APPENDIX. 
253 
Of shell fish the pearl oyster is the most valuable, and the pearls 
are generally good. We found, besides, the Bulla Amplustra, Buc- 
cinum Maculatum, Volutae Papalis and Episcopalis, Conus Ebrceus, 
Cypraea Arabica, C. Carneola, C. Guttata, C. Mauritiana, and C. Isa¬ 
bella ; also several varieties of Murex, Nerita, Patella, and Turbo. 
Corals and zoophytes are common on the coast. Of land shells 
we procured eleven different varieties, four of which had reversed 
mouths: they belong principally to the first division of the volute of 
Mawe’s Linnaeus, 
As to the quadrupeds of the Sandwich Islands, the three natives, 
i. e. the hog, dog, and rat, need no description ; those now introduced 
are the cow, horse, sheep, goat, rabbit, and mouse. 
In a geological point of view, the Sandwich Islands may generally 
be described as a group of volcanoes, rising amidst coral banks and 
reefs. The mountains are chiefly composed of lavas and other vol¬ 
canic substances. The great crater of Peli, which we visited, appears 
to be situated in a trap rock. 
The low flat lands near the sea appear to have been coral reefs 
become dry; there carbonate of lime is to be found, and calcareous 
masses of coral and shells, some completely petrified, others in dif¬ 
ferent stages, from the fresh shell towards petrifaction. 
In Oahu, amygdaloid and argillaceous porphyry are found. 
