150 Lowe : Diptera of the Warrington District. 



Diptera as shall be of service in the elucidation of the life- 

 history and distribution of this order of insects. I have adopted 

 Mr. P. H. Grimshaw's style (Xat. , 1898, p. 89, etc.) as far -as 

 possible : those species which I first collected in the district, 

 and of which I have no exact data, are placed separately at the 

 end. Dr. Meade's authority is perhaps all that makes their 

 names worth publishing. 



MYCETOPHILID^E. 

 Sciara thomaz L. Chesh. : Bird Wood, Preston Brook, July 

 1897, common. 



BIBIOXID^. 



Dilophus febrilis L. Chesh.: Appleton Dingle, one swept 



from grass in Ma}' 1896. 

 Bibio reticulatus Lw. Chesh.: Lymm, common on laurels, 



April 1896. 



PTYC HOPTERIDiE. 

 Ptychoptera contaminata L. Chesh.: Moore, two swept from 



grass in August 1896 and two in July 1898. 

 Ptychoptera albimana F. Lane. S. : Rixton Moss, June 



1897, one from drain side. Chesh.: Moore, two swept 

 from grass in April 1897. 



TIPULIDiE. 



Pachyrrhina scurra Mgn. Lane. S. : Rixton Moss, June 

 1896, one. 



STR ATIOM YI DJE. 

 Sargus cuprarius L. Chesh.: Daresbury, June 1896 (var. 

 S. nubeculosus Ztt. ). 



tabanim:. 



Hsematopota pluvialis L. Common in July and August. 



Lane. S. : Rixton Moss. Chesh.: Whitley, Hatchmere. 

 Therioplectes tropicus Mgn. Chesh.: Hatchmere, 18th July 



1898, one o • 



Tabanus maculicornis Ztt. Chesh.: Hatchmere, 24th July 

 1898, one J . 



Chrysops csecutiens L. Chesh.: Whitley, 31st July 1S98, 

 common. 



LEPTID-E. 



Leptis scolopacea L. Lane. S. : Rixton Moss, May 1896. 

 Chesh.: Moore, May. 1896; Hatchmere, nth June 1899, 

 two g s. 



* Naturalist. 



