It is the former of thefe which is reprcfented on the 
prefent plate. It is not often that a complete fpeci- 
men can be feen, as it generally happens that either 
the upper or lower part is broken off; a circiimflance 
which is extremely common in thefe animals, which 
poffefs a high degree of reprodudfive power, and 
may be confidered as poireffing the vital principle in 
every joint or fegment, which, when feparated from 
the refl-, continues to move in various diredlions, as 
if uninjured by its diflalfociation from the general 
chain. 
The upper figures reprefent the heads of Taeniae, 
{IS they appear when magnified, and which are the 
more worthy of obfervatioii, as they fo completely 
demonftrate the abfurdity of the dodlrine delivered 
by Linnaeus in the twelfth edition of the Syftcma 
Naturae; viz. that thefe animals are deftitute of a 
diftindl head, and that Tyfon and others, who had 
deferibed them with one were entirely miftaken. 
It fhould be added, that the Ttenite are oviparous 
animals, and difeharge their numerous eggs from 
the lateral foramina of their bodies. 
