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geminattts, in many districts a very injurious enemy to young vines, 

 is of the same yellowish brown grey colour as the soil of vineyards. 

 Clcunis sulcirostris, Cl. glauca, Cl. marmoraia, &c., are greyish, like 

 the dry light earth upon which they crawl. The resemblance is still 

 more striking in those beetles which dwell upon a slippery clay soil, 

 and which from their rough integument are unwillingly soiled with 

 this clay, as, for instance, Asida grisea, Brachycerus algirus, Meleus 

 variolosus, Trox arenarius, Opalrurn sabulosum, and many others. 

 Others, again, like our native tortoise-beetles (Cassidca) are generally 

 of the bright green colour of the plant upon which they dwell. 

 But the resemblance of insects in other orders to lifeless things is still 

 more remarkable, namely, in the Orthoptcra, in which many species of 

 the genus Mantis resemble fallen and green leaves, both in form and 

 colour, as Mantis siccifolia, M. oratoria, M. phyllodes, &c. The 

 locusts also, which dwell chiefly amongst high grass and upon green 

 plants, are usually of a bright grass green ; others, as L. Ephippium 

 and the Grylli, which prefer dry hedges and fields, are, like these, of a 

 grey streaky colour and sculpture. This is also the case with many 

 bugs, which, as they are deprived of all other means of defence, would 

 necessarily become the easy prey of all enemies if they did not, as in 

 the species of the genus Aradus, resemble the bark of trees where they 

 dwell, or were they not, like the Cord, difficult to discern upon fields and 

 hedges where they are found, from their grey colour. The same means 

 of defence is possessed by many of the moths which, as it is well known, 

 repose tranquilly during the day, and only fly at dusk. Many conceal 

 themselves in the slits of the bark, and, consequently, from their con- 

 formity of colour, are easily overlooked. The caterpillars also of many 

 Lepidoptera possess in their form and colour means to prevent their 

 being observed, many of them being green, like the leaves upon which 

 they live. Others, namely, the Geometers, so closely resemble the young 

 twigs of trees, that even upon a strict inspection they are difficult to be 

 recognised as caterpillars, particularly if they, as they not unusually do, 

 stretch themselves straight out, holding only by their posterior legs, 

 when they perfectly resemble a young leafless twig. I was myself once 

 thus deceived by the caterpillar of Ph. quercinaria, Borkh (Eunomus 

 Erosaria, Tr.), mistaking it for a small dry twig, upon wishing to 

 break off a small twig of oak, but I subsequently observed its motion, 

 and then, upon a closer inspection, recognised it as the caterpillar of 



