THE ENTOMOLOGIST. 253 



by migration, and in llie lapse of time has so multiplied 

 as to threaten its own extinction by the destruction of all the 

 timber which serves to support it. 



The best collecting-ground for the Lepido])terist at Kil- 

 larney will be Ibund on the bogs round the u))per lalio, 

 especially those under Cromaghlan Mountain and near Der- 

 rycunihy Waterfall, and in the woods which fringe them. 

 These bogs are mostly covered with a thick growth of Myrica 

 Gale and Calluna vulgaris, and in ordinary summers are firm 

 enough to be traversed safely in all directions. 



The following list com))rises a lew of t]ie most interesting 

 species which have been taken at Killarney : — Argynnis 

 Lathonia (Muckross), Melitaea Alhalia, Thecla Beluhe, Va- 

 nessa Antiopa (Loch Carragh), Sesia culiciformis (Cromagh- 

 lan), S. scoliaeformis (Cromaghlan), Lithosia aureola, Noto- 

 donta bicolor (Muckross), N. chaonia (Muckross), Bombyx 

 Calluna;, Geometra papilionaria, Acidalia rusticata and A. 

 fumata, Corycia temerata, C. tau)inata, Macaria notata, Seli- 

 doseraa plumaria, Sterrha sacraria, Dasydia obfuscata, Scoria 

 dealbata, Eunnelesia taeniata, Eujjilhecia arceuthala and E. 

 debiliata, Lobophora viretata, Acronycta Myricaj (Loch Car- 

 ragh), Noclua neglecta, Hadena rectilinea, H. contigua, Ca- 

 locampa vetusta, C. exoleta, Ophiodes Lunaris (at sugar 

 under Cromaghlan), Plusia Fesluca?, Bankia argentula, IJy- 

 drelia unca, Erastria fuscula, Hypena crassalis, Schraukia 

 turfosalis. 



The most interesting of the above-named insects, Noto- 

 donta bicolor, I have never been fortunate enough to capture, 

 though I have made several journeys to Killarney with that 

 object. A man is apt to suffer in fame if he finds a species 

 that cannot be discovered again, and something of this sort 

 was poor Bouchard's fate in connexion with his discover}' of 

 bicolor at Killarney. The capture of specimens of the insect, 

 both in the larva and imago state, during the summer of 

 1866, I am glad to say removes any ground of doubt as to its 

 truly indigenous character : all the specimens yet taken 

 have been beaten from birch trees on Muckross peninsula 

 early in June. That this conspicuous insect should be so 

 difficult to find appears strange, but it must be considered 

 that it is not common anywhere in Northern Europe, and 

 ihat the habits of the perfect Notodontidas are very retired : 



