Oiil NEW BRITISH DIPTERA. 235 



alpine forms of lonicerce. It would seem, then, that the true 

 position of cluhia, Staud., is not definitely determined at present; 

 it may be either a form of trifolii or of lonicerce, but, at the same 

 time, it is connected by intermediate links with Jilipenchda. It 

 is larger than typical trifolii, has either five or six spots, and 

 the hind wings are broadly bordered with black. Our five- 

 spotted filipenclul(B appears to fit in here ; and is, I think, really 

 referable to dubia, Staud. 



ON NEW BRITISH DIPTERA. 

 By G. H. Vekrall, F.E.S. 



Writing in the ' Entomologist' last year (Entom. xxiii. 154) 

 concerning British Diptera, I said, "A va^t amount of work 

 remains yet to be done, but it had better be done with caution." 



I was very much interested in Mr, Billups' account of the 

 Entomology of Oxshott in your last number (Entom. 201 — 204) ; 

 but before incorporating any fresh species into the list of British 

 Diptera, I preferred to act upon my own observations, and 

 consequently wrote at once to Mr. Billups to ask if he would 

 kindly let me see the more interesting specimens. I am very 

 much obhged to him for placing them in my hands the next 

 day, but I am sorry to say that the result has confirmed me in 

 my decision to act upon my own observations. 



Oxycera terminata, Mg. — I believe Mr. Dale's specimens of 

 this species will confirm it as British ; but all three of Mr. 

 Billups' are Pachygaster leachii, Curt. 



Pipuncidus genicidatus, Mg. — I believe I possess this, and 

 about fifteen more species of unrecorded Pipuncidi ; but until they 

 are more carefully studied and described, mere names are useless. 



Pijnzella anmdata, Mcq. — Mr. Billups' specimen is a female 

 of the not uncommon P. flavitarsis, Mg. {=^higuttata. Curt.). 

 P. anmdata may be a synonym, but is a very doubtful species. 



Clidogastra punctipes, Mg. — I do not know enough about the 

 Cordyluridse to name a species with certainty, but I confidently 

 say that Mr. Billups' specimens do not. even belong to the genus 

 Clidogastra. 



Oxypliora arnicce, Fin. — Is rightly named; but Fallen's 

 arnicce is only a synonym of the very common 0. mdiaria, Schrk. 

 {=Jlava, Geoff.). T. arnicce, L., is a widely different species. 

 Loew, in his latest writings, merged Oxyphora and Oxyna in 

 Tephritis. 



Sapromyza platycephcda, Lw. — I have already written of this 

 as an almost impossible British species ; but beyond that, my 

 small knowledge of this group sufiices to state with certainty that 

 Mr. Billups' specimens do not belong to the family Sapromyzidee ! 



