no JOURNAL OF CONCHOl.OGY, VOL, I4, NO. 4, OCTOBER, I9I3. 



Planorbis corneus Linne. — Very local. Yardley (Thomasson). 

 Ditches and ponds connected with the Avon (Doeg). 



P. albus Miiller. — Frequent in ponds. Malvern. Earls Croome. 

 Near Worcester (Recce). Dowles, Wyre Forest. 



var. draparnaldi Sheppard. — Pirton Pool (Reece). Earls 

 Croome. 



P. glaber Jeffreys. — Very rare. Newpool, Malvern, amongst the 

 alga Cladopho7-a. 



P. crista Linne. — The type is not infrequent in small and large 

 ponds. Malvern. Earls Croome. Northwick Pool (Reece). A white 

 form at Madresfield in company with the type. 



var. laevigata Adams. — Much more plentiful than the type in 

 some stations. 



P. carinatus Miiller. — Apparently rare and local. Earls Croome. 

 Upper Wick (Recce). 



p. umbilicatus Miiller. — Widely distributed and sometimes 

 abundant. Castlemorton Common. Earls Croome. Hartlebury. 

 Worcester (Reece). Dowles Brook, Wyre Forest. 



P. vortex Linne. — Widely distributed but rarely abundant. Earls 

 Croome. Defford Common. Near Worcester (Reece). Haselor 

 near Evesham (Doeg). 



P. spirorbis Linn^. — Generally distributed and often abundant. 

 Malvern. Earls Croome. Near Worcester (Reece). Evesham 

 (Doeg). Hartlebury. Defford Common. Castlemorton Common. 

 Throckmorton. 



P. contortus Linne. — Local, but fairly plentiful where it occurs. 

 Near Malvern. Earls Croome. Near Worcester (Reece). Evesham 

 (Doeg). 



P. fontanus Lightfoot. — Rather local. Malvern. Earls Croome. 

 Nea.i Worcester (Reece). 



Segmentina nitida Miiller. — Rare and very local. " Stinton 

 Pool, Crossway Green, and Malvern " (" Victoria County History"). 



Physa fontinalis Linne. — Widely distributed and generally 

 plentiful. Earls Croome. Castlemorton Common. Birtsmorton. 

 Near Worcester (Reece). Brooks running into the Avon (Doeg). 

 var. curta Jeffreys. — Hill Croome. 



Aplecta hypnorum Linne. — Much more local than the last 

 species. It appears partial to small pools that dry up in the summer. 

 Marsh Common, Defford. Earls Croome. Near Worcester (Reece). 



Paludestrina jenkinsi Smith.— This is plentiful in a backwater 

 of the Severn at the Mythe Toot, Tewkesbury, just on the borders of 



