ASHFORD : LIST OF CHRISTCHURCH MOLLUSCA. 1 57 



[Ringwood, Holmsley, Brockenhurst]. One example of 

 V. lacunosa, Christchurch (J. W. Taylor). Hundreds of this 

 species, carried by winter overflow of R. Avon to adjacent 

 meadows, lead an aerial life during summer and some form 

 an epiphragm in periods of drought. 



L. truncatula. — Boscombe (J.H.A.); R. Stour and Avon at 

 Christchurch, Tuckton, Winkton, and [Ringwood]. Much 

 less numerous than L, palustris, but often with it. 



L. glabra. — As yet, only at [Holmsley] at roots oi Iris in one 

 damp hollow (J.H.A.). The young form a thickened rib 

 within the peristome after each fresh addition to the shell. 



Ancylus fluviatilis. — Occasionally in R. Avon, at Christ- 

 church and Winkton, and in a branch of that river at 

 Burton ; a few in R. Stour at Tuckton, on Nuphar^ with 

 A. lacustris. In the opinion of Mr. J. W. Taylor some 

 from the last named locality conform to Morelet's Ancylus 

 strictus, " laterally compressed with side-margins somewhat 

 straight and parallel." More plentiful and including the 

 whitish form (albida) in Somerford brook on stones ; in 

 Bure brook, near Mudeford, on gravel, rather small, dark 

 and corroded at apex ; [Holmsley]. 



A. lacustris. — River Stour from Christchurch up to Holden- 

 hurst ; R. Avon at Christchurch, Winkton, and [Ringwood] 

 on Nuphar^ Nyttiphxa, and Sagitta, but everywhere in its 

 white form only {albida). 



Arion ater. — The dark form occurs rather sparingly and 

 seems chiefly confined to damp meadows, Christchurch, 

 Winkton (dark olive), Chuton Glen, [Holmsley, Brocken- 

 hurst]. I have never seen it in the garden. 



The reddish-brown form {rufa) in various shades of 

 that colour occurs more frequently, chiefly in gardens on 

 kitchen and other refuse, Christchurch ; also away from 

 houses at Roeshot Hill and Hengistbury Head. 



A. subfuscus Drap. — Intermediate in size between A. ater 

 and A. hortetisis, orange-red to reddish-brown, with 



