24 
GUIDE BOOK TO THE BRITISH MUSEUM. 
Table 16. The pig cowries ( Trivia ), which from the ribs on the 
back have been compared to scored pigs, from their resemblance to 
the animal ; the China shell, or Ovula, as the Ovula angulosa , which, 
like the orange cowry, is worn as an ornament by the natives of the 
country where it is found, and where it is so valued that they sometimes 
cut cones or other thick white shells into its shape. These shells are 
called Porcellaines , and are supposed to have been the cause of china 
being called by that name. The weaver’s shuttle ( Radius ), which is 
so called from its shape. 
Table 16. The various genera allied to Turbo , as the pome- 
granate or Turbo Sarmaticus, from the Cape of Good Hope. The 
singular, or Turbo torquatus, with its peculiar operculum, from New 
Zealand. The golden sun ( Imperator occidentals ), from the West 
Indies. The imperial, from New Zealand. The Guilfordian sun 
{Imp. Guilfordice ), from Japan. The pheasant ( Phasianella varia ), 
from New Holland. 
Table 17. The Top Shells ( Trochus) and their allied genera; as 
the pyramid (Pijramis). The rosary ( Clangulus Pharaonicus). The 
jujube berry ( Trochus Ziziphorus). The iris or rainbow eardrop 
( Cantherus Iris), from New Zealand. The button shell ( Rotella 
lineolata). The strawberry ( Monodonta ). The gold button ( Livona 
aurea), which is peculiar for the light golden colour of the pearl. 
The dolphin ( Delphinula ). 
Table 18. The false ear shell ( Stomatella and Stomatia). The 
true ear shell ( Haliotis ), as wrinkled ear (II. Midce); the iris or 
rainbow ear (H. Iris); the slender ear (II. Asinina); the double 
ribbed ear (Padollus). The slit limpet (Emarginula). The shield 
shell ( Parmophorus ). The key-hole limpet, or mask (Fissurella). 
The long-holed limpet ( Machrochisma ). The tooth shells (Denta- 
lium). The false patellas ( Lottia ), from South America. The nerites 
(Nerita). Fresh-water nerites ( Neritina ). The crowned nerites 
( Clithon ), and the fresh-water boat shells (Navicella). 
Table 19. The apple snails (Ampullaria). The reversed apple 
snails ( Lanistes ). The purple, or floating snail ( Ianthina ). The 
nipple shell (Natica). 
Table 20. The Venus’ ear ( Cryptostoma ). The winkle (Lit- 
torina ), and other genera allied to them. The pagoda shell (Pa- 
godus). The staircase shell (Solarium), so called on account of 
the ridge round the cavity in the axis or umbilicus resembling a 
well staircase. The screw ( Turritella), as the press screw ( T. bicari- 
nata). The milk shell (Eulima). The ladder shell ( Scalaria ), often 
called by the Dutch name, Wentletrap, signifying a winding ladder; 
they were formerly very rare, but are now brought from China. 
Table 21. The Fresh-water Clubs (Melania); the clubs ( Ceri - 
thium) ; and the pond snails (Paludina). 
Table 22. The worm shell ( Vermetus), which is like the tubes of 
serpulse. The fool’s cap ( Capulus), and the Hipponyx with its 
shelly under valve, which has caused it to be mistaken for a bivalve 
shell. The slipper shell ( Crepidula ). The cup and saucer limpet 
(JDispotea). The Trochus-like limpet ( Trochila) and the Neptune’s 
cap, which has a cup-shaped under valve. The carrier (Phorus), 
which has the peculiarity of attaching to the outer surface of its 
