81 



Among the objects illustrated and discussed were Mantis 

 rcligiosa, Euchloe cardamines, Phalera bucephala, Amphidasys 

 betulavia (normal, extreme, and intermediate forms), Kallima 

 inachis, Limnas chrysippus and its mimic Hypolimnas bolina, 

 a Heliconins and its Pierid mimic, Papilio merope, male and 

 different forms of the female which mimic forms of Danais, 

 a wasp and Trochilium crabvoniformis, and the twig-like larvae 

 of Uropteryx sambucata. 



In the ensuing discussion it was generally considered that 

 much further observation on this subject was needed, espe- 

 cially by those who were qualified to fitly judge the facts 

 observed. 



MAY 25th, 1899. 

 Mr. A. Harrison, F.L.S., President, in the Chair. 



Mr. Ashdown exhibited specimens of both sexes of the 

 coleopteron Osphya bipunctata, from Huntingdonshire, shew- 

 ing also the two forms of the male — with and without the 

 incrassate hind femora. The forms of the two sexes of this 

 species are very distinct. The specimens were captured in 

 May, 1899. 



Mr. Lucas exhibited the following plants : 



Menyanthes trifoliata (the buckbean or bogbean), from the 

 quaking bog at the foot of Horseshoe Clump, on West End 

 Common, Esher. On May 13th the plants were only repre- 

 sented by a few odd leaves in a ditch ; on the 22nd of the 

 month not only was there a bed of foliage, but several 

 specimens were in blossom — a very rapid development. 



Hottonia palustris (water-violet). A somewhat scarce 

 plant, belonging to the Primulaceae, which was found in 

 one or two places near Byfleet on May 23rd. Thrum-eyed 

 and pin-eyed blossoms occurred as in the common prim- 

 rose. Numbers of small shells were clustered amongst its 

 submerged leaves. 



Listera ovata (twayblade), obtained near Effingham 

 Station, May 23rd. Some were very large : one plant was 

 in blossom. 



Mr. Lucas also reported the following dragon-flies, 

 noticed on or before May 23rd, Libellula quadrimaculata,Cor- 

 dulia anea, Caloptefyx splendcns, Evythromma naias, Pyrrhosoma 

 nymphula, Ischnura elegans, Agrion pulclicllum, Agrion puclla, 

 and Enallagma cyathigcrum ; but specimens were not nu- 

 merous. The season, he stated, was about three weeks 



7 



