53 Proceedings of the Royal Irish Academy. 



As it occurs in Belgium and in the Channel Islands (Alderney), it may yet be 

 found Ii\iug in tliis country.] 



Erythromma najas (Hansem.). 



Ulster. 



TJ. — Down (" Covelake, June," Hcdiclay MS. ; " pris de Belfast, Haliday," 

 Dc Sdys, Eevue dea Odouates, 1850). 



Apparently a very rare species in this country ; and it has not been met 

 with in recent year's. The locality " Covelake," noted in Haliday's ^IS. 

 Catalogue, is rather indistinctly written ; but there can scarcely be any doubt 

 that it is meant for Cove Lough, some 1500 feet up on the Jlourne ]\Iountains, 

 near Slieve Donard, a district often visited by Haliday. At the same time 

 it should be pointed out that Ei^thromma najas is not an upland species in 

 Great Britain. We are indebted to Mr. 11. LI. I'raeger for indicating the 

 position of this little-known lake. 



Distribution. — Mr. Lucas reports E. najas as a very local insect in 

 England, ranging from Lincolnshire to Dorset. Abroad it is found from 

 Scandinavia and Finland (Xurmijarvi-See) to the extreme south-west of 

 Europe, penetrating eastwards into Siberia, 



Pyirhosoma nymphula (Sulz.) 

 MUNSTKK. CONNAUGHT. LEINSTKR. UlSTKR. 



M. — Kerry (Derrynane ; Waterville ; Deenagh Itiver ; Muckross). Cork 

 (Gleugarill"; Adrigole ; Castletown; Macroom; &c.). C. — Galway (Ross). 

 Mayo (Carrowbeg River). L. — AVe.xford (banks of Slaney ; Xew lioss ; 

 Johnstown Castle grounds ; " Ballyhyland, the commonest of our small 

 Dragon-flies, and always the first to appear and the last to linger. May 3rd 

 and October 1st are my extreme dates for it," Moffat, in Utt.). Wicklow. 

 Kildare (Maynooth). Dublin (Tallaght, &c.). Westmeath (Killucan ; Twy 

 Lough). Louth (Castlebellingham). U. — Monaghan (Emyvale). Armagh 

 (common). Donegal (Ardara and Foyle district). Down (Slieve Donard and 

 Annalong valley). Antrim (Ballinderry). Deny. 



Common in suitable localities. 



Distribution. — Occurs throughout Great Britain. Europe ; Asia Minor. 



Iflchnura pumilio (Charp.). 



CoNNAuoirr. Lkksteb. Ulster. 



C. — Galway (near Roundstone, 1908, Prae/jer). Mayo (Carrowbeg River). 

 L. — Wexford (Rosslare). U.— Down or Antrim (near Belfast, De Hcli/s, 

 " Revision," 1850). 



Rare. An Irish specimen, probably taken near Belfast, is in Mr. Haliday's 

 Collection, now preserved in liie National Museum in Dublin. 



