66 DUBLIN UNIVERSITY 



Chatham is situated on the chalk, and therefore a very favourable 

 locality for meeting with many local species, as the results of my col- 

 lecting expeditions proved. 



My principal hunting-grounds were some oak woods, called Chat- 

 tington Roughs, belonging to the Earl of Darnley. The undergrowth 

 is very thick, but the woods are traversed by wide paths, and in many 

 places there are large clearings, caused by the undergrowth being cut 

 down for hop-poles. These clearings abounded with Crataegi, Sibilla, 

 W Album, and other species. The soil consists of a damp, tenacious 

 clay, so as apparently to be quite unfit for the transformation of larva 

 in it. This may account for the fact of my never having found any 

 pupae in the neighbourhood of Chatham, although I tried to be persever- 

 ing in the search for them. 



I shall now proceed to enumerate the species that I met with, 

 omitting the very common ones which occur everywhere. The nomen- 

 clature adopted is that of Stainton's " Manual of British Butterflies and 

 Moths," 1857. 



Rhopalocera. 



Papilio machaon. — A specimen was taken by Mr. Channy on the top of a 

 chalk hill. Towards the close of the summer I saw it in fine con- 

 dition. How could it have strayed so far from its haunts ? 



Gonepteryx rhamni. — Abundant. 



Colias edusa. — I had the pleasure of seeing, but did not capture, this 

 insect. 



Colias hyale. — I took a fine pair in a clover field on the side of a preci- 

 pitous chalk hill. 



Aporia cratcegi. — This fine insect is pretty abundant in the woods in the 

 beginning of June, but from the strength and rapidity of their flight 

 they are difficult to capture. (I took about twenty.) 



Leucophasia sinapis. — This insect I did not take myself, but have seen 

 specimens captured in the neighbourhood. 



Arge galathea. — Very abundant, but local. 



Hipparchia semele. — One or two specimens in the same field as C. hyale. 



Lunenith Sibilla. — This beautiful species occurred in considerable 

 numbers along the edges of a clearing, which was almost the only 

 place I met with them. It is really delightful to watch their grace- 

 ful easy flight, as they float about on the bright sunshine of a 



