The Hiftory t/ANIMALS. 15 
LUMBRICUS. 
t H E Lumbricus is an Infect of the larger kind, of an oblong form, corifidera^ 
bly thick, rounded in fhape, and covered with a foft and tender (kin, marked 
with annular ridges and furrows. 
Lumbricus Icevis. 
The fmooth Lumbricus . 
This Infedt, when full grown, is often ten inches in length, and more than a third 
of an inch in diameter. It’s colour is a dufky red, and it’s fkin is formed into rings, 
but is fmooth and foft to the touch. 
It is common every-where, at little depths, under the furface of the earth ; and, in 
the different periods of ids growth, varies fo extreamly in colour and external appear- 
ance, that people, lefs acquainted with the variations of this kind in animals, have 
made four or five different fpecies of it, under the names of the leffer worm, the 
brown worm, the pale red worm, the dunghil worm, &c. It is frequent alfo in 
the human intefiines, and in thofe of fome other animals; and in this ftate has been 
fjppofed a different fpecies, and called by a new name. Ray has defcribed it three 
times over, as three different fpecies, under the names of Lumbricus major, Lumbri¬ 
cus minor, and Lumbricus'in tefiinorum teres. Every worm has the feparate parts of 
generation of both fexes, and they rife out of the earth to copulate ; each at the fame 
time impregnating the other, and being itfelf impregnated. The moles feed on them, 
and they are in continual dread of thofe defiroyers: hence it is, that on fiamping up¬ 
on, or otherwife fhaking, the earth where they are, they crawl out on the furface to 
avoid thofe creatures, which they fuppofe occafion the motion. 
Lumbricus /caber. 
The rough Lumbricus . 
This fpecies grows to a foot, or more, in length, and to the tbicknefs of a man’s 
finger. It is of a pale red colour, and is compofed of a number of rings or annular 
joints, as it were, in the manner of the other $ but the fkin is fcabrous, and all thefe 
rings are covered with little prominences, fo that it is extreamly rough to the touch. 
> It an inhabitant of the mud about the fea-fhores, and ferves for food to many 
kinds of fifli x I have met with furprizingly large ones about the Bognor rocks in 
Sufiex, 
T M N I A. 
T H E Taenia is an Infedt of an 
joints or articulations, in the 
necklace. 
oblong form 5 the body is compofed of evident 
manner of the links of a chain, or beads of a 
Tcenia plana . 
The flat Tcenia . 
This grows to a furprizing length, frequently to that of feveral ells. It 5 s body is 
not rounded, but flat, and is compofed of articulations of about a third of an inch 
long each, and of about two thirds of their length in breadth } the fkin is fmooth, and 
the colour is whitifh. 
It is found in the human intefiines, and in thofe of many other animals, as well fifli 
as quadrupeds. Linnaeus found one of them once in the mud of a fpring, but very 
probably it had been voided by fome animal $ if that were it’s native place, it would 
be met with oftener there, The medical writers call it Taenia, and Lumbricus 
iatus. 
Tcenia 
