698 TINEINA [cekostoma 



Larva attenuated towards extremities; feeding in a slight web 

 on leaves of trees and shrubs. The structure of veins 7 and 8 

 of the forewings varies within tho limits of the same species. 



1. Forewings with apex strongly falcate . . 2. 



„ „ not falcate . . .3. 



2. Forewings deep ochrcous-brown . . 2. xylostdla. 



„ whitish-ochroous . . 3. nemorella. 



3. Forewings with apex very strongly produced 1. cwudeUa. 



,, „ not strongly produced . 4. 



4. Forewings with scale-tufts on surfaco . . 5. 



„ without scale-tufts . . .7. 



">. Forewings wholly dark ferruginous-fuscous 6. horridella. 

 „ at least partly whitish . . 6. 



6. Forewings with dorsal half mostly dark fuscous 



5. scabrella. 

 „ ,, „ not dark fuscous 4. asperella. 



7. Head whitish . . . . .8. 



„ not whitish . . . .10. 



8. Forewings ochreous-whito . .12. sequella. 



„ pale or deep ochrcous . . .9. 



9. Forewings with blackish dot above tornus 10. costella. 



,, without such dot . . 7. hicella, 



10. Forewings with two transverse streaks . .11. 



„ without transverse streaks . .12. 



11. Streaks not reaching above middle . 8. alpella. 



,, nearly reaching costa . . 9. sylvella. 



12. Forewings with dorsum blackish . . 13. vittella. 



,, ,, „ not blackish . 11. radiaUlla. 



1. C. caudella, L. (? mucronella, Sc.) 2G-32 mm. Forewings 

 narrow, apex very strongly and acutely produced ; light brown- 

 ish-ochreous, with scattered black scales, veins obscurely 

 whitish; a dark fuscous streak along fold from base to beyond 

 middle ; sometimes other dark streaks between veins ; a raised 

 dark fuscous dot beneath fold before middle. Ilindwings pale 

 whitish-fuscous, 



5. England to Hereford and Norfolk, not uncommon j ('.and 

 S. Europe, Asia Minor; 8-4. Larva greenish-grey, marbled 

 with rosy-ochreous ; dorsal line whitish ; 3 and 4 with pairs of 

 black spots: on Eucmymus ; 6-8. 



2. C. xylostella, L. (hwrpetta, Sohiff.) 17-21 mm. Head and 

 thorax white, patagia deep brown. Forewings with apex very 

 strongly falcate; deep ochrcous-brown, lighter towards costa 

 anteriorly ; a light yellow dorsal streak from base to tornus, 



