+--------------------------------------------------+--------+---------+ | | Total | Species | | | number |confined | | | of | to the | | |species.|province.| +--------------------------------------------------+--------+---------+ |(1.) First, or North Atlantic Province, to lat. }| | | | 30° N. (If the West Indies had been included}| 31 | 22 | | the numbers would have been 42 and 28) }| | | |(2.) Sub-province of South Africa | 11 | 5 | |(3.) Second province, or West Coast of North and }| | | | South America }| 22 | 15 | |(4.) Third province, or East Indian Archipelago | 37 | 24 | |(5.) Fourth, or Australian province | 30 | 21 | +--------------------------------------------------+--------+---------+ The least prolific of these provinces contains 22 species, or between 1/5th and 1/6th of the total number of species, and the most prolific between 1/3rd and 1/4th of this same number. In each of these provinces, it is remarkable that the peculiar species are very nearly two thirds of the whole of its inhabitants. These facts, I think, show that the above provinces are natural divisions of the world, as far as their Cirripedial inhabitants are concerned.