ASHFORD : LIST OF CHRISTCHURCH MOLLUSCA. 1 55 



at [Ringwood] ; in most ditches, sometimes abundant^ often 

 encrusted but rarely decollated. One specimen with elon- 

 gate spire ( prodiuta) Tuckton. [Water draining from the 

 New Forest appears to be more detrimental to the shell. In 

 a stream near Holmsley Station, 24th Sept., the decollated 

 condition was general, so also, 13th May, near "The 

 Queen's Bower," N. of Brockenhurst, where, in addition 

 to loss of spire, the body whorl and occasionally even the 

 operculum was deeply pitted]. 

 B. leachii.- — Sparingly, Christchurch, Winkton, [Ringwood], 



Tuckton. 

 Valvata pisci nails. — River Avon at Christchurch and [Ring- 

 wood] moderately abundant ; R. Stour up to Tuckton, 

 occasional \ [Brockenhurst, Holmsley]. 

 V. cristata. — With the last, in both Stour and Avon, but more 



frequent in latter ; [Ringwood]. 

 Planorbis nitidus. — Four specimens on weed in Somerford 

 brook, near Christchurch, with P. nautileus (J. H. A.); two 

 dead shells among rejectamenta of R. Avon. 

 P. nautileus. — Moderately abundant in Somerford brook, 



small (August) but all beautifully crested {cristata). 

 P. albus. — Widely distributed, but nowhere very abundant 

 or fine. River Avon from Christchurch to Sopley [and at 

 Ringwood] ; R. Stour from Christchurch to Iford Bridge ; 

 Somerford ; Boscombe Chine ; [Lymington R. at Brocken- 

 hurst]. One conically-coiled shell at Tuckton (J.H.A.). 

 P. spirorbis. — River Avon at Christchurch j plentiful in 1880 

 in a shallow grassy roadside ditch, di:y in summer, but not 

 found there recently; Waterditch ; [Holmsley, numerous]. 

 A shell curiously twisted into a cylindrical form (J.H.A.) ; 

 and a discoidal shell with whorls irregularly separated, 

 Christchurch. 

 P. vortex. — Much less local than P. spirorbis. Throughout 

 lower reaches of both Avon and Stour and in most ditches ; 

 [Ringwood, Brockenhurst]. 



