142 ' J'^ine, 



61. ^yrphus arctinus, Ztt., and S. harhifrons, Fin. : one of these 

 two must be considered new to Britain. In June, 1870, at Rannoch, 

 I caught a lot of a SyrpTius, which I considered S. arcticus, but which 

 I was informed by Loew was only the well known S. harhifrons, Fin., 

 and consequently only S. harhifrons occurs in our English lists ; but 

 in 1889, when revising my Syrphidce, and comparing many of them 

 with continental types, T came to the conclusion that our species was 

 distinct from theirs. Since then, in April, 1892 and 1893, Mr. E.. C. 

 Bradley has taken true S. harhifrons in considerable numbers at Sutton 

 Park, and I am consequently confirmed in my belief that the summer 

 northern species is true S. arcticus, Ztt. Besides Rannoch, I have 

 taken this northern species in June at Arran, Loch Maree, Lairg and 

 Tongue, and in July at Inveran. 



62. Epicampocera amhulans, Mg. : Brauer and Bergenstamm have 

 published three elaborate treatises on what they call the Mfscaeia 

 ScHizoMETOPA, in 1889, 1891 and 1893, which are intended to bring 

 this difficult group into systematic order ; up to the present however 

 they have almost added to the previously formidable difficulties of 

 determining the names of species, and consequently I am still very 

 averse to introducing new British species in this group until I become 

 absolutely sure about their nomenclature. For instance, Ceromasia 

 amhulans of Eondani turns out to be a very distinct species from 

 Tachina amhulans, Mg. ; Brauer and Bergenstamm place Rondani's 

 species in Dexodes, a sub-genus of Ceromasia, while they put Meigen's 

 species in Megalochceta, a sub-genus of Epicampocera. I do not think 

 there can be any doubt but that I possess this latter species in two 

 males from Darenth on April 2nd, 1869, one male from Abbotts Wood 

 on May 17th, 1873, and a female from there on June 28th, 1867. 



63. Myxexorista macrops, B. and B. : this Tachinid I should a few 

 years ago have introduced without hesitation as Exorista lihatrix, Mg., 

 but now Brauer and Bergenstamm's writings have made me alter my 

 opinion. They have formed a genus Myxexorista, in which they have 

 placed E. lihatrix, which, however, they consider to be a jumble of 

 three species Certainly, I think my two specimens difEer from my 

 continental types named by Kowarz by the shallower cheeks, and 

 consequently I accept the species M. macrops. One of my two males 

 was caught at Darenth on May 12th, 1867, and the other at Abbotts 

 Wood on July 5th, 1868. 



64. Hyetodesia quadrinotata, Mg. : two males at Barton Mills on 

 August 14th, 1886. 



