MEETINGS. 65 



than in the syenite, and some of the pebbles in the sandstone 

 are of felsite. Moreover, the strata of the sandstone abut 

 against the syenite, so that the line of junction is probably a 

 fault, and the pressure which produced this fault may have 

 been accompanied by sufficient heat to bring about the 

 alteration of the sandstone and the small intrusive veins of 

 felsite. 



C. G. De La Mare, Sec. Geol. Sect. 



REPORT OF THE ENTOMOLOGICAL SECTION. 



During the present year several important additions 

 have been made to both the Guernsey and Alderney lists. 



In the report for last year I mentioned the capture of a 

 specimen of Papilio Machaon (the Swallow-tailed Butterfly) 

 for the first time in Guernsey. I have now to record the 

 capture of a fine specimen of the same species for the first 

 time in Alderney. It was taken by Mr. Spencer on Butes 

 hill on July 22nd, and Mr. E. D. Marquand saw it alive just 

 after its capture. It had most likely flown over from the 

 opposite coast of France. 



Lampides Boetica (the Long-tailed Blue), which was so 

 abundant in Guernsey in 1899, again appearing, although in 

 diminished numbers, last year, seems to have been altogether 

 absent this season, not a single specimen having been 

 observed or captured. Another Butterfly, Colias Edusa (the 

 Clouded Yellow), which was recorded in the report for last 

 year as exceedingly abundant in Guernsey, has been con- 

 spicuous by its absence. 



A fine specimen of Argynnis Lathonia (the Queen of 

 Spain fritillary) was seen, but not captured, on the cliffs 

 between Doyle's Monument and Moulin Huet Bay. On 

 October 13th the Rev. F. E. Lowe again reports the capture 

 of specimens of Vanessa Io (the Peacock Butterfly) in his 

 garden. 



Sphinx Convolvuli (the Convolvulus Hawk Moth) has 

 been excessively abundant ; a great number have been 

 captured hovering over their favourite flowers at dusk, 

 during August, September and October. I have also had 

 numbers brought to me which had flown into houses or had 

 been picked up on walls and posts in gardens; these were 

 in all stages of dilapidation. Although usually fairly common 

 in the perfect state, the larva and pupa of this species is 

 seldom found, but this season quite a number have been dis- 



B 



