on PL AT@ KXIX, 
Bey oG. ee 
VORTICHLLAMVIRIDIS. 
CENERIC CHARACTER. 
A Worm capable of contraéting or extending itfelf, naked, with 
rotatory cilia. 
SPECIFIC CHARACTER. 
Cylindrical, uniform, green, and epake. Miiller’s Anim. Infuf. 
— 
The naked eye difcovers this {pecies as 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 direction, and caufes fuch an agitation of the water, that 
hotwithftanding its appearance, fome rotatory inftrument muft be con- 
cealed within the body, which the creature can put forth at pleafure. 
PLATE 
