THE DirTERA OF GUERNSEY. 59 



MYCETOPHILIDJ2. 



Sciara Thomse, L. Several taken in Guernsey ; one in Alderney, August 



6th, 1892. 

 Platyura marginata, Mg. One in a house in Mansell Street, June 12th, 



1892. One near Perelle Bay, June 12th, 1895. I have also taken a 



species of Platyura very similar to marginata, but much larger. It has not 



yet been determined. 



BIBIONID.E. 

 DilopllUS febriliS, L. Common. 



Bibio Marei, L. (St. Mark's Fly). Usually very abundant during May. 

 B. hortulanUS, L. Not common. 



CHIRONOMID^]. 

 Chironomus plumosus, L. The larvae abundant in stagnant water. 



CULICID.E. 

 Culex annulatus, Schrh. Common. 



PTYCHOPTERID^E. 

 Ptyehoptera paludosa, Mg. One taken on June 18th at Petit Bot. 

 P. albimana, F. Not uncommon. 



LIMNOBID.E. 



Limnobia nubeculosa, Mg. Common. 



Erioptera fuseipennis, Mg. Abundant on June 18th, 1895, at Petit Bot. 



E. trivialis, Mg. Common. 



Limnophila ferruginea, Mg. 



TIPULID^]. 

 Paehyrrhina histrio, F. Common on l'Ancresse Common, May, 1895. 

 P. maculosa, Mg. One taken near Vazon. 

 Tipula ruflna, Mg. Not uncommon. 

 T. lateralis, Mg. Common. 



T. gigantea, Schrh. Not uncommon, Petit Bot and Saints' Bay. 

 T, Oleraeea, L. Very abundant. 



RHYPHID^E. 

 Rhyphus fenestraliS, Scop. One specimen, July, 1895. 

 STRATIOMYN.E. 



Nemotelus nigrinus, Fin. July. 



SargUS CUprarius, L. Petit Bot in July, not common. 

 Chloromyia formosa, Scop. Common in June and July. 



Mieroehrysa polita, L. 



Beris Morrisii, Bale. One taken in Guernsey and one in Sark. 



TABANID^]. 



Hsematopota pluvialis, L. 



Tabanus autumnalis, L. Three specimens taken during July and August. 



ChrysopS executions, L. One specimen taken at St. Sampson's. 



