There are some pleasing passages in Arnobius, but on the whole he is a tumid and a tedious author.
The leaves, which are borne in pairs at the tumid nodes, are oval in form and have a Dicotyledonous type of venation.
So high as heaved the tumid hills, so low Down sunk a hollow bottom broad and deep, Capacious bed of waters.
The tentacles surround an area known as the peristome, in the middle of which there is an elongated mouth-opening surrounded by tumid lips.
In some species certain of the legs bear on their ventral sides furrows with tumid lips and lined by smooth non-tuberculate epithelium; they are called coxal organs, and it appears that they can be everted.