INSECTS. 
517 
generally posteriorly notched and margined; scutellum small, 
the abdomen large and oval; antennae filiform ; mandibles strong, 
crossed ; elytra margined, frequently striated, furrowed or with 
elevated points ; labium two lobed, and the chin one toothed ; 
anterior tarsi of the males dilated, the first four joints spongy 
below. 
Carabus morbillosus. — The Moreillous Carabus. 
Plate XCVII. fig. 12. 
Copper-green above, and black beneath; abdomen oblong- 
oval. Inhabits Europe, under stones in moist places. 
Genus DYTISCUS.— Latreille. 
Generic Character. —Body oval; six palpi; antennae provided 
with eleven joints; tarsi with five joints, the three first of the 
two anterior tarsi forming an oval palette. 
Dytiscus marginatus. — The Marginated Dytiscus. 
Plate XCVII. fig. 13. 
Elytra with a yellow border and not dilated; thorax with a 
yellow margin ; body blackish-green above, and fawn-coloured 
below. Inhabits Europe. 
Genus GYRINUS.— Linnceus. 
Generic Character. —With fusiform, clavate antennae shorter 
than the head; the four posterior feet broad and compressed. 
Gyrinus natator —The Swimming Gyrinus. 
Plate XCVII. fig. 14, 
Iridescent blackish-bronze ; feet rust-coloured, the four pos¬ 
terior ones short and compressed ; the anterior feet elongated ; 
antennae black. Inhabits Europe. 
TRIBE IT.-BRACHYPTERA. 
With a narrow elongated body, raised upwards at its posterior 
extremity when in motion ; antennae moniliform ; each jaw pro¬ 
vided with a palpus ; elytra shorter than the abdomen but 
covering the wings; anal orifice with cylindrical, conical and 
hairy appendages ; coxae of the two anterior feet generally large. 
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