89 



Mr, H. Moore exhibited a beetle, Geotmpes stercorarius, which had 

 been infested with mites and from which no fewer than 925 indi- 

 viduals of a Gajiiasiis sp. ? had been taken. 



A considerable discussion took place. 



MAY Uth, 1914. 



Mr. C. B. Williams read a paper on " The Thysanoptera," and 

 showed a series of lantern slides in illustration of his remarks, 

 together with a number of specimens exhibited under microscopes. 



Mr. C. Hocking exhibited branches of the common furze, Ulex 

 europceiiH, taken from Danbury Common, Essex, which had been 

 killed by the close web with which they were covered. The web 

 had been made by countless numbers of an extremely small mite, 

 said to be TetramjcJiKs lintearit(f<, which were still present. The 

 web was closely woven of very fine filaments, of a whitish colour 

 when fresh, but quickly becoming browmish-white. A large area 

 on the common was aftected by this acarid, the gorse being com- 

 pletely killed wherever it was attacked. 



Mr. Step said that he had met with webs of an allied species, 

 Tetranychus tiliannn, on the trunk of a lime tree at Mickleham, 

 where it had been sufficiently profuse to attract the attention of a 

 cowman, who had asked him to go and look at the tree. 



Mr. B. W. Adkin exhibited several aberrations of Culias edusa. In 

 one, a male, the outer margin was extremely pale, apparently with 

 very few black scales, most of the scales being of the ordinary rich 

 yellow, a combination which gave a most curious appearance. 

 Another specimen was about half the usual size. One example of 

 var. helice instead of being white was decidedly yellowish. 



Messrs. Blair, Edwards, Moore and Main exhibited various 

 species of luminous and reputed luminous insects, including 

 Photiniis pijvalis, Lamprorhiza splendidula, Lampyrk noctiluca, Pho- 

 tinus penmijh-aniis, Fnhjora lanternaria, Fnliinra candelaria, Zanna 

 terminal^, Pijrups ciiltellata, Hotiiiiis i/ifjantetis, etc., to illustrate a 

 paper on " Luminous Insects," read by Mr. K. G. Blair. (See 

 page 31.) 



Mr. Hy. J. Turner exhibited a copy of Madam Merian's " Meta- 

 morphosis Insectorum Surinamensium," 1726, in which is an illus- 

 ration of Ftihjora lanteniaria, showing various stages of growth. 



