1 8 MOSLEY: YORKSHIRE PSYLLID^E IN 1877. 



by this. V/rite under the card the place and date of capture, 

 and the specimen is complete. 



LIST OF SPECIES TAKEN IN YORKSHIRE; 1877. 



Arytaena ulicis, Ctn-t. This must be common, though I 

 have only taken one specimen as yet; Castle Hill, Huddersfield. 



Psylla Forsteri, Flor. Woodsome near Huddersfield, 

 from alder. 



P. alni, L. Up to the publication of Mr. Scott's 

 monograph I believe a few specimens only had been taken by 

 himself and Dr. Power. It has since been taken freely near 

 Norwich, and I have taken it very commonly at Woodsome near 

 Huddersfield, and at Askern. 



P. fraxinicola, Fdrst. Common at Huddersfield. 



P. costal is, Flor. Common at Woodsome, Huddersfield. 



? P. peregrina, Fdrst. I sent this species to Mr. Scott under 

 the impression that it was P. mail; he however returned it- queried 

 peregrina, but said he had no doubt it would prove the latter 

 species. I took it at Askern in September, from a hawthorn 

 hedge. 



Trans.Y.N.U.,1877. Series D 



