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LELJCTA TO C~NsTANCE

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DEAlt SISTER,

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L 0 those who arc attentive observers

of Nature, nothing is more beautiful than the admirable harmony conspicuous between the structure of plants and animals, and the pur poses to which it is adapted.

The next genus, Dytiscus, Plunger or Diver,

affords an instance of this harmony, they being water-insects, furnished with hind legs peculiarl.y adapted to swimming, tapering towards the point, and beset thickly on each side with fine, strong hairs, which serve the office of oars.

One of the largest European species is the

olive colour, with the thorax and wing-sheaths
bordered with yellow, and highly polished in
every part, which secures it from wet. If you
chauce to walk by stagnant waters in a sum
mer's evening, it is likely you will see this fly,
as well as the area that produces it; which
has

1)3tiscus marginalis,

is of a blackish