THE ENTOMOLOGIST. 



Vol. LIII.] OCTOBER, 1920. [No. 689 





ARICIA MEDON, Ab. 



The above figure represents an unusual aberration of Aricia 

 medon that I captured on Royston Heath on August 9th last. 

 It was sitting on a blade of grass. — G. H. Simpson Hayward ; 

 Stow-on-the-Wold. 



THE MACRO-LEPIDOPTERA OF COUNTY TYRONE. 

 By Thomas Greer. 



This comparatively large county has been but imperfectly 

 explored by the entomologist. 



In March, 1882, the late Mr. Wm. F. de Vismes Knne,D.L., 

 commenced the investigation of the local lepidoptera at the fine 

 old demesne of Favour Royal and about the wild glen of Alta- 

 diawan, on the slopes of Slieve Beagh mountain on the southern 

 boundary of the county. 



The results he obtained in this district were published in 

 1883,* and afterwards formed the basis for his ' Catalogue of 

 the Lepidoptera of Ireland,' which first appeared in serial form 

 in ' The Entomologist.' The more noteworthy of his captures 

 here (many of which do not seem to occur elsewhere in the 

 county) include the following: Sarrothripa revayana, Acronycta 

 megacephala, Xylophasia sublmtris, X. hepatica, Oirhodia ligida, 

 Venusia cambrica, Perizoma Ueniata, Eupithecia indignta, E. 

 distinctaria {Thymus serpyllum is unknown in the county), E. 

 lariciatd, E. haworthiata, Lobophora halterata, iind. E idype hastata. 

 My own observations are confined to the east of the county, 

 within a nine miles radius of the town of Cookstown. I am 

 also much indebted to Prof. J. W. Heslop Harrison, of Armstrong 



* '• Keport on the Entomology of certain districts in Ulster," ' Proceedings of the 

 Eoyal Irish Academy,' June, 1883. 



ENTOM. — October, 1920. u 



