feeng 1) 
PMR One orb A eer rey 
EP EE wee RAR OP ES“ RAS, 
Plate 8. 
The AnTieRs have a multitude of clofe-conne¢ted joints, and grow 
all the way {maller to a point. 
The BrisTves at the Tail are fhort, and weak. 
Nothing can be ftranger than the hiftory of this Fly, which came 
to my knowledge by an accident laft year; and, I believe, has not 
_ been obferved by any writer. 
On a ftone obelifk, ereéted before a houfe in Pondbn to fupport 
the lamp, I obferved feveral oblong, greyith tubes, or cafes, running 
in various directions ; fome ftrait, and others a little bent. I thould 
have fuppofed them the tubuli, or cafes of Sea Worms, petrify’d, as 
is frequent in many kinds of ftone; but that thefe obelifks carried 
very plainly the marks of the chiffel ; and the little tubules I obferv- 
ed were wrought over them ; and ene evidently pas been formed 
after the ftone was work’d. 
The fingularity of this, caufed me to direé& a fervant to pick off 
fome of them; which he attempted in vain: he found them as hard 
as the reft of the ftone, and fixed to it with great firmnefs: with 
the help of a hammer, fome few were at length got off; and 
T found nothing fhelly in them; but that they were mere ftony 
tubes, form’d of the matter of he obelifk, in fmall granules, ce- 
mented clofe. 
In breaking feveral others, I at length found in fome, the creature 
which had form’d them for its houfe and fhelter: this was a little 
yellowifh Worm, with a black head, and a number of {mall, fhort 
feet. It ufually refided in the bottom of the tubule; but came out 
at pleafure. 
On fome cobwebs, about the upper part of the obelifk, I found, 
among other Infects, the remains of ‘two or three Flies, feeming 
either of the Day-Fly, or Moth kind; but too aps for me te 
aicertain the Species. 
C2 Thus 
4 
