64 LIMN&ID&. 



Var. 3. labiata. Shell dwarfed and more solid, with the outer 

 lip much reflected and thickened. Lough Neagh, Ireland 

 (Moggridge), B.C. Near Birmingham (G. Sherriff Tye), J.C. 



Monst. sinistrorsa. Spire reversed. Kenn Moor, Somerset 

 (Norman), B.C. 



C. Shell elongated ; spire considerably produced. 

 6. L. PALUS'TRIS,* MULLER. PL. V. 



Body rather opaque, of a dark slaty-grey or deep violet-colour 

 above, greenish-grey beneath, closely mottled with indistinct 

 blackish and yellowish spots ; tentacles conical, slightly curved, 

 somewhat pointed at the tips, of a brownish colour which is 

 paler at the extremities ; eyes oval, black, seated on small 

 round tubercles ; foot oblong, slightly notched, and truncate 

 in front, rounded and faintly keeled behind. 



Shell oblong-conic, thick, opaque, of a dull brownish horn- 

 colour, with occasionally a violet tinge ; with strong irregular 

 striae in the line of growth, the spaces between them filled in 

 with rows of close-set finer lines, rather strongly ridged spirally, 

 especially on the last two volutions; epidermis thin; whons 

 6-7, rather convex, but angulated by the ridges, body whorl 

 occupying about two-thirds of the length of the shell ; spire 

 considerably produced, and ending in an acute apex ; suture 

 deepish, usually encircled by a slender white line ; mouth nearly 

 oval ; outer lip thickish, very little reflected ; inner lip spread 

 on the base of the penultimate whorl ; fold strong and sharp. 



Inhabits marshy places, slow streams, and stagnant 

 water throughout Great Britain. It is a sluggish and 

 irritable creature, and very voracious ; it frequently 

 leaves the water. The eggs vary from fifty to ninety 

 in number, and are deposited in capsules which in 

 form resemble a depressed or flattened cylinder. 



Var. r. Corvus. Shell larger, more tumid, purplish-brown. 

 Suffolk (Barlee), B.C. Near Birmingham (G. Sherriff Tye), 



* Living in marshes. 



