38 



vectisana, Westw. 5—1 



jR. Adkin, J. W. M., A. Lofthouse. 



Socii broad, gently arched and tapered to a point set with 



short , stout hairs. 



Ostium rather narrow; ductus bursa? long, narrow. 



walsinghamana, Bankcs. 3—1 

 = geyeriana, 



Barr, Myk, nee Ban, Myk, nee H-S. 

 E. R. Bankes, J. H. Threlfall. 



Socii broad, acutely arched, emarginate to a point set 

 with fine, short bristles. 



Ostium rather narrow; ductus bursa; very short; 

 ostium leads almost directly into the bursa. 



permixtana, S.D. 



mussehliana, Tr. (Myk.) 

 W . Purdey. 



Socii broad, acutely arched, tapered to a point sel with 



fine, short bristles. 



Ostium small; ductus bursa) very narrow, lon^; the 



bursal circle of spines surrounded by a crinkled edge. 



V. OLETHREUTIDII. 



A small group Ilia! has been chosen to introduce a rather 

 (■(impact group, The valva is long, often set with Btrong 

 spines at the termination of the sacculus; transtilla often 

 fully developed. Uncus developed, hut generally weak; 

 socii large and drooping ^Edceagus cardinate, sometimes 

 bearing one or more cornuti, often without. 



The ovipositor is Battened, usually broad. Ostium 

 strong with large minutely spined plate. Signum sometimes 

 absent, generally one or two scobinate patches. 



