24 The Hftory of ANIMALS, 
It is common in cheefe, in flour, and in many other fubftances, Authors call it' 
limply, Acarus, * 
Acarus cvinus . 
The Acarus of the floeep. 
The body is flat, of a roundifh figure, but fomewhat approaching to oval, and of 
a yellowifii white colour, and has a Angle large round fpot on the back : the* anus is 
vifible in the lower part of the body; the thorax is fcarce confpicuous • the head is 
very finall and black; the mouth is bifid : the antenns are of a clavated figure, and 
of the length of the fnout; the legs are Ihort and black. The animal, in the whole 
much refembles the common dog-tick ; but it’s fnout is longer, and it’s body never be- 
comes fo diftended as that of the other with fucking, but always continues flat. 
It is common on Iheep, and it’s excrements ftain the wool green : it will live in the 
wool many months after it is Ihorn from the animal. Charleton, Mouffet, and 
others call it Reduvius. 
Acarus Infe&orum rufus ano albicante. 
The brown Acarus of InfeEls , with a white anus. 
This is an extreamly minute Infedt; it’s body is round, reddifh, and covered with 
a firm and hard Ikin; the head is very fmall, the neck fcarce vifible ; the legs are mo¬ 
derately long 5 the anterior pair longer than the others : it has a whitenefs about the 
anus. 
It is frequent on the bodies of many Infers, which it infefts as the loufe does others 5 
it runs very fwiftly : the humble-bee, and many other of the larger Infedts, are con¬ 
tinually infefted with it; but none fo much as the common black beetle, which has 
thence been called the loufy beetle. Lifter calls it, Pediculus fubflavus fcarabaeis infeftus ; 
Blankard, Pediculus Infedtorum volatilium; in the Ada Upfalienfia, it is much more 
properly named Acarus Infedlorum. 
Acarus arboreus ruber diftentus . %\jt 
The red , diftended , tree Acarus . 
This is a fmall fpecies; the body is roundifh, and the back not at at all flatted, as 
it is in many others; the fkin is fmooth, fhining, and glofly, and the whole animal 
feems diftended, and ready to burft; the colour is a bright red, but a little dufkier on 
the fides than elfewhere ; the head is very fmall, and the legs fhort : there is on each 
fide a fmall dufky fpot near the thorax, and a few hairs grow from different parts of 
the body. 
It is very common on trees, particularly on the currant, on the fruit of which we 
frequently fee it running. 
Acarus petrarum ruber antennis longioribus . 30)6 SrfOtKT 
, The red , Jlone Acarus , with long ante?tn<e. tflt'tt* 
This is very fmall, and of a bright red colour; the body is round and diftended ; 
the head is very fmall and pointed ; the legs are moderately long, and of a paler red 
than the body : the antennas are much longer than in any other fpecies. In the 
greater number of the others, indeed, they are fcarce confpicuous; thefe alfo, and the 
mouth, are of the fame pale red with the legs. 
It is frequent about old flone walls and on rocks, and runs very nimbly. 
Acarus aquaticus ruber abdomine deprejfo. 
The red water Acarus , with a deprejfed 
body . 
This is a fmall fpecies: the body is of a figure approaching to an oval, and the back 
appears deprefled ; it is of a bright and ftrong fcarlet colour. The head is fmall $ the 
legs are moderately long and firm, and are of a paler red than the body. 
3 
It 
