Tag NATURAL HISTORY. 
The Crab Loufe, is fo called, for having fome refemblance to the 
fhape of acrab. It has a fhorter and thinner body than the commot 
fort. They feem to be generated in the pubes of thofe that are troubled 
therewith. ; 
Befides thefe infets that infeft men, moft animals-are faid to have 4 
peculiar fort; only the Fleas are common to many other creatures 
particularly Dogs. However it is affirmed by many, that Affes are 
never troubled with either of thefe fort of animals, which fome fupet- 
ftitious people. pretend, is owing to the riding of Chrift upon an Afs; 
_ but others with more reafon affirm, it is becaufe that animal feldom 
or never fweats. However they are both miftaken, becaufe thefe ver- 
min are not generated by fweat, as the ancients fuppofed, but proceed 
- from eggs, which we call Nits, like other infeés. 
The Lion % faid to be mightily infefted with a fort of Lice in the 
hair over his eyes, and as is pretended, they plague him fo much, they 
fometimes make him run mad. The Horfes are well known to be 
- troubled with vermin of this kind, which have red heads, and the relt 
of the body whitifh. Vhofe of Oxen and Calves are black, and they 
may be feen in great numbers on thofe.that are lean: they are almolt’ 
like the Lice of Hogs, only they are fhorter,.and a little thicker: 
Chofe of Hogs are fo large and hard, that they can hardly be killed 
with the fingers. Dogs have fome of thefe kind of animals, though 
very feldom,. and they look like nits, with-a whitifh head ;. but the reft 
of the body is of a blueifh black; they have been particularly taken 
notice of in Lap-dogs. The Lice of Sheep are very fmall, and have 
red heads, with whitifh bodies; thofe of Goats differ very little from 
thefe. Whe Deer when they have fhed their horns, are troubled with 
great itching in the eye-brows, which proceeds from Lice of the fame 
colour as the head.. 
Linnaus takes notice of feveral kinds of Lice, namely the common 
Loufe, ‘the Crab Loufe, thofe of Oxen, thofe of Crows, thofe of 
Ravens,: thofe of Thruthes, thofe of Starlings, thofe of Cranes, thofe 
of the bird called Avofetta, thofe of Turkeys, thofe of Fowls, that 
called the Death-watch,, and two or three more ;. to which might bé 
added an immentfe catalogue,. if it was worth while to obferve them: 
The: Deathwatch has an oblong flattih body, of a pale brownifh 
white colour, with an annular brown mark thereon, and a brown fpot 
behind towards the vent: the head is oblong, the eyes are large an 
_ yellow, and the feelers are as long as the whole body : the fize is about 
that of a common Loufe, and there are fpzts all down the fides, of 2 
reddith colour, that is one on every fegment of the body. It has its 
name from the ticking it makes, refembling that of a watch, which 
fome fuperftitions people have thought to have been a forerunner 
death. 
‘Lhe Monoculus, or one-eyed infect, is peculiar to watery places, and 
has the legs or-feet before, divided into branches, with which it eithe? 
fwims or leaps, and the body is covered with a cruft or fhell. It has 
but one eye, or more properly three that are placed clofe together. 
The cruftaceous water Jnfed, is very fmall, and is fometimes of 4 
brownifh, and fometimes of a reddifh colour: the body is nearly ovals 
— only it is fmaller towards the tail, which is long, flender, and forke 
at the end, and under it on each fide, there is frequently a large lute’ 
‘ Os 
