GEOGRAPHICAL DISTRIBUTION OF CRUSTACEA. 1559 



I. OCCIDENTAL KINGDOM. 



In the Occidental kingdom, there are in the first place, two SECTIONS, 

 the Eastern and the Western; and both these sections are subdivided 

 into 



1. The Torrid Subkingdom; 2. The South Temperate Subkingdom; 

 3. The North Temperate Subkingdom. The last two subkingdoms 

 include the whole of the Temperate zone, excepting perhaps the 

 extreme portions, which on zoological grounds may be separated, and 

 united to the Frigid zone, forming the Arctic or Antarctic kingdoms. 



In the following mention of the provinces, we give their lengths along 

 the coast; and it will be seen, that although they may appear to be 

 numerous, they still have a wide extent, the length being seldom under 

 five hundred miles, and sometimes full four thousand miles. 



A. WESTERN SECTION. 

 I. TOKBID SUBKINGDOM. 



1. The PANAMA Province (torrid), extending from the equator or a 

 degree south to a degree beyond Acapulco. Length, sixteen hundred 

 miles. 



2. The MEXICAN Province (north subtorrid), reaching from the 

 termination of the Panama province to the Peninsula of California. 

 Length to the California Peninsula, exclusive of the Gulf, six hundred 

 miles. 



3. The GUAYAQUIL Province (south subtorrid) occupying from Cape 

 Blanco, the west cape of South America, nearly to the equator, and 

 including the Bay of Guayaquil. Length, nearly two hundred miles. 



II. SOUTH TEMPERATE SUBKINGDOM. 



1. The GALLAPAGOS Province (warm temperate) includes the Galla- 

 pagos Islands, but does not reach the continent. The genera peculiar 

 to it are Microrhynchus, Pelia, Ehodia, Thoe, and Othonia. There are 

 also two species of Mithraculm, one of Mithrax, one of Pisoides (also 



