Crossword-Solution: ANCYLUS 7 letters, 1 clue 🏆 scrabble score: 12

Sir Charles Lyell informs me that a Dyticus has been caught with an Ancylus (a fresh-water shell like a limpet) firmly adhering to it; and a water-beetle of the same family, a Colymbetes, once flew on board the “Beagle,” when forty-five miles distant from the nearest land: how much farther it might have been blown by a favouring gale no one can tell.

The univalve shells most characteristic of fresh-water deposits are, _Planorbis, Limnæa,_ and _Paludina._ (See Figures.) But to these are occasionally added _Physa, Succinea, Ancylus, Valvata, Melanopsis, Melania, Potamides,_ and _ Neritina_ (see Figures), the four last being usually found in estuaries.

Roper shot some ducks, and I found a species of Ancylus; besides the species of Limnaea and Paludina, which we had previously met with.

Limnaea, similar to those of Europe, creep along the surface of the water; small Planorbis live on the water-plants, to which also adhere Ancylus; and Paludina, Cyclas, and Unio, furrow its muddy bottom.

Along the shore were strewn shells thrown up by the surf; and on examining them, I found them all to belong to well-known old-world genera--Unio, Planorbis, Ancylus, and Ampullari.