PTYCHODES. ' 39 



Wings with the membranes rather bronzed. Cubitus 

 and veins brownish black. The former expands into 

 a fuscous and longish trapezoidal stigma. 



This handsome fly is common in June wherever 

 varieties of the beech-tree abound. 



The males. 



Walker describes the winged male, which I have 

 not seen, but I have taken the apterous male in 

 company with the female late in October. It is 

 rather small and linear, its size 0*085 X 0'025 of an 

 inch ; bright green, rostrated, and furnished with 

 short and stout legs. 



Apterous oviparous female. 



Incli. Millimetres. 



Size of body 0-070xO-030 l-77xO-76. 



Length of antennae 0'030 0'76. 



Colour of different shades, as bright green or reddish. 

 Some are destitute of all markings, but others have 

 brown spots ranged down the back and sides. The 

 flocculent substance is most plentiful on the lower 

 somites. They contain from six to eight eggs. They 

 appear from October to late in November, according 

 to the coldness or advanced character of the season. 



Genus XIX.— PTYCHODES,* BucUon, 



Rostrum very short and stout. 



Head convex and broad, tufted with bristles. 



Antennas stout ; first and second joints gibbous, 

 the third longer than the three following taken 

 together, the fourth and fifth nearly equal, the sixth 

 joint furnished with a nail-like process, as in 

 Phyllaphis. 



* Fi'om Trruxw^'jG, striped or striated. 



