190 fAugust. 



Ayrshire, and Arran. Two out of tliree specimens in 

 Kowarz's collection seem to me to be the same species as 

 my specimens. 



5. M. palUpes Zett. : a well distinpjuislied little species which T have 



taken in some numbers in Sussex (Lewes) and Kent (Lee). 



6. M. ohscurus Zett. : T had long suspected this species to be "British 



because of a specimen taken at Rannoch in 1870, but it 

 was not in good enough condition for identification ; T then 

 saw a specimen which was probably this species and which 

 had been taken by Dr. Sharp in the New Porest, but all 

 doubt was removed by a fine female taken by Col. Terbury 

 at Nethy Bridge on August 8th, 1904. This species may 

 usually be distinguished at a glance by its much larger size 

 than any other species of the genus. 



7. M. diadema L. : one of the largest "British species. "Very 



abundant on railings about " The Five Miles from Any- 

 where " near "Wicken Fen, and I believe over all the sandy 

 district past Brandon on to Yarmouth. 



8. M. Jlavipes Meig. : abundant in company with the last species 



near "Wicken Fen ; and also over a very large area in 

 East Anglia, as I have caught it in my garden here and 

 found it in abundance on Yarmouth beach, while tlie 

 Cambridge Dipterists find it common there ; and Mr. C. Gr. 

 Lamb has taken it at Padstow in Cornwall. It is a very 

 distinct but very little known species, which is so generally 

 supposed to be limited to the Mediterranean Fauna that 

 Kowarz in his Monograph of the European species of the 

 genus published in 1877 gave it as occurring in South 

 Europe and Asia Minor, and mentioned Constantinople, 

 Barcelona, and Lyons as localities, while he evidently con- 

 sidered Eoder's record from Wurtemberg as founded on an 

 error. He further states that it differs from M. jaculus 

 only by the colour of the legs, and that consequently it may 

 be only a variety of that species, while as a matter of fact 

 it is abundantly distinct. 



It was recorded as British in Stephens' catalogue of 

 1829, and feeling a curiosity to know upon what Stephens 

 could have introduced it I many years ago sought out his 

 specimens in the British Museum, and found three speci- 

 mens so named ; two of them were specimens of a Psilopus (!) 

 but the third was the true M.Jlnvipes. 



