fo Ma. Marxwicr’s Account of the Mufta Pumilionis 
end, black, and refembling a V. They paffed into their pupa ftate the 
25th of the fame month. The pupa was yellow, fhining, rather 
more than one line in length, and compofed of rings.— The flies ap- 
peared thé r2th of June and the following days; the perfect ani- 
mal is#well defcribed above. 
At what time thefe eggs are depofited in the rye, that gentleman 
. obferves, is not yet determined. The larvæ were fmall on the 23d 
April, and full grown the 25th May: on the fides of the ftems were 
{een no holes, from whence he conjeétures that the eggs. or larvae. 
muft enter at the top of the leaves. The fly, when tan forces. 
its way upwards, and flies out of its neft. 
The dwarf ftems Mr. Bjerkander obferved began to erow yellow 
and decay the 14th June, and were in fuch abundance, that in 
fome fields, 8, 12, or 14, were found in a fquare of two feet; from 
whence he concludes that great injary is done to the rye, and 
ftrongly recommends that the ftems fhould be pulled up and burnt, 
while the infect is in the larva or pupa ftate; and by ‘this means he 
thinks one or two perfons might deftroy many thoufands of them in 
a day, he himfelf having picked up 350 ftems in a few hours. 
- It will certainly be a pleafing fatisfaétion to the public in general, 
and to the farmer in particular, to know, that this infect is not the 
Heffian fly of America; and alfo, from the careful experiments of 
Mr. Markwick, to find that its deftruétive properties are not of that 
magnitude as were at firft apprehended, or as Mr. Bjerkander fup- 
pofed; though perhaps an increafe of the fly may render it a for- 
midable enemy. It is therefore much to be wifhed, that fuch gen- 
tiemen as have leifure and opportunity would pay fome attention 
to this fubje&, and, with Mr. Markwick, purfue his experiments 
with a view to difcover all the particular properties and natural 
ceconomy of this animal. Now, as this fly is bred here fo early as 
May, it is probable there is more than one brood in the year; for 
having been favoured with two or three of the flies by Sir Jofeph 
Banksy 
he E 
