THE MOUNT DESERT REGION 



ern limit of distribution. Consequently, by analogy with other 

 better-known groups of organisms, they might be considered 

 somewhat atypical when compared with individuals from 

 farther north. 



The geographical distribution given for the various species 

 in this work includes usually only those localities recorded 

 within the region from Vineyard Sound to Cape Farvel, 



Greenland. However, many of these species are found around 

 Iceland, where conditions of temperature and depth of water 

 are quite similar to the regions reported in this paper, as well 

 as Jan Mayen Island, Faroe Islands, and Spitsbergen. Lund- 

 beck includes a fine chart of these regions and the stations 

 from which specimens have been taken. 



The color of most of the monaxonid sponges is a dark, 

 brownish gray and those which have a distinctive color quickly 



