SLUGS. 
87 
Dr. Ball observes, “I first became aware of 
this Testacella preying on worms by putting 
some of them in spirits, when they disgorged 
more of these animals than I thought they could 
possibly have contained : each worm was cut, 
but not divided, at regular intervals. I after¬ 
wards caught them in the act of swallowing 
worms four and five times their own length/'’ 
Testacella , and the other predaceous pulmo- 
niferae (Daudebardia, Glandina , and Cylindrella ), 
do not possess horny jaws. The lingual ribbon 
is very large and wide, composed of about fifty 
transverse rows, which are oblique, and descend 
towards the middle; the teeth are conical, regu¬ 
larly curved, barbed at the point, and having a 
projection on the middle of the posterior side, 
from which the remainder thickens; the teeth 
diminish in size towards the centre; there are 
51 in each row. 
The animal, while engaged in laying its eggs, 
about ten in number, draws the head and tenta¬ 
cles in ; the reproductive orifice is situated on 
