(wy) 
Alps among Petasites; and Lord Walsingham spoke in sup- 
port of the identification. 
Mr. McLachlan exhibited cooked locusts (Schistocerca pere- 
grina) received from the Rev. A. E. Eaton and sold in the 
market of Biskra, Algeria, under the name of ‘“ Jarad.”’ 
They were cooked whole, but the abdomen only was eaten. 
The President, Mr. Barrett, and Mr. Blandford made some 
remarks on the subject. 
Mr. Blandford, Hon. Sec., suggested that it would be 
greatly to the advantage of Fellows if notices of Exhibits of 
general interest, and likely to lead to a discussion, were sent 
to him beforehand, as was the case with kindred societies. If 
this were done, and the notices were accompanied by the 
names of Fellows likely to be specially interested in the 
exhibition, he would endeavour to send out intimations to 
them of the date fixed. As the plan was suggested for the 
convenience of Fellows, and was not provided for by the 
Society’s bye-laws, he must reserve the discretion in every 
case as to whether such notices should be acted on or not. 
The President and Mr. Merrifield, Hon. Sec., also spoke in 
favour of the proposal. 
Paper. 
A paper was communicated by Dr. A. G. Butler, F.L.5., 
on ‘‘ Seasonal Dimorphism in African Butterflies.’”” He con- 
tested the views of Mr. Guy A. K. Marshall (Tr. Ent. Soc. 
Lond., 1896, pp. 551—566) as to the distinctness of certain 
forms of Acrwa, and maintained that one part of Africa 
cannot and does not represent the entire range of a species 
with its extreme dry- and wet-season forms, and that the 
dry-season form of a moist district may be the intermediate 
or a wet-season form of a drier district. The author also 
stated that the black apical patch of the forewings in Acrea 
was not of specific value, inasmuch as all grades existed 
between the broadest apical patch and no patch at all; it was 
probably only a seasonal development or a mere variation. 
Many of the species recognized as distinct by Mr. Marshall 
were merely varietal, and were linked together by inter- 
mediate forms in the collection of the British Museum. Such 
