135 



Argynnis aglaia, female. — Left fore-wing less than normal 

 size. Captured at Eastbourne, August 7th, 1891. 



A rgynnis aglaia, male. — Right hind-wing greatly reduced in 

 size and imperfectly pigmented. Captured at Brighton 

 July 14th, 1903. 



Ainphidasys betularia, female.— Left fore-wing angulated, 

 left hind-wing somewhat reduced in size. Bred, Lewisham, 



1909-. 



Psilura monacha, female. — Right hind-wing missing. Bred 

 New Forest, 1888. The insect emerged from pupa in this 

 condition. 



Agriades coridon, female. — Captured, Eastbourne, igog. 

 The left wing is split from near the base to close to the hind 

 margin, but the margin is not severed. A mark on the right 

 fore-wing is in a similar position, suggesting a damage 

 received while in pupa. 



A. bcllargus, female. — Captured, Eastbourne, igog. Margin 

 of right fore-wing indented, but the fringe is complete round 

 the indentation ; the dark marks in the fringe are, however, 

 fewer than on the corresponding perfect wing. 



Mclitcea artcmis, female. — Bred igog. Left fore-wing 

 dwarfed, somewhat angulated, and imperfectly pigmented. 



Boaruiia gemmaria, female. — Bred igog. Right fore- and 

 hind-wings shortened. 



Triphana comes, male. — Bred 1896. Both fore- wings with 

 squared hind margins. 



Tceniocampa opima, female. — Bred igog. Both hind-wings 

 greatly reduced in size. 



ZygcBua loniccrcc. — Captured, Chattenden, i8g2. Right 

 fore-wing imperfectly dev^eloped. The left fore-wing has 

 confluent spots. 



Z. achillcce, — Both fore-wings club-shaped. Captured, 

 Morven, igo8. 



Dr. Chapman exhibited a large number of teratological 

 specimens of Lepidoptera, lent him by Mr. Tutt, Mr. 

 Pickett, Dr. Hodgson, and others, to illustrate his paper, 

 together with microscopic preparation, plates, and excerpts 

 from various Society transactions, and the work " Coleop- 

 teres abnormaux," by Mr. Bourgeois, of Rouen. 



He then read his paper, " On Insect Teratology " (see 



P- 39)- 



NOVEMBER lOth, 1910. 



Mr. W. G. Sheldon, of Croydon ; Lieut. H. T. Stoneham, 

 of Streatham ; Mr. A. J. Lawrence, of New^ Oxford Street; 



