117 



made some interesting remarks thereon, expatiating upon the 

 advantages of studying the Phytophagous Hymenoptera. A 

 discussion ensued in which Messrs. Step, Barrett, Weir, and 

 others took part. 



AUGUST lotk, 1893. 



J. Jenner Weir, Esq., F.L.S., etc.. President, in the Chair. 



Mr. Frohawk exhibited a specimen of Macroglossa bomby- 

 liformis, Och., together with the species of humble bee 

 {Bombus agrorum), which it mimics, both being captured in 

 company over rhododendrons in the New Forest on the 

 2ist of May, 1893. 



Mr. Oldham exhibited specimens of Apamea ophiogramma, 

 Esp., Calymnia affinis, L., and Triphcena fimbria, L., from 

 Woodford. 



Mr. Jenner Weir exhibited some cases which had been 

 found under a sycamore by a neighbour of his, Mr. Tolhurst, 

 at Beckenham. He said that attention had been called to 

 these cases by seeing them hopping over a gravel track, a 

 power which they retained for some days after they were 

 obtained. The cases were circular discs about 13 mm. in 

 diameter, and had been made from the upper cuticle of the 

 sycamore leaf, forming one side, and silk the other. Upon 

 examining the leaves of the tree, the round spots from which 

 the cases were partly formed were plainly visible, and also 

 the large blotch from which the larva had eaten the paren- 

 chyma. It was at first thought that they might be lepi- 

 dopterous, and probably a species of Tischeria ; but they 

 were ultimately identified by Mr. McLachlan as the work of 

 a saw-fly Phyllotonia aceris, Kaltenbach, a somewhat detailed 

 life-history of which species is given by Charles Healy in the 

 Ent. Mo. Mag., iv., pp. 105-107 (1867), and a more complete 

 account by Ritzema Box in the TijdscJirift voor Eiitomologie, 

 xxv., pp. 7-16, pi. iii. 



Mr. Weir also exhibited nearly adult larvae oi Henierophila 

 ahruptaria, Thnb., and drew attention to the fact that the 

 pair of prolegs were as usual in geometers fully developed, 

 and that there were also two other imperfect pairs in front 

 of these. He considered these very imperfect prolegs to be 

 vestigial. 



Mr. Robert Adkin exhibited a specimen of Sesia asilifonnis, 

 Rott. { = cynipiformis, Esp.), that he had reared from pupa 

 received from the neighbourhood of Abbott's Wood, Sussex, 

 and pointed out that the colour of the band on the left fore- 



