to 
rangement; suchasCryptoconchus, Acanthocnsetes, ROOMVin. 
Lepidopleurus, and Chiton, which were formerly in at . Hist. 
arranged under the head of Chiton, and associated 
with the multi-valve shells by the Linnean school; 
Patella or Limpet, a genus nearly allied to Chiton ; 
Emarginula, Fissurella, Capulus, Mitella, Calyp- 
trfea, and Crepedula, which were formerly denomi¬ 
nated Patella; and various species of Haliotis, or 
ear-shell; Auricula; Pianorbis ; Lymnas or Swamp- 
shell ; Janthina or Blue-shell; Mitra or Mitre-shell; 
Conus or Cone; Cyprsea or Cowry ; Ovula or Egg¬ 
shell ; Bulla or Bubble-shell; Dolabella, &c. 
Table 22 contains shells of the Argonauta or 
Paper-Nautilus and Nautilus ; various specimens 
of pearls, which are produced by disease in shells; 
gloves made from the beard of the Pinna squamata, 
on the shell of which they are placed. 
Tables 23 to 30 are also under arrangement; 
they contain the Acephalous, Headless or Bivalve 
Mollusca; such as Teredo or Ship-worm; Pholas 
or Piercer, which were formerly arranged along 
with the multivalve shells; Solen or Rasor-shell; 
Mactra; Tellina or Telline; Donax or Wedge- 
shell; Venus; Cardium; Tridacna or Clamp- 
shell ; Chama; Isocardia or Heart-shell; Area or 
Ark-shell; Malleus or Hammer-shell; Mytilus 
or Muscle; Pinna; Pecten or Scallop; Spondylug 
or Spiny-oyster; Ostrea or Oyster, of which there 
are various species. 
At 
