81 



Among the objects illustrated and discussed were Mantis 

 religiosa, Euchloe cardamines, Phalera bucephala, Amphidasys 

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

 inachis, Liiiwas chrysippus and its mimic Hypolimnas bolina, 

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

 different forms of the female which mimic forms of Danais, 

 a wasp and Trochiliiun crahroniforniis, and the twig-like larvae 

 of Uropteryx smnbucata. 



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 2Sth, 1899. 



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



Mr. Ashdown exhibited specimens of both sexes of the 

 coleopteron Osphya hiptmctata, 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, i8gg. 



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 pahistris (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 Ma.y 2^rd, Libellula quadriinaculata,Cor- 

 didta anea, Calopteryx splendens, Erytkronnna naias, Pyrrhosonia 

 nymphida, Ischnura elef^ans, Agrion pidchelluni, Agrion puella, 

 and Enallagma cyathigerum ; but specimens were not nu- 

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



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