(Pisery [viii, ix, xii 
true, as he had previously stated (Proc. Ent. Soc. Lond. 1904, 
p. lviii) that the sexual scent in many Pierines, Lycenids, 
Satyrids and Nymphalids was distributed, though not manu- 
factured, by specialised scales either scattered over the wings 
or collected into patches. At the same time it was worth 
noticing that in some species, e.g. Ganoris brassicx, which 
were plentifully supplied with ‘‘androconia,” the scent was 
barely or not at-all perceptible; while in Gonepteryx rhamni 
and G. cleopatra, both of which, and especially the latter, had 
been found to possess a flower-like odour, he had been unable 
to detect any scales specialised for scent distribution. He 
was not at present prepared to assert, from his observations in 
the field, that the repulsive odours were in all cases con- 
fined to the tissues and juices of the body ; though in some 
instances the intensity of such odours was certainly increased 
when the thorax was crushed. 
Dr. G. B. Lonestarr exhibited four species of Acrwa taken 
in South Africa during the visit of the British Association, 
viz. :— 
1. A. anemosa, Hew., from the Victoria Falls, and Mochudi 
in Bechuanaland. Both sexes in good condition. 
2. A. alboradiata, Auriv., previously known to Mr. Roland 
Trimen by two females only, and considered by him as a 
variety of anemosa. This species was abundant near the 
hotel at the Victoria Falls, flying about the tops of trees, late 
into the afternoon, or even at dusk. The females were in 
far better condition than the males. After examining a long 
series Mr. Trimen is disposed to think it a distinct species, 
which should bear the name given by Aurivillius to Mr. 
Trimen’s original specimen when believed to be merely a 
variety of anemosa. 
3. A. atolmis, Westw. In the Hope Collection are West- 
wood’s types of two forms of this, to which he gave the names 
of atolmis and acontias. There seems no doubt they are one 
species. They were taken by F. Oates near the Victoria 
Falls in January, 1875. Mr. Trimen has specimens from 
Damaraland. Some of the specimens exhibited retain much 
of the brilliant red colouring which is so striking in fresh 
specimens during life. The darker specimens resemble Prof. 
