lix, 1xi, Lxii] Gi) 
butterfly is stiff. So long as stiffening has not taken place, 
the scent is more easily detected and estimated at home 
than in the field. Rubbing the wings is in most cases un- 
necessary. 
“T exhibit this evening spirit extracts of the wings of 
Mylothris agathina and Belenois severina, which will be found 
easily distinguishable by the sense of smell from each other 
and from the pure spirit. On a future occasion I hope to 
say something of the odours as they exist in other groups of 
butterflies.” 
A discussion on the presence and use of scents in various 
orders of insects followed, in which the President, Professor 
Pouttoy, Col. C. T. Bryenam, and other Fellows joined. 
Wednesday, November 15th, 1905. 
Dr. F. A. Dixey exhibited some specimens of African 
Pierine, and remarked upon them as follows :— 
“The recent visit paid by Dr. Longstaff and myself to 
South Africa fell, so far as Natal and Rhodesia are concerned, 
well within the limits of the dry season. I have brought 
here for exhibition representative specimens of four species 
of Teracolus, viz, 7. anne, Wallgrn., 7. omphale, Godt., 
T. achine, Cram., and J. auxo, Luc., all taken by us in those 
localities during August and September of the present year. 
Wherever possible, I have included the male and female of 
both the Natal and the Rhodesian form of each species 
exhibited. I also show, for comparison, male and female 
specimens of the same four species, taken in the same localities 
as our own, but during the wet season of the year instead of 
the dry. As none of the specimens exhibited was selected for 
the purpose of proving any point, but each is a fair repre- 
sentative of the category to which it belongs, the whole 
assemblage may be taken as an illustration of the general 
correspondence of the variation of these particular forms with 
the meteorological conditions prevailing at the time of year 
when they are respectively found. So different in appearance 
