At a little distance they were very puzzling, looking more like a water-beetle grown fat and lazy than aught else.
In the great Dyticus water-beetle this is done in a curious way.
I was only nearly eaten up by the perch; and then there was a duckling after me and a horrid dragon-fly grub and a water-beetle.
Compare the antenn with those of the locust and water-beetle.
We can fancy this creature propelling itself much in the same way as a “water-beetle” rows itself through the water in a pond.
I've found a rather rare species of a water-beetle, Dytiscus marginatus; do you know it?
In Colymbetes serricornis, a water-beetle, the male has a serrated clava of four joints.
Some insects which live in water, such as the water-beetle, breathe air in the same way as their relatives who live on land.
Ann Veronica watched a water-beetle fussing across the green depths.