386 THE ZOOLOGIST. 



Var. labiata, Jeffreys. — Eat bam, Chichester (W. Jeffery). 



Var. fragilis, Linne\ — Lewes, in the Pells (W. C. Unwin). 



Var. variegata, Hazay. — Winchelsea (Eufford collection, 

 Hastings Museum). 



L. glabra, Miiller. — Ditches and shallow pools, rare. Wayside 

 pools beyond the Great Pool. Horsted Keynes (W. Whitwell) ; 

 Water-hole by roadside at Framfield, near Uckfield (Rev. C. E. Y. 

 Kendall) ; near Mailing, Lewes (W. C. Unwin) ; Heathfield 

 (E. A. Butler) ; in narrow grassy ditches at Albourne, Cowfold, 

 and Henfield (W. Borrer). 



Piano rbis corneus, Linne\ — Ponds and sluggish streams, 

 widely distributed. 



Var. albina, Moquin-Tandon. — Lewes (C. H. Morris) ; near 

 Arundel (W. Jeffery). 



P. albus, Miiller. — Generally distributed in ponds, lakes, and 

 ditches. 



P. glaber, Jeffreys.— A very rare species. Only two Sussex 

 records. Shoreham (W. Jeffery, ' Journal of Conchology,' v. 

 41) ; "I have found this species in a small pond in my own 

 grounds at Cowfold" (W. Borrer, quoted by Harting, 'Zoologist,' 

 1878, p. 165). 



P. crista, Linn6 (= P.nautileus, Linn6). — A common species. 

 The smooth form known as var. laevigata, Adami, is equally 

 abundant as the type. 



P. carinatus, Miiller. — Locally abundant in ponds and slow- 

 running streams. Lewes Levels (W. C. Unwin) ; marsh ditches, 

 Southover, Lewes (Jenner) ; Mailing Marshes (Unwin) ; Hastings 

 (Diplock's 'Guide'); common in the levels of the Arun and 

 Adur (J. E. Harting) ; Harting (Weaver) ; Surrey and Sussex 

 Canal, near Alfold (E. W. S.). 



P. umbilicatus, Miiller (= P. complanatus, Jeffreys). — Abun- 

 dant in ponds and slow-running streams. 



Var. rhombea, Turton. — Marshes between Lewes and New- 

 haven (W. C. Unwin) ; Lewes (Rev. C. E. Y. Kendall). 



Monst. terebrum. — Eatham, Chichester (W. Jeffery) ; Pevensey 

 (Rufford collection, Hastings Museum). 



P. vortex, Linne\ — Widely distributed in ponds and slow- 

 running streams. Frequently malformed. 



Var. compressa, Michaud. — Pevensey (A. J. Alletsee). There 



