1901.] 2ia 



Ceromasia {Dexodes) machairop-sis, B. and B. — I have nine males from West 

 Runton, Norfolk, which I think are this species ; they certainly have a most de- 

 cidedly serrate ridge on the under-side of the abdomen, which is the main character- 

 istic of the species. C. (/).) stahulans, Mg.^— a common species, occurred at West 

 Runton, and Selsley, Grlos. C. {Paraphorocera) senilis, Mg.— common at West 

 Runton ; this seems to be one of our most generally distributed species, as I find it 

 in every lot of Tachinidcc I have to name. 



Nemorilla notahilis, Mg. — common at West Runton. 



Epicampocera succincta, Mg. — a pair at West Runton. 



BlepJiaridea vulgaris, Fall, -a universally common species; West Runton, 

 Sutton Coldfield, and Selsley, Glos. Brauer makes six species of this, and places 

 them in six sub-genera. I cannot at present, however, find any constant characters 

 by which my fairly rich material can be separated, though many of the differences 

 occur upon which Brauer bases his separations. They vary much in the size of the 

 antennae, length of second joint of arista, number of facial vibrissse, number of 

 dorso-central thoracic bristles, &c. ; but every combination of variations seems to 

 occur, and if I separated them at all it seems to me that I should have to further 

 increase the number of species. 



Bothria {Setigena) ccss/frojw, Macq.— one of our very coranaon species; last 

 year T only found it at Selsley, Glos. 



Chwtolyga quadi-ipustulata, Fall. — another common species ; common at West 

 Runton. According to Schiner, my specimens would be eri/thrura, Mg., as they 

 possess macrochetse on the first abdominal segment ; but in my series there is a 

 great deal of variation in the size of the pair on the first segment, and in the 

 number of those on the second segment, so that erythrura is probably only a 

 frequent form of quadripustulata, and the presence or absence of the macrochetse 

 on the first segment of no specific importance. 



Chatotachina rustica, Mg. — West Runton. My specimens of this species vary 

 so much in rather important particulars, that these may prove to be uiore than one 

 species, in which case tlie West Runton specimens may have to have another name. 



Thelymorpha vertiginosa, Mg. — several at West Runton. 



Aporomyia dubia, Fall. — one of our commonest species, occurred last year to 

 me at Selsley and Chalford, Glos. 



Melanota volvulus, F. — West Runton. 



Hyria tibialis, Fall. — one female, Chalford, Glos., which is almost certainly 

 this species. 



Macquartia tenebricosa, Mg. — West Runton, and Chalford, Glos., one speci- 

 men at each place. 



Ptilops chalybeata, Mg. — Selsley, Glos. 

 ' Thelaira leucozona, Pz. — a common species, common at West Runton. 



Myobia, sp. ?. — from Selsley, Glos. The specimens I have of this genus are so 

 variable that they would do for several species. I should not be surprised to find 

 that they were all one, and t\\a,t pacific a, Mg., and other species would have to sink 

 as synonyms of inanis, Fall. 



