The Hiftory of ANIMAL S, 2 5 
It is common in Shallow waters, where it runs very fwiftly along the bottom 3 
Frifch, calls it, Araneusaquaticusruber parvus; Charleton, Bupreftis araneola^ 
Acarus fcabiei. 
Z be itch Acarus . 
%fyz 3 ftcD ^nima 
This is a very fmall fpecies j it’s body is of a figure approaching to oval and lobated; 
it’s head is fmall and pointed ; it’s colour is whitifh, but it has two dufky femicircular 
lines on the back. The legs are fhort and of a brownifn colour, and are harder than 
the reft of the body, and as it were cruftaceous. 
It is found in the puftles of the itch : authors in general have fuppofed it caufes that 
difeafe; but, if this were the caufe, it would be found more univerfally in thofe puftuleS, 
It is more probable that thefe only make a proper nidus for it, 
Acarus pedihus primi paris cheliformibuL 
The Acarus^ with the fir ft pair of legs cheliform* 
This is a fmall fpecies: it’s body is roundifih and inflated, of a whitifh colour, and 
covered with a thin and fmooth fkin 1 the head is very fmall, and of a dufky colour 
toward the mouth. The legs are fhort, and the fore pair have claws like thofe of the 
crab or fcorpion. 
It is common in old rotten wood that is kept dry in old houfes. Frifch. calls it s 
Scorpio araneus. 
Acarus terreftris ruber abdomine deprejfo. 
The red land Acarus , with a deprejfed 
body . 
little fc&tiee 
et, 0? 'iiant* 
This is a fmall fpecies: it’s body is roundifh, but a little approaching to oval; the back 
fo me what deprefted : it is of a fine fcarlet colour, and covered with a velvety down. 
The head is very fmall; the eyes are two and very fmall; the legs are fhort and of a 
paler red, and there is a fmall black fpot near the infertion of the anterior ones. 
It is very common under the furface of the earth, and fomedmes on herbs and 
among hay. It is fuppofed to be poifonous, if fwallowed, but we don’t feem to have 
any certain account of fuch an effect. Lifter and others call it, Araneus coccineus 
exiguus. 
Acarus pedibus longijfmis . 3£t)Z Cfttttf) tlj0 
The lo?tg-legged Acarus . (¥£&£])* Of 
This is the iargeft of the Acarus kind : it’s body is roundifh, of a dufky brown 
on the back, with a dufkier fpot of a rhomboidal figure near the middle of it: the 
belly is whidfh ; the legs are extreamly long and flender. On the back part of the head 
there ftands a little eminence, which has on it a kind of double creft, formed as it 
were of a number of minute fpines: the eyes are fmall and black, and are two in 
number. \ 
It is very common in our paftures, towards the end of fummer. Ray and Lifter call 
it, Araneus criftatus longipes; Mouffet, Araneus longipes ; and, notwithftanding it’s 
having but two eyes, it has been alrnoft univerfally ranked among the Spiders. 
The other fpecies of the Acarus are, 1. The mufhroom yellow Acarus^ 2. The 
little black garden Acarus. 3. The Acarus, called the loufe of the ftarling. 
4. The pine-tree Acarus. 5, The dog Acarus, or dog tick. 6. The holly- 
oak Acarus. 7. The grey rough earth Acarus. 8. The variegated ftone Acarus. 9, 
The brown-backed willow Acarus. 10. The brown ftone Acarus, with fcarlet legs. 
11. The gregarious mufhroom Acarus. 12. The fea Acarus. 13. The great Acarus, 
or great fly loufe. 14. The very fmall fly loufe. 15. The knotty legged Acarus, found 
on old trees. 16. The marginated-fided, ftone Acarus. 17, The greenifti white 
Acarus of the lime-tree. 
H 
A R A N E A, 
