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Updated: May 27, 2025
The small standing waters, formed by single cavities, are proportionably rich in water-beetles, among which is found a Dyticus of the form of the sulcatus, seven Colymbetes, Hydroporus two species, and a Gyrinus.
Not only were those familiars there, but they were represented by species belonging to the typical genera Gyrinus, Colymbetes, and Hydrophilus. Over these pools flew dragon-flies, whose larval stages are passed in the water, closely resembling others all over the world. All the land fauna was strikingly different from that of other regions; but the water fauna was as strikingly similar.
Although we could nowhere find, during our whole visit, a single drop of fresh water, yet some must exist; for by an odd chance I found on the surface of the salt water, near the head of the bay, a Colymbetes not quite dead, which must have lived in some not far distant pool. The common horsefly, which is so troublesome in the shady lanes of England, belongs to this same genus.
Although we could nowhere find, during our whole visit, a single drop of fresh water, yet some must exist; for by an odd chance I found on the surface of the salt water, near the head of the bay, a Colymbetes not quite dead, which must have lived in some not far distant pool. The common horsefly, which is so troublesome in the shady lanes of England, belongs to this same genus.
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