iS PLATE XXIx. 
1 of we 
VO RP] 6 E-beeetER PTS.” 
GENERIC CHARACTER. 
A Worm, capable of contrating or extending itfelf, naked, with 
rotatory cilia. , 
SPECIFIC CHARACTER. 
Cylindrical uniform, green, and opake. Miiller’s Anim. Infuf. 
To the naked eye this {pecies appears a mere point : when magni- 
fied it is of a dark green colour, almoft opake, nearly cylindrical, 
obtufe at the extremities, and deftitute of limbs. It moves circularly, 
or in a ftrait dire@ion, and caufes fuch an agitation of the water, that 
notwithftanding its appearance, fome rotatory inftrument muft be con- 
cealed within the body which the infeét can put forth at pleafure. 
PLATE 
