282 Of the Wheel Animal 
Appearance, though no one Angle Current 
is any where diftindly vifible. 
From the under Part of the Thorax a 
fmall tranfparent Horn proceeds, which can 
be never feen unlefs the Infed turns on its 
Back or Side. I know not whether it be a 
Diftindibn of Sex, or to what other Purpofe 
it may ferve; for thefe minute Animals 
cannot poflibly be fo managed as to bring 
it under Examination when one pleafes; and 
as it is only feen fometimes by Accident, I 
cannot pretend to fay whether all or fome 
of them only are furnifhed therewith. It 
is fhewn in the Figures i and 2. a a. being 
more commonly feen when the Creature is 
in the Maggot Shape than at other Times. 
Immediately below the Thorax is another 
annular Circle or Divifion joining upwards 
to the Thorax, and downwards to the Ab¬ 
domen ; the Entrance whereof it ferves oc- 
cafionally to enlarge or diminifh. This is 
ihewn fig. 5. at the Letter e . 
The Abdomen or Belly f is much "the 
larged Part of the Animal, and contains the 
Stomach and Guts. When the Infed is full 
of Food thefe Bowels appear opake and of a 
Blood-red or crimfon Colour, extending in 
Length from the Thorax quite through the 
Belly and great Part of the Tail, and exhibit¬ 
ing a fine View of the peridaltic Motion, or 
fuch gradual Contradions and Dilatations as 
ieem 
