DISTRIBUTION OF MOLLUSCA. 5oI 
The seas of New Zealand and Australia have been formed into a 
province. As might be anticipated, their mollusca have little in 
common with those of the rest of the globe. 
The Japonic province includes the coasts of Japan and the Corea. 
The Aleutian province, the centre of which may be taken to be 
the Aleutian Islands, shows great analogy with the Boreal province of 
the west, a considerable number of the shells being identical—a fact 
especially interesting when we consider that very few species are 
found common to both the south-eastern and south-western coasts of 
America. 
The Californian province is very distinct from that of Panama ; 
the genera most numerous found there are Chiton, Acmza, Fissurella, 
Trochus, and Purpura. 
The marine shells of Panama are upwards of 1,300; the region 
included stretches from the Gulf of California to Peru. For our 
knowledge of this province we are much indebted to the researches 
of Dr. P. P. Carpenter, who has catalogued 654 species, as found at 
Mazatian. 
The Peruvian province contains a long list of species, and extends 
from Callao to Valparaiso. 
The Magellanic province includes the extreme south of America 
and the Falkland Islands. Many genera, the species of which are 
usually small, here reach an enormous size, and afford, in many cases, 
the chief animal food consumed by the quadrupeds and human 
population of that wild and desolate coast. 
The Patagonian province extends from St. Catharina to Point 
Melo on the east coast. ‘The number of species found also in the 
Falkland Islands is very small; but a large number are identical 
with Brazilian species ; yet the majority are peculiar. 
The Caribbean province extends from Brazil to the West Indies, 
and includes also the northern coast of South America and the Gulf 
of Mexico; a total of 1,500 species is enumerated by Professor Adams 
as belonging to the province. 
The Transatlantic province, or that on the coast of the United 
States, does not afford a large number of species, only 230 being 
known ; of these only fifteen are found in Europe. 
The study of the terrestrial and fresh-water mollusca affords even 
better grounds for their division into provinces; but we shall not enter 
into this subject here, as it belongs more especially to the Land World. 
We shall now say a few words on the depth of the sea or ocean 
in which Mollusca are found. 
