73 



of Hubner's genus Eucosma, ccecimaculana is the only 

 British species representative of this genus. 



The chief feature is the socketed spine at fli« j 

 termination of the valva. 



Eucosma caecimaculana, Hb. 2 — 1 



Valva long, curved cygnate ending in a strong socketed 

 spine. Uncus atrophied, very slightly produced; socii 

 curved. /Edooagus narrow; cornuti narrow, long, 14-16. 



Ovipositor very narrow; ostium simple, with indent 

 collar. Signa pilleate. 



Genus 16. type 



The long drooping socii and deciduous cornuti seem to 

 connect up the following three species; hut we are by no 

 means certain they should be included in one genus as the 

 signa vary in number. 



resinana, L. B.Adkin. 1 — 1 



Valva with large cucullus, very deeply and widely 

 emarginate; sacculus produced inwardly in an angular plate. 

 Uncus articulated, but not produced, set with hairs; socii 

 long, drooping. iEdceagus cardinate, short: cornuti 

 deciduous, 5. 



Ovipositor flattened, wide. Ostium with wide plate set 

 at either side with three spines. Signa pilleate. 



posticana, Zett. 



Lady Robinson; H. W. Harwood. 



Valva short, constricted before cucullus, forming a wide 

 emargination below; sacculus produced to & point inwardly. 

 Uncus rudimentary, set with hairs; socii long, drooping. 

 .Edceagus cardinate; cornuti deciduous, 10. 



Ovipositor flattened, wide. Ostium with heavy plate; 

 ductus bursa* with thickened inside tube. Signum wide, 

 scobinate. 



