The Hifiory of A N I M A L £ 
Coccus hfperidum , 
The Coccus of the orange-tree . Xpe green ^rntfNmg. 
This is a very extraordinary Infedt, and has fo little the appearance of the animal 
kingdom, that, though it has been at all times very abundant in ourifoves and green- 
houfes, it was very long before it was fufpeded to be an Infeft, or acquired the honour¬ 
able name of the green Houfe-bug : it is a fmall creature, of an oval figure and flat * it 
adheres firmly to the bark or leaves of trees; it’s back is a little prominent, and "it’s 
belly hollowed ; and it is obtufe at the anterior part, and emarginated, or, as* it were, 
bifid at the pofterior. What we thus fee of it, is a kind of fhell or covering, within 
which, the body of the creature is inclofed : this is fmall and flat; the legs areVix, and 
they are very flender ; the eyes are very fmall and black, and the antenna? are flender : 
the whole Infedt is of a greenifli colour ; it can thrufl out it’s legs at pleafure, and there 
is a period of it’s life, in which it moves about, though but flowly; but/for the far 
greater part, it adheres firmly to the leaf, remaining in it’s place/ and fucking the 
juices : this is the female of the fpecies : the male is a fmall fly, very inconfiderable in 
proportion to the female in fize : it’s body is flender and oblong; it’s legs long ; it’s an¬ 
tennas fhort, and it’s wings white. 
The female is frequent on our orange and lemon trees, and on many of the others, 
preferved in our ftoves and green-houfes. 
Coccus aquaticus 
The water Coccus . 
This is a fmall fpecies: it’s body is of an oval figure, and is elevated and rounded on 
the back, and flat on the belly : it’s colour is brown, and, from it’s hinder extremity, 
it thrufts out a kind of white hairy beard, which is bifid and gelatinous; near this ex¬ 
tremity of the body, there is placed an obtufe tubercle; and, near the other extremity, 
an acute one. 
It is common on the leaves of the little water lily, and fome other water plants: it 
very rarely fhews it’s legs; when it does, they are flender and fomewhat hairy: the 
male is a fmall fly, with filky whitifh wings, fpotted with brown. 
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Coccus hetulce. 
The Coccus of the birch-tree. 
This is a larger fpecies than any of the former : it’s body is oblong, fomewhat hairy, 
and compofed of feveral rings or joints: the legs are fhort, and the antennae very flen¬ 
der : it is of a deep dufky olive colour. 
It is frequent in our woods, on the beech, the birch, the broad-leaved elm, and fe¬ 
veral other trees: it is ufually found Angle, affixed to their branches at their divarica¬ 
tions : the male is a little fly, with dufky brown wings. 
Coccus Tnfe&orum. 
The Coccus of InfeEis . 
This differs from the others, as much in fhape, as in the place where it is found : 
it is a very fmall fpecies: it’s body is of an oval fhape, and has an acute edge; it is 
fomewhat convex, and of a reddifh-brown colour ; the furface of the whole body is 
fmooth, but not gloffy ; the legs are Very fhort, and the antennas fcarce vifible. 
It is frequent on the bodies of fome of the larger beetles, where it paffes the greater 
part of it’s life, without changing it’s place : there are ufually a great number of them 
on the fame Infefh ' ' j ■ 
The other fpecies of the Coccus are, i. The Coccus of the canary-grafs; this is fixed 
to the roots of that plant, in the manner of the firfi: fpecies. 2. The Coccus of the 
Jacobtea ; this is found on many of the compofite flowered plants. 3. The Coccus of 
the alder. 4. The Coccus of the floe and peach-tree 
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T H R I P S. 
