67 



Physa fontinalis, MUller. In clear ponds, ditches, and streams. - 



throughout the district. 

 P hypnorum, Lin. In slow streams and shallow ponds w>th much 



weed. Hempstead, in the field leading to Podgmead. Over, in 



a ditch near the Butts. 

 Planorbis comeus, Lin. Ditch in Maisemore Ham. very large and 



common. Combe Hill canal. 

 P. albus, MiiUer. With foregoing, and in Newent canal, Over, on 



potamogeton. 

 P glaber, Jeffreys. Locality uncertain. 

 P nautileus. Lin. In a small clear pond, full of weeds, cresses, &c. 



in the field next to Witcomb's mill at Barnwood, between it and 

 Saintbridge, nearly close to the hedge nearest Gloucester. 

 P carinatus, Miiller. Maisemore Ham ditch ; Newent canal. 



T^ „ Common 



P. margmatus, Drap. » " 



everywhere. 

 P. vortex, Lin. »» " 



common in Fairford and Cirencester district. 

 P. spirorbis, Lin. In small weedy ponds round Gloucester; 



Podgmead. Hempstead. 

 P. contortus, Lin. Maisemore Ham, Newent canal. Over. More 



common in Fairford and Cirencester districts. 

 P. nitidus, Miiller. Very good specimens in a pond at Barnwood, 



lying in a direct line between the church and mill above mentioned, 



and about half-way between them. 

 Limnsus pereger, Muller. Tlie commonest shell of the tribe in 



ponds, ditches. &c. near Gloucester, Barnwood, and Hemp- 



L. auricularius, Lin. Combe HiU canal, Stroud canal. 



L. stacxnalis, Lin. Maisemore Ham ditch. Combe Hill and Newent 



canals. Very common and large in stream at Kempsfoid, and in 



ditches at Siddington. 

 L truncatulus, Muller. In the Poplar at Upton St. Leonards, and 



most of the small brooks near Gloucester, in the most rapid parts 



of the stream. 

 L. palustris. Lin. Maisemore Ham. Common in the Fairford and 



Cirencester districts, where it appears to attain to a much larger 



size than in the vale. 

 Aneylas fluviatilis. Muller. Severn, at Wainload. On stones in 



the brook which crosses the Birdlip road, at Wootton. Canal, at 



Sharpness Point. 



