— 1 66 — 
Le Président remercie l’auteur pour sa belle conférence, illustrée 
d’une manière fort remarquable par toute une série de projections 
lumineuses démontrant clairement la structure si diverses de ces 
Insectes disparus. 
Il prie ensuite M. Donisthorpe de commencer sa lecture, mais 
celui-ci, désireux de présenter son travail en français afin que ses 
collègues du continent puissent plus facilement suivre ses expli¬ 
cations, avait prié M. J. Sainte-Claire Deville de vouloir bien 
en faire la traduction. C’est cette traduction que M. Malcolm 
Burr va lire aux auditeurs en remplacement de M. Donisthorpe, 
peu accoutumé à la langue française. 
Ants and their guests. 
(Résumé.) 
The inhabitants of Ants’ nests in Britain. After saying that all the 
main orders of Insects were represented in Ants’ nests as well as 
many Woodlice, Spiders, Acari, Millepedes, etc., Mr. Donisthorpe 
divided the inhabitants into four main groups, the True Guests, 
indifferently treated lodgers, so called « hostile persecuted lod¬ 
gers » and parasites. 
In the first and perhaps the most interesting division an account 
was given of the Formica sanguinea menage, and of the creation 
of the pseudogyne or false female by the presence of Lomechusa 
trumosa , giving at the same time the life history of this Beetle. 
A large number of diverse creatures are included in the indif¬ 
ferently cared for lodgers including the familiar Woodlouse 
Platyarthrus, the little blind Springtail commonly known as 
Beckia , various Acari, the interesting species of Dinar da, the 
robber Ants, Formicoxemis and Solenopsis, and various Flies, 
Spiders, etc. 
The life history of Clythra quadripunctata was fully illustrated, 
in which the. author elucidated the question as to how the eggs 
were carried into the nest. 
Several Staphylinid Beetles were given as instances of hostile 
and unwelcome lodgers, and an interesting slide was shown illus¬ 
trating the Beetle Myrmedonia funesta defending itself against 
