



J.C, iii., January, 1882 



