( vi ) 
and one Danais (jdexippus, an American species which had 
recently extended its range in so extraordinary a manner) ; 
these three genera being fairly well represented in the warmer 
parts of Australia. Mr. "Walker stated that in three months' 
collecting in the middle of summer he was able to obtain only 
fifteen species. Similarly, ten days collecting in South- West 
Australia, under most favourable conditions, produced only 
seven species ; although the flora of the locality was 
exceedingly rich and showy. New Zealand has only some 
twenty species, several of which, e.g., Diadema bolina and 
Danais ijlexipious are immigrants, and Fyrameis cardui, an 
insect of all but universal distribution, exists there in a very 
slightly modified form. Turning to South America, Chili, 
although extending over more than thirty degrees of 
latitude (from the Tropic to the Straits of Magellan), 
and presenting every varieties of climate and altitude, has 
but a poor butterfly fauna as regards number of species. 
In the region of the Straits of Magellan, the latitude of 
which corresponds to that of the south and centre of England, 
we meet with only five or six butterflies in all, and even these 
are not all found in Tierra del Fuego. The smaller islands 
in high southern latitudes are almost entirely destitute of 
butterflies. Possibly two species, a Vanessa and an Argynnis 
(the former being perhaps the universal Fyrameis cardui), 
occur in the Tristan d'Acunha group (c/. Moseley, 
" Notes by a Naturalist on the ' Challenger,' " p. 134, ed. I.), 
but, as far as he was aware, none are recorded from the 
Marion and Crozet Islands, Kerguelen Island, or from the 
scattered islands to the south of New Zealand. 
Mr. M. Jacoby said he wished to draw attention to the 
apparently well-marked peculiar fauna of Central America, 
at least, as far as the Coleoptera are concerned, and to the 
fact that but few species of either North or South America 
penetrated the above region, although he was not aware of 
any obstacle or natural boundaries (unless it were the 
Northern sandy plains) which would prevent the mixing 
of the species throughout the American continent. 
Mr. Elwes remarked that the chief object of his address 
had been to endeavour to ascertain from Entomologists 
their opinions as to how far the rules as to the Geographical 
