13 



Fam. Lymnacea. 

 X'KY. Planorbis, Mull, 



1. con tortus. 



Planorbis con tortus, JIull. — Helix contorta 

 Lin. 

 Ditches in the Curraghs. Animal noticed by 

 Jeffreys. 



2. hispidus. 



Planorbis hispidus, Drap. — P. albus, MulL 

 — P. reticulatus, Risso. 

 Ditches in the Curraghs. Animal noticed by 

 Jeffreys. 



3. imbricatus. 



Planorbis imbricatus, 3Inll. — Planorbis im- 

 bricatus and cristatus, Drap. — Turbo 

 nautilius, Lin. 

 At the Callane, Jurby. Animal noticed by 

 Jeffreys. 



4. spirorbis. 



Planorbis spirorbis, MulL — Helix spirorbis, 

 Lin. — Planorbis vortex, |S. Drap. 

 Ditch of the encampment at Ballacurry, Andreas. 

 Near the Nunnery, Douglas. Mr. Wallace. The 

 animal is noticed by Jeffreys. 



XXVI. Lymnaea, Lam. 

 1. peregra. 



Lymnaea peregra. Lam. Drap. — Limnea 

 limosa, i^/e?^i. — Lymnaea putris, Flem. (Ed. 

 Enc.) — Buccinum peregrum, Mull.^ 

 Helix putris. Pen. — Helix peregra, Mont, 



