Besides these, the following species had better be regarded 

 as recorded in error, until confirmed by further undoubted 

 specimens : — 



Sesia apiformis, 



Nola strigula, 



Emmelesia taeniata, 



Phibalapteryx polygrammata, 



Hadena genista?. 

 Deleting these fifteen species will leave a net addition of 

 thirty-eight to the original list, or a total of 1379 for 

 Yorkshire. 



The new localities have largely increased our knowledge 

 of the distribution of many species in our county; and the 

 "light" traps used so systematically at Everingham b}' 

 Mr. J. Sumner have also proved that many species which we 

 formerly considered to be rare, are in reality quite common. 

 This method of capture had never been much worked io 

 Yorkshire until Mr. Sumner adopted it, and as it immediately 

 proved an irresistible attraction to many species which were 

 formerly comparatively seldom taken, the inference is, that 

 the same method of work would be equally successful in 

 other districts. When it is seen that such species as Litliosia 

 coiuphnnila, Paxilocanipa popiili, Notodonta dicffcoidcs, 

 Liipei'iiui ci'spifis, Tccnioca7npa opima, Cirnedia xcraDipcUuu^ 

 Petasia cassi'nea, Pericallia syriiigaria^ Eniwmos dugularia, 

 Nyssia hispidaria^ Amphydasis prodromaria, Timandra oma- 

 taria, Melanippc unangidata^ and many others, were taken 

 in abundance in the traps by Mr, Sumner, it will be at once 

 realised what a valuable adjunct this method of capture may 

 be made. Perhaps it is fortunate too that nearly all the 

 specimens taken at "light" are males, as the females are thus 

 left to deposit their eggs, and to perpetuate their species. 

 Why the females should fail to be attracted, except in 

 comparatively rare instances, is not easily accounted for, 

 but such is the case. 



Trans. V.N.U. Series I), Vol. z- Dec. 1903. 



