i8o Ihe Irish Naturalist. September, 



THE AQUATIC COLEOPTERA OF WEST DONEGAL. 



BY FRANK BALFOUR BRQWNK, M.A. (OXON.), F.R.S.K., F.Z.S. 



The published records of water-beetles for the vice-county 

 of West Donegal produces, so far as I can find, a list of about 

 27 species, but in my researches on the distribution of the 

 group I have seen a number of species in the collections of 

 several entomologists, and in that of the National Museum, 

 Dublin, and I have also made one excursion to the north- 

 west, so that ni}^ list now runs to 66 species. 



The absence of entomologists at the Conference was un- 

 fortunate, as the only water-beetles collected were taken by 

 Messrs. R. Welch nnd A. W. Stelfox who, in the course of 

 their own work, very kindl}' kept for me an}- specimens they 

 came across. They collected altogether 23 species and added 

 two {Agabiis chalconotus and Ilybiiis ccnescens) to my list. 



Since so mau}^ captures in the vice-count}- have not 3'et 

 been put on record the present seems a good opportunity for 

 publishing a full list of species, and with the consent of those 

 responsible for the Conference publications, this is here done. 

 I am largely indebted to the Rev. W. F. Johnson and Mr. R. 

 Welch, to the former for allowing me to see all his water-beetles, 

 and to the latter for sending me from time to time specimens 

 taken by him during his visits to the vice-county, and in the 

 following list I have given the localities in which species were 

 taken, and also the name of the collector, except where I took 

 the species myself I have added at the end of the paper a 

 bibliography of the only ptiblished lists I have been able to 

 find. 



Haliplus obliquus, F.— Dunfanagliy and Carrickfin (190S). 



H. conflnis, vSeph. — Dim fauagliy (1908). 



H. flavlcollis, vStunn.— L. Salt Mountaiiii (Dublin Mus. Coll.). 



H. fuJvus, P\—Dunfauagliy and Carrickfin (190S). 



H. ruficollls, De G.— Ardara (W. F. J., 1S92) ; Dunfanaghy and Car- 

 rickfin, (190S) ; Rosapenna L. ("R. W., 1910). 



H. Ilneato-collis, Marsh. — Ardara (W. F. J., 1892); Dunfanaghy and 

 Carrickfin (1908); near L. vSalt (R, W., 1910). 



Notcrus sparsus, Marsh. — Tawney (DuMin Mus. Coll.). 



Laccophilus obscurus, Pauz. — Carrickfin (1908). Rosapenna L. 

 (R. W., 1909) ; Melmore \^. (A. W. S., 1910). 



1 I think that most, if not all, of the L. vSalt, Tawney and Milford water- 

 beetles in the Dublin Museum collection were taken in 1906. 



