liane NÉE 
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IV. Account of the Gizzard of the Shell called by Linnæus Bulla lignaria, 
addrefed to tbe Prefident. By Mr. George Humphrey, A. L. S. 
Read Dec. 1, 1789. 
SIR, 
HAVE been credibly informed that the late celebrated Dr. 
Linnzus, when he firft began his Syftema Natura, intended 
to have taken no notice of the Tefacea; and his reafon for it was, 
that as the animals of the far greater part were unknown, he did not 
choofe to defcribe their mere houfes or fhells. However, it is plain 
that he afterwards altered his mind; and though in his faid work he 
has inferted only a fhort account of the animal of each genus of the 
Teftacea in his charaéteriftic definition thereof, yet there is no doubt 
but that he would have mentioned any remarkable particulars of that 
of each fpecies, if he had been acquainted with any: every addi- 
tion therefore to this interefting part of Conchology, however 
little, would certainly have been acceptable to that indefatigable 
Naturalift, and I prefume will be equally fo to his admirers. To 
that end give me leave, Sir, to trouble you to lay before the Society 
bearing his name, the following notes refpeéting the animal of the 
Bulla genus of Teftacea. 
Some few years paft Mrs. Le Coque, who refided at Weymouth, 
fent up to her Grace the late Duchefs Dowager of Portland, a large 
fhell of that fpecies of Bulla called by Linnzus Jignaria, toge- 
ther with a curious internal part, accompanied by the follow- 
ing note: 
“Tam 
