( XXX ) 



November 5, 1884. 



J. W. Dunning, Esq., M.i\., F.L.S., &c.. President, in the chair. 



Donations to the Library were announced, and thanks voted to the 

 respective donors. 



Election of a Member. 

 A. W. Kappel, Esq. (2, Burhngton Gardens, Chiswick, W.), was balloted 

 for and elected a Member of the Societ}^ 



Exhibitions, Sc. 



Mr. J. J. Weir exhibited, on brhalf of Mr. J. W. Douglas, Idiocerus 

 cognatus, Fieb. (I. distinyHe)idns, Kbm.), a species new to the British list of 

 Horaoplera, taken in September and October last from a white poplar tree 

 at Lewisham. It is distinguished conspicuously from I. trcmula, by its 

 constant paler coloration, by the broad central fascia on the elytra never 

 continned to the costa, and by structural differences. Specimens of Idiocerus 

 tremidcB were exhibited for comparison. 



Also the following CoccidcB, taken at Lewisham : — 



Lecanium ribis, A. Fitch : a quantity of the " scales " fixed to a shoot 

 of red/;urrant. These scales abound on the currant bushes in sheltered 

 situations, but no harm accrues ; they are rarely found on the w'ood of the 

 present year. 



Lecanium aisculi, Koll. : male imago, and male and female shell-scales, 

 from horse-chestnut. 



Lecanium aceris, auct. : male and female shell-scales, from sycamore. 



Lecanium coryli, Linn. : female shell-scales, from hazel-nut tree. 



Lecaninm genevense ? , Targ. : male and female shell-scales, from haw- 

 thorn. 



And hymenopterous parasites which emerged from the female scales of 

 the last four species, probably belonging to the genera Coccophagus and 

 Encgrtus. 



The " scales " of many of the species of Lecanium are very much alike, 

 as may be seen in those of L. cescuU and aceris, which may really be those 

 of only one species on different trees ; but others, such as L. ribis, are very 

 distinct in formation. In most cases satisfactory determinations of the 

 species are only to be obtained by prolonged observation of the sexes in all 

 the stiiges of life. 



Mr. A. S. Felton, who was present as a visitor, exhibited a large 

 collection of Lepidoptera and Hemiptera, containing many interesting 

 species, collected from 1875 to 1883 iu the province of Espirito Santo, 

 Brazil, by Bazilio Carvallo Daemon. 



