4 PRESIDENT’S ADDRESS. 
which, from its habit of sitting on the upper surface of the leaves 
of low plants, especially those of Mercurialis perennis, presents so 
conspicuous an object to the most careless passer by. So abun- 
dant was the insect that it might almost be said there was one 
to every square yard of ground where the Mercurialis grew, and 
amongst them a very remarkable variety was found nearly 
approaching the Ab. pantaria of southern France. A little 
further on, specimens of the common spring butterfly, the 
“ orange-tip,” Anthocharis Cardamines, were captured in fine con- 
dition, proving beyond doubt how very late the season was, and 
in many parts the hawthorn was in full bloom, and lilies of the 
valley in flower. Proceeding onwards towards the sea the usual 
plants of the dene were observed, but those of the rare Elecampane, 
Inula Helenium, which grew by the road side, had disappeared, 
most probably destroyed by the passing of carriages, as no one 
would think of removing a plant like this. A few of the “ fly 
orchis,” Ophrys muscifera, were seen in the dene, and consi- 
derable numbers on the sea banks. The Micro-lepidoptera were 
so scarce that hardly a dozen were disturbed during the whole 
day, and those of the most common species; and the MJacro- 
lepidoptera, with the exception of Abraxas ulmata, equally so. 
Even the usually ubiquitous Melanippe montanata and Larentia 
didymata were extremely scarce; and the search for the rare 
Emmelesia teniata, one of our very local species, was unsuc- 
cessful. Single specimens of the butterflies Meliteaa Euphrosyne 
and Hesperia Sylvanus were captured further down, and near to 
the sea a few of the “ Wall” Butterfly Satyrus Megera, and of 
the males of the “common blue” Polyommatus Alexis, but 
nothing was seen of the interesting ‘‘ Durham Argus,” or of 
the rare Thera simulata, both of which in an ordinary season 
would have been on the wing. <A few Coleoptera were captured, 
including several specimens of our northern species, Zelephorus 
cyaneus (of Curtis), and Pyrochroa rubens (one of which had the 
anthers of some orchid attached to its head, which I should 
rather regard as an accident than agree with Mr. Darwin’s 
notion, that this was a particular insect required to fertilize some 
particular species of orchid). Otiorhynchus atro-apterus, Cronus 
