APPENDIX. 183 



Several species included in the List are probably not really 

 indigenous to the county. There can be no doubt, I think, 

 that Bo??ibyx neustfia, although recorded from three localities, 

 was in every case introduced from the South. The eggs being 

 deposited in rings around the twigs of fruit and other trees, 

 would thus be easily conveyed from Southern nurseries. Sesia 

 myopcEfonnis was probably taken to Sheffield in apple trees ; 

 and Eupithecia sobrinaia to York on junipers in the same way ; 

 and possibly the presence of several other species in unlikely 

 localities may be thus accounted for. 



In conclusion, I must again express my thanks to Messrs. 

 William Warren of Cambridge, and John Sang of Burton-on- 

 Trent (formerly of Darlington) for the trouble and care they 

 have taken in going over the proof sheets of the Tortrices and 

 Tinese ; without their assistance several errors in these two 

 orders would inevitably have crept in. 



G. T. PORRITT. 



HUDDERSFIELD, 



December^ 1883. 



