132 LIMNZID&. 
Sub-genus.—-L{MNOPHYSA LFitzinger. 
4. L. STAGNALIS (¢xhabtting swamps) Linné. Pl. VIL, f. 5. 
Elongated, rather thick, not very glossy, pale whitish horn-colour, 
striated in line of growth; whov/s 6—8; the body-whorl forming most 
of the shell; sfzve tapering ; mouth large. A. 50mm. B. 25 mm. 
This is the largest member of the genus. It is common 
in England, Scotland and Ireland, but is not found in any 
other part of Wales than Anglesea. 
It is very variable and collectors will do well to secure 
series from all possible localities. 
The finest specimens that I have seen are two which I 
took in a pond at Whitchurch, Shropshire. ‘The largest 
measures 58 mm. in altitude and 30 mm. in breadth. I 
grieve to say the pond was drained soon after I made the 
capture and the locality destroyed. 
Var. I. frdgilis (Linné). Smaller, thinner and more 
slender than the type. 
Var. Il. dottuica (Clessin). Dark, suture deep, much 
smaller than type. 
Var. III. dactstris (Stud. ). 
Var. IV. dadidta (Jeff.). Outer lip enlarged. 
Var. V. variegdta (Hazay). Whorls variegated with 
white markings. 
Var. VI. élbida (Jeff.). White. 
Monst. I. senestrorsum (Jeff.). Reversed. 
Monst. II. scalériforme (Taylor). Whorls disconnected. 
