Clare Island Survey. 



31 

 ORTHOPTEKA. 



By GEOEGE H. CARPENTER, B.Sc, 

 Professor of Zoology in the Royal College of Science for Ireland. 



Read June 24. Published September 7, 1912. 



The collection of Earwigs and Grasshoppers from Clare Island and the 

 neighbouring mainland has served to do little more than make known the 

 presence of a few common and widely spread species of an order which is not 

 strongly represented in the British Islands as a whole. Excluding the 

 obviously introduced Common Cockroach {Blatta orientalis), found in the 

 outhouse on Clare Island which served the naturalists as a laboratory, the 

 following list includes one species of Earwig, the House Cricket, and four 

 Grasshoppers. All of these, with one exception {Mecostethus grossus), are found 

 on Clare Island as well as on the mainland. 



LIST OE SPECIES. 

 GKYLLIDAE. 



Gryllus domesticus, Linn. 



Clare Island, not uncommon (Praeger). Doubtless also on neighbouring 

 mainland. 



The House Cricket is probably widespread in rural districts of Ireland, 

 though there are very few specimens of it in the National Museum. In towns 

 it seems to be easily driven out by competition of the Cockroaches. It ranges 

 widely over Europe, and North Africa, which is believed by Burr to have been 

 its original home. 



ACEIDIIDAE. 



Tettix bipunctatus (Linn.). 



Clare Island (P. H. Grimshaw), July, 1910. 



Louisburgh, May, 1909 ; Castlebar, June, 1909, and July, 1911 

 (Halbert). 



WtOC. R.I. A., VOL. XXXI. A 31 



