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tranfparent, compofed of rings ledening gradually to 
the extremity, where it is furrounded with a circle 
of fmall bridles, which likewife are moveable at the 
will of the animal. Thefe, with other fmall hairs 
on the trunk, difappear when it dies. 
Along the infide of this tranfparent probofcis the 
fpiral dark-coloured tongue appears very plain : this 
the animal contra&s and extends at plealure. 
The mouth appears like that of a contra&ed 
purfe, and is placed in front, between the fore claws. 
In the folds of this membraneous fubdance are fix or 
eight horny laminae or teeth (landing erect, each 
having a tendon proper to direct its motion. Some 
of thefe teeth are ferrated, others have tufts of (harp 
hairs indead of indentations on the convex fide, that 
point down into the mouth ; fo that no animalcule 
that becomes their prey can efcape back. 
Under the mouth lie the domach, intedines, and 
the tendons by which they adhere to the (hell. 
This then is the general character of the animal of 
the whole genus, whether with (ferns or without. 
I (hall now give you a fhort defcription of the fe- 
veral kinds I have met with, befides thofe of your 
own, and (hall divide them into two kinds ; thofe 
that have (ferns, and thofe that adhere by their (belly 
bafes. 
The fird and mod remarkable of thofe that have 
dems is the Barnacle, Fig. i. This differs from the 
Lepas of Linnaeus in not having a tedaceous, only a 
cartilaginous or flefliy covering. On the top of it 
are two eredt tubular figures like ears : thefe have a 
communication with the internal parts of the animal 
(See Fig. i . b). Thefe inner parts agree with the 
general 
