(oon) 
ably in shape, some being almost regular ovals, others decidedly 
tapering. At the stage at which Iam comparing them they are 
less white, appear slightly yellow when compared with (. 
fasciatus, from which they are easily distinguished under a low- 
power lens. One of the short oval variety measured ‘560 mm. 
by 320 mm., a blunt-ended oval. Two of the tapering form 
measured, the one 630 by °350 mm. at the blunt end, and 
‘275 mm. at the narrow end; the other ‘650 by °350 mm. at 
one end, and ‘275 mm. at the other. 
Papers. 
Mr. A. Bacor read a paper entitled: “On the Persistence 
of Bacilli in the Gut of an Insect during Metamorphosis.” 
Commenting on this paper Dr. CHapman observed that 
among many points of interest, it suggested to him one 
which he did not remember to have seen mooted. In moult- 
ing (referring chiefly to Lepidoptera) provision for increase of 
size is not the only object in view, but also the removal of 
various possible microbic enemies. In “laying up” for a 
moult, a larva almost invariably first empties the alimentary 
canal ; at the actual moult, not only the skin, but the lining 
membranes of the tracheae and of much of the alimentary 
canal are cast also. The threads drawn from the mouth and 
anus, consisting of the linings of the primae viae, often seem 
long enough to represent the whole tube ; if this be so, then 
bacillary inhabitants would be got rid of, and in any case 
must be so to a great extent. It would be interesting to 
know what is the precise hiatus between the oral and anal 
portions, and what provision there is for establishing an 
aseptic condition of this portion of the tube. 
Messrs. Ernest A. Exuiorr and CraupE Moriry communi- 
cated “ A first supplementary paper on the Hymenopterous 
Parasites of Coleoptera.” 
Notice of Lecture. 
The Rev. G. WHEELER, one of the Secretaries, announced 
that he had been requested by Professor Sedgwick to draw 
the attention of Fellows to the Inaugural Lecture to be 
