- A genus of little spiral pteropods, common in Arctic and Antarctic seas. It plays a role in the foodstuff of this right whales.
- A genus of pteropods, typical of the family Limacinidæ. L. borealis is one of the animals which form brit or whale-food.
- Just Like Limacea.
- A subfamily of Helicidæ, limited to the genus Limax: same as Limacinæ.