i5>08] 205 



the characters given in the description referring to the hypopygium, 

 and by the presence of the hind tibial bristle, as well as the differently 

 sized scutellar bristles. The thickened costa and large hypopygiutn 

 will serve to separate it from sublugubris, Wood. The species is very 

 common at Honhill, Dumbartonshire, in May and June every year. 



Phora vitripennis, Mg., which has hitherto been a very scarce 

 species here, turned up on July 11th this year in a most unexpected 

 manner. I had the impression that the likeliest place to look for this 

 species was in humble bees' nests ; but while searching for small 

 Phoridce on a wall which skirts the highway between Bouhill and 

 Dumbarton, the day being wet, I discovered a number of this insect 

 on a patch of moss. The first specimens I took were a pair in coi). 

 I searched carefully for more, and altogether I took twenty-eight 

 specimens, several of which had the wings in an undeveloped con- 

 dition. The species was just emerging, and I saw one male emerge 

 from the moss, and it looked quite strange with the yellow thorax 

 and minute milk-white wings. Those undeveloped specimens were 

 matured in an hour or two. The $ if taken singly may confuse one 

 if worked out by Dr. Wood's table, as the costa extends beyond the 

 middle of the wing, the 2nd division being quite 1| times the 1st. 

 The hind tibial bristles are constant however. 



Bouhill, Dumbartonshire, N.B. : 

 July, 1908. 



HYADINA NITIDA, Mcq., A SPECIES OF DIPTERA NEW 

 TO THE BRITISH LIST. 



BY J. R. MALLOCH. 



Last September 1 found at Bouhill, Dumbartonshire, a specimen 

 belonging to the genus Hyadina, which I had some doubt about, and 

 1 submitted it to Mr. Collin, who returned it as nitida, Mcq. The 

 genus comes next to Philhygria in our list, aud the species may bo 

 distinguished from that genus by the bristles on the sides of the face 

 being much finer, by the shining brownish colour of the insects, and 

 by the matt black marks on the scutelluin and, except in nitida, on 

 the pleura?. The following table should serve to distinguish the 

 species : — 



