ORDER APEDICELLATA. 455 
nothing in it but sand and fragments of shells. Numerous 
vessels appear to unite it to the external envelope, and there 
is, moreover, along one of their sides, a filament which may 
be nervous. Two long pouches situated in front, have their 
external orifices a little under the anus, and internally, near 
this last orifice, is sometimes seen a packet of branched 
vessels, which may appertain to the respiratory function. 
These animals remain in sand under the sea water, like the 
arenicole, thalassema, &c., and they are sought after like 
those, for the purpose of being used as bait. 
There are several species of them as yet but badly dis- 
tinguished. 
One of them, Sip. edulis, Nob., Lumbricus edulis, Gm., 
Pall., Spic., Zool. x 1. 7. serves as food for the Chinese who 
inhabit Java, and who go to seek for it in the sand, with little 
bamboo sticks prepared for the purpose. 
Others, sufficiently small, Sip. levis, Sip. verrucosus Cuv., 
pierce the submarine stones, and lodge in their cavities. 
BoNELLIA, Rolando, 
Have the body oval, a proboscis formed of a plicated lamina, 
susceptible of an extreme elongation, and forked at its ex- 
tremity. The anus is at the opposite extremity of the body ; 
the intestine is very long, replicated several times, and near 
the anus are two ramified organs, which may serve for respir- 
ation ; the eggs are contained in an oblong sac, which has its 
issue near the base of the proboscis. 
These animals live deeply in the sand, and protrude their 
proboscis as far as the water, and even sometimes into the 
air itself, when the water is low. 
We have one species in the Mediterranean, Bonellia 
viridis, Rol. Ac. de Tur. t. xxvi. pl. xiv. 
