REPORTS. 123 



Aldemey. 



An excursion to Alderney was made in July. The coast 

 West of Essex Castle was visited. The rock is rather coarse 

 sandstone dipping 30° East of South at an angle of 30°. The 

 most noticeable feature was a mica trap dyke in La Chue 

 sandstone quarry on the South coast, which dyke is about 

 3 feet wide and nearly vertical, its direction being 22° East of 

 South. Although it belongs to the mica trap series, mica is 

 not so abundant as in the generality of these dykes. The 

 rock is chiefly felspathic, and has a vesicular structure which 

 appears to be due to the inclusion of gases in the process of 

 formation, the cavities being rounded and not angular as 

 would result from the removal of crystals by solution. 



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



REPORT OF THE ENTOMOLOGICAL SECTION. 



Although the past season has not been a very favourable 

 one for the collection of insects, we have been able to add 

 sixteen species to the Guernsey list. 



I have no record of the occurrence of Colias hyale or 

 edits a, and Sphinx convolvuli which was so abundant last year 

 has scarcely put in an appearance ; I know of only two 

 captures. 



Melitcea cinxia (the Glanville Fritillary) was not so 

 abundant as usual, and was on the wing unusually late, I saw 

 a number of them at Saints' Bay on July 13th. 



The Rev. F. E. Lowe has again bred specimens of 

 Diaiithcecia capsophila, these emerged on May 25th. He has 

 also been successful in rearing that local moth Heliophis hispidus. 

 Two pupce were found in the spring of 1901, and the perfect 

 insects emerged and paired in the breeding-cage. Eggs were 

 laid on September 25th, and hatched on October 5th. The 

 larva fed up on grasses and became pupce at Christmas. The 

 perfect insects commenced emerging on August 2nd, and 

 fourteen emerged between that time and October 5th. The 

 remaining pupce are alive and appear to be lying over until the 

 spring. 



A fine specimen of that rare and handsome beetle Calosoma 

 sycophanta was captured by Miss M. Le Messurier, of 

 Hauteville, on July 13th. It flew into her bedroom window 

 in the evening, probably attracted by light. 



Canon Fowler in his " British Coleoptera " says : — " This 

 beautiful species is not really a native, but only an occasional 



