no 
HELICIDiE. 
and the five-banded (i7. fasciata Shepp.) are dis- 
tinct kinds, because he says they always breed to- 
gether ! He also observes that the spicula of the 
one-banded kind is four-sided in the middle, and 
perfectly straight ; in the five-banded it is also four- 
sided in the middle, but curved, as in H. aspersa ! 
When the shells are lying exposed to the sun with- 
out any shelter, their upper surface often becomes of 
a fine pink or rose-colour. 
The eggs are white, ovate. (See Pfeiffer^ t. 7. f. 3.) 
The animals sometimes have a morbid appetite, 
and eat worms, and even cooked meats. (See Sow. 
Zool. Journ, i. 285.) 
On this animal is sometimes found a parasitic 
insect, which has caused considerable interest among I 
the entomologists, and which has proved to be the 
larva of Drilus Jlavescens. (See Mielzinsky^ Isis^ 
xvi. (1825), p. 477.) 
The last three species in their normal state have 
five spiral bands ; the three hinder being continued 
on the whorls of the spire, and the anterior hidden 
in the cavity of the shell. 
One or more of the bands are rarely divided i 
longitudinally, when the shell appears to have six or | 
seven bands. 
One or more bands are sometimes more or less 
distinctly deficient; in other specimens some two or 
more of the bands are confluent together, making a I 
single broad band. j! 
In other specimens the colouring matter which l| 
forms the band is diffused over the whole surface of || 
the shell, and sometimes the bands are interrupted. 
