300 THE ZOOLOGIST. 
Mr. Meldola also exhibited some beetles of the genus Spermophagus and 
their cocoons, which had been found in a packet of seeds of Cassia neglecta 
sent from Brazil by Dr. Fritz Miller to Mr. Darwin. The full-grown larve 
had emerged from the seeds, leaving the latter in a damaged condition, 
and had spun the small cocoons from which the beetles had issued, these 
insects having reached this country alive. Mr. Meldola next exhibited the 
proboscis of a Sphinx-moth caught by the narrow tube-like nectary of a pale 
yellow Hedychium. This specimen had also been sent from Brazil by 
Dr. Fritz Miiller, who states that Sphinx-moths are frequently found caught 
in this manner. Mr. Meldola, in conclusion, stated that he had been 
requested by Dr. Fritz Miiller to ask the Members of the Entomological 
Society to aid him in his microscopical examination of the scent-producing 
organs of Lepidoptera by sending to him, addressed to Blumenau, Santa 
Catharina, Brazil, wings of butterflies, especially of such species as are not 
found in that country, the names of the insects in all cases to be given. 
Sir Sidney Saunders communicated some notes by M. Lichtenstein, “ On 
Phyllowera vastatrix and other Plant-lice,” giving conclusions derived from 
ten years’ breeding of large numbers of root- and leaf-lice. 
The Secretary read a paper communicated by Dr. Fritz Miiller, entitled 
“Notes on Brazilian Entomology,” in which the author gave the results of 
his observations on the odours emitted by butterflies and moths, as well as 
facts bearing on various other subjects more or less connected with the 
theory of Evolution. 
Mr. Meldola, in items of the foregoing paper, exhibited the wings 
of Antirrhaa Archea, showing the “ scent-fans” sent over from Brazil by 
the author of the paper, and likewise a specimen of Mycalesis Drusia, Cram., 
captured by himself in the Nicobar Islands in 1875, and displaying the 
“ scent-fans” of the hind-wings in a very couspicuous manner. 
The President remarked that when collecting on the Amazons he had 
often observed the strong odour of vanilla emitted by certain butterflies. 
Without a more complete examination of the evidence, however, he was not 
prepared to admit that the tufts of hair or manes on the wings, &c., of 
butterflies were the scent-secreting organs. 
Mr. Wood-Mason stated that no exception could be taken to Dr. Miller's 
view from a morphological standpoint, since the hairs, which are modified 
scales, are in communication with the fluids contained in the tissues of the 
wing, and thus might easily secrete odours. 
With reference to the odours emitted by other insects, Mr. M‘Lachlan 
remarked that when in Sydney he had found, in the bush round that town, 
a cockroach which gave out a most powerful smell. He also referred to the 
well-known odour of Chrysopa, which is emitted by two or three British 
species of the genus. No special scent-secreting organ has, however, as 
yet been detected in these insects. 
