( 748 ) 
or difturb them, and then move but little and feebly, 
as if they had been afleep and were wakened out of 
it. 
Whether they find out thefe large Caverns to which 
they retire/eady made in the Earth, or hollow and form 
them firft for their own Reception, I cannot fay, but this 
' I am affured, that they are often met with under a firm 
folid Surface of Eanh, that has not been ftirred or plow- 
ed in many Years before, and no manileft PafTage can be 
difcovered how they got there. 
I am informed of another Particular relating to them, 
and which mdced was very remarkable; That a Year or 
Two ago in the Summer, all along the South Wefi 
Coaft of the County of Gallway, for fome Miles toge- 
ther, there were found dead on the S|]oar, fuch infinite 
Multitudes of this Vcrmm, and in fuch vaft Heaps, iliat 
by a moderate Ffiimatc, one computed there could 
'not be left than Forty or Fifty Hor:e Leads in all ; which 
plainly difcovers to me, how and trom whence ihefirft 
Stock of thefe came to us, in i688. For. as I take it» 
this exceeding great Quantity that lay dead in the Strand, 
was a new Colony or a fupernumerary Swarm from the« 
fame Place, driven by the Wind to Sea from their Na- 
tive Land, which I conclude to be NormafiJy or Brttta* 
my in France^ it being a Country much iniefted with this 
Infccft, and that lies very open and expofed to all thefe 
Parts of Ireland'^ and from whence ^ Efjgland heretofore 
^ Of which the Learned Moufett in his Book de Infe^is has left us a re- 
markable Hi ft ory, |>. 1 60. where fpeaking of this fame Fly, he fays ^ Prodi- 
tmn eft in AngloYiim Annalibus^ Amo Chrifti 1574. '^^cejfimo quarto Februarii^ 
tantam eorum Multitudinem in Sabrinam Fluvium de lapfaw, ut aquaticis Molen* 
dinU Rotas fifterent atque obruerent , ^ fane nifi ur,a cum Hominum Induftria, 
Gallivdi, Anates^ Capimulgdiy Timmnculi, Vefpertiliones, alt&q\ Pradatrices 
Aves, {qm hos in friwarik habere cibls videnPur) auxitio fnifienty fuffi}cat£ ab 
fis Molendindiy etim mm hodie obmutuiffsnt* 
has 
