FAM. 4. ALICIIDAE.—The members of this family have a large flat contractile base and simple tentacles. The body-wall is provided with numerous simple or compound outgrowths or vesicles, usually arranged in vertical rows. _Alicia mirabilis_ is a rare Anemone from Madeira with a very broad base, capable of changing its position with considerable activity, and of becoming free and floating upside down at the surface of the sea. Other genera of the family are _Bunodeopsis_ and _Cystiactis_. The genus _Thaumactis_, described by Fowler,[405] from the Papeete reefs, has many peculiarities, but is probably capable of crawling rapidly and of floating at the surface like other members of the family. The remarkable Anemone _Lebrunia_ from the West Indies may be included in this family. FAM. 5. PHYLLACTIDAE.—These are distinguished by the presence of a broad collar of foliaceous or digitate processes outside the circle of tentacles. The processes have some resemblance to the foliaceous tentacles of the Stichodactylinae. They are found in the Mediterranean, Red Sea, and on the shores of the Atlantic Ocean, but have not yet been found in the British area. FAM. 6. BUNODIDAE.—This family is characterised by prominent verrucae and tubercles of the body-wall. It contains several British species, of which _Bunodes gemmacea_ found between tide marks on our southern shores is fairly common. The very common British species _Urticina_ (_Tealia_) _crassicornis_ is usually placed in this family, but exhibits some peculiarities which seem {383}to warrant its removal to another division of the Actiniaria. It is found in tide pools attached to rocks, but is usually partially hidden by adherent sand or small stones. FAM. 7. MINYADIDAE.—This family contains a number of floating Anemones. The basal disc is folded over to form a gas bladder lined by a cuticular secretion. The species are principally found in the seas of the southern hemisphere. SUB-ORDER 2. STICHODACTYLINA. FAM. 1. CORALLIMORPHIDAE.—In this family the marginal cycle of tentacles and accessory tentacles are all of the same kind. The accessory tentacles are arranged in radial rows. All the tentacles are knobbed at the extremity. The musculature is weak. _Capnea sanguinea_, _Corynactis viridis_, and _Aureliania heterocera_ belong to the British fauna. They are all small Anemones of exquisite colours, but are not very common. The genus _Corallimorphus_ is principally found in the southern hemisphere. FAM. 2. DISCOSOMATIDAE.—The tentacles are all of one kind and are very numerous. The mesenteries are also very numerous. The sphincter muscle is strong.