136 



aS. 1. Smith — Crustaceans of the Atlantic Coast. 



Of the thirty-six Greenland species, six are not yet recorded from 

 ontside the Greenland seas, so that out of thirty species, twenty-six, 

 or about eighty-seven per cent., are known upon the eastern coast of 

 North America from the Gulf of St. Lawrence southward ; while 

 twenty-four species, or eighty per cent., are known in the European 

 seas. An uncompleted examination of the Amphipoda gives results 

 entirely in harmony with those above derived from the Thoracostraca, 

 so that it is cei-tainly safe to assert that, at least as far as the Mala- 

 costraca are concerned, the marine fauna of Greenland is essentially 

 the same as that of the arctic seas of both Europe and Amei'ica, or, 

 in other words, it is only a pai't of the great arctic, circumpolar fauna. 

 That the fauna of the Greenland seas should have its closest relations 

 with the fauna of tlie North American coast proper, rather than with 

 that of Enrope, is what might be expected from the geographical 

 position of Greenland and the fact that the waters of the northern 

 part of the North American coast are more arctic in temperature 

 than the waters upon the coast of Europe. 



ERRATA. 

 Page 31, 2d line, for ' Robert,' read ' Richard.' 



" 54, for ' Munadopsis,' read ' Muiiidopsis.' 



" 61, 6th line from bottom, for ' Mere,' read ' Meere.' 



" 69, 9th line from bottom, for ' Tynside,' read ' Tyneside.' 



" 105, 3d line from bottom, insert 'of before ' K oculata.'' 



" 115, 1st line, for ' nasicoidis,' read ' nasicoides.' 



" 12P, 16th line, for ' Pseudaplewonedes,'' read ' Pseudopleuronedes.'' 

 New Haven, May 1, 1879. 



