128 



the British Isles," and ilhistrated his notes with numerous lantern 

 slides (Printed on page 26.) 



Mr. W. J. Ashdown exhibited a n amber of lepidoptera taken by 

 him in Switzerland in June and July, 1913, including Arni/nnis- 

 niobe var. erh, Brenthis daphne, Chnjsophanns hippotJin'e, Krehia 

 sti/gne, Klugia spini, Nordiiiannia acacm, about a dozen species of 

 "blues," NeniopJiila plantafjinis var. hospita, Rhodostrophia vibkaria,. 

 and Tin/ 1 is fenestrella. 



Mr. Colthrup exhibited a snail-shell, Helix rir/jata, from which 

 he had bred a dipteron, no doubt; a parasite on the snail. This 

 was afterwards named by Mr. Wainwright as Oiiesia [Melinda) 

 cognata, Mg. 



Mr. H. W. Andrews exhibited two females of Syrp/ms giittatiis,. 

 Fin., a scarce dipteron taken at Bexley on August 4th. 



Mr. E. Step exhibited living examples of the ant-nest isopod, 

 Platgarthriis hofuianneggii, found in the nest of Formica fiisra, in 

 his garden at Ashtead. First determined as British about 55 

 years ago, it was long considered to be very rare and restricted 

 to the nests of a very few species of ants. Wasmann, however, 

 records finding it in connection with seventeen species, and in this 

 country Donisthorpe has found it in the nests of about a dozen 

 species. I am not at present sure whether Ashtead is a new 

 locality, but Donisthorpe has found it certainly as near as Box HilL 

 Stebbing refers to it as "slow-moving," but the specimens 

 exhibited will demonstrate that this is scarcely correct. The- 

 ant appears to treat it with indifference, but the isopod apparently 

 respects the ant and avoids getting in its way. 



Mr. W. West, L.D.S., exhibited enlarged photos of Platgarthnis,. 

 showing dorsal and ventral aspects, from specimens provided by 

 Mr. Step. 



Mr. Curwen exhibited specimens of Syntoniis pliegea and its var. 

 pflueweri, in which the white spots of the forewings are much 

 reduced in size and only five in number, from Pallanza and Iselle, 

 at the southern side of the Simplon, together with living larv<B of 

 the species. He also showed specimens of Xaclia ancilla from the 

 same locality. 



Mr. Newman exhibited long series of picked forms of Melitaa 

 aiirinia, bred from County Clare, Ireland, showing considerable 

 minor variation, but, considering the number bred, only a very small 

 percentage was aberrant. A few larvfe were taken from every nest 

 met with, so that the range of broods was somewhat extensive. 

 A similar exhibit was made of Scotch specimens from Oban, 

 showing similar results. 



