No. 420.] AN EXTRAORDINARY ANT-GUEST. IOO9 
As soon as the ants had been transferred to the Lubbock 
nest they were given a number of young larva of Camponotus 
sansabeamus. These they soon proceeded to malaxate with 
their mandibles, twirling the morsels about in the mean time 
with their fore legs and lapping up the exuding juices with 
their tongues. Finally they deposited the crumpled and pulpy 
remains of the Camponoti on the trough-like ventral surfaces 
of their larva, which had been previously placed on their 
backs in a rough chamber dug in the earth of the nest. This 
chamber was immediately under the glass 
roof-pane, so that further developments 
could be closely observed with a pocket 
lens. Each ant-larva at once stretched 
forth its head eagerly and began to devour 
the viands with which it had just been 
provided. At the same moment the dip- 
teron larva, too, as if sniffing the odor of 
the fresh food, unwound its tapering neck 
from the ventral surface of its host, and, 
without shifting the attachment of its 
posterior end, at once plunged its man- 
dibles into the food. Under the lens both 
larvae could be seen greedily dining side 
by side till the last particle of the Campo- 
notus larva had been consumed or prema- dpi 
turely removed by the worker ants. Fic. r, — Adult larva of Packy- 
When the ant-larve were huddled close eic byes Fesi 
together, a collar-like larva was sometimes 
observed to reach over and help itself from the food supply of 
a neighbor ; but even when thus compelled to crane its neck 
to the utmost, it never shifted the attachment of its caudal end. 
Sometimes when there was no food within reach it would tweak 
with its sharp little jaws the sensitive hide of a neighboring 
ant-larva, till the latter squirmed with pain. It would some- 
times even tweak its own host, as if to make it wriggle and 
perhaps thereby incite the worker ants to bring a fresh supply 
of provisions. i ' 
The following day two living myriopods (Lithobius) were 
