804 MICROPTERYG1NA [MICROPTKRYX 



less than . Fovewiugs rather elongate, pale shining golden, 

 Btrigulated and spotted with purple, veins posteriorly purple ; a 

 rather indistinct transverse dorsal spot of ground-colour before 

 tornus, not reaching half across wing ; cilia light grey ; 9 

 absent. Hindwings grey, towards apex purplish-tinged. 



Britain to Sutherland, common ; NC. Europe ; 4. Larva 

 whitish; head whitish, mouth pale brown; 6-11 with small 

 projections : in blotch in leaves of birch ; 5. 



4. M. Kaltenbachii, Stt. 9-11 mm. Head fuscous, some- 

 what mixed with grey-whitish. Antennae J. Forewings elon- 

 gate, pale shining bronzy -golden, more or less suffusedly 

 strigulated or sometimes almost wholly suffused with reddish- 

 purple ; a rather indistinct subtriangular dorsal spot of ground- 

 colour before tornus, not reaching half across 'wing; cilia 

 bronzy-grey; 9 absent. Hindwings grey, towards apex purplish- 

 tinged. 



5. England to Essex and Hereford, local ; Belgium, Germany; 

 4. Larva whitish ; head pale brown, mouth darker ; two 

 greyish-tinged marks on 2; 6-11 with minute projections: in 

 blotch in leaves of hazel ; 5. 



5. M. semipurpurella, Stph. (inconspicuella, Wood) 10-15 

 mm. Head grey. Antennae ^. Forewings elongate, bronzy- 

 purple, more or less sprinkled with pale shining golden; an 

 indistinct usually small transverse pale golden dorsal spot 

 before tornus, sometimes almost obsolete ; cilia bronzy-grey, on 

 dorsal spot ochreous-whitish ; 9 absent. Hindwings with hair- 

 scales except towards margins posteriorly, bronzy -grey, pos- 

 teriorly purplish-tinged. 



Britain to the Shetlands, E. Ireland, common ; N. and (J. 

 Europe ; 4. Larva whitish ; head pale ochreous-brown, mouth 

 darker : in blotch in leaves of birch ; 5. 



6. M. Sangii, Wood. 11-12 mm. Head whitish -grey-ochreous, 

 more or less mixed with dark fuscous. Antennae |. Forewings 

 elongate, bronzy -purple, with more or less numerous pale 

 shining golden irregular spots ; a subtriangular pale golden 

 dorsal spot before tornus, reaching half across wing; cilia 

 bronzy-grey, on dorsal spot ochreous-whitish ; 9 absent. Hind- 

 wings bronzy-grey, towards apex purplish-tinged. 



S. England to Herts and Hereford, Durham (?), local ; not 

 recognised elsewhere ; 4. Larva grey ; head black, centre and 

 mouth brown ; 2 with two groups of black spots : in brownish 

 blotch in leaves of birch ; 5. 



7. M. unimaculella, Zett. 9-11 mm. Head fuscous, mixed 



