79 



(Ikm s 6. Rhyacionia Hb. typh buoliana. Schif. 



IMiis genus is capable ol being divided intu Beveral 

 genera. It will be seen we have included citrana in it. 

 The male, and signs of the female, suggest a close affinity, 

 but it will be noticed that the ovipositor shows a strong 

 difference, due to peculiarity of oviposit ion. A parallel case 

 may be seen in the species incertana oi' the Cnephasia group. 

 The way in which the species of this large group run into 

 each other only to drift away and return requires many 

 connecting links before a satisfactory classification becomes 

 discernible. F N.P. differentiated the firsl and third species 

 in the " Entomologists Record " for L909, Vol XXI., p. 3, 

 ;it the request oi ]•;. f{. Bankes and proved conclusively thai 

 there were two species. 



Valva more o>- less cardinate, indent below the cucullus; 

 Uncus atrophied; socii reduced to mere pads. JSdoeagus 

 cardinate, irregular in formation, often dentate. Cornuti of 

 such diversity as to suggest different genera. 



Ovipositor (except in citrana) flattened, angular; 

 cornuti very irregular, embracing other genera. 



Rhyacionia buoliana Schif. 4 — 3 



E. 11. Bankes. 



Valva stumpy, inwardly curved along the costa, emarginate 

 below the cucullus on the outer margin. Uncus rudimentary, 

 the tegumen forming two slight projections: socii lound 

 hairy pads. .T'.do'agus cardinate, ending in obtuse point. 

 Cornuti four, not deciduous. 



Ovipositor flattened, angular. Ostium wide; ductus 

 bursa' short. Bursa delicate, without signa. 



Rhyacionia pinivorana, Z. 2—2 



IF. Mansbridge; A. Lofthouse. 

 Valva stumpy; cucullus roundly pointed at the anal angle, 



