4 BIOLOGICAL SURVEY OF 



Isopoda Aselloida 

 Desmosomatidae 



Desmosoma lobiceps 

 Cumacea 



Leiicoiiidae 



Eudorella difficilis 

 Diastylidae 



Ekdiastylis cornuifer 



The Clioiiiostomatidae described here are the first mem- 

 bers of the family taken in New England. 



I have to thank Mr. S. N. F. Sanford, of the Boston 

 Society of Natural History, for the loan of the specimens of 

 Cumacea in the collection of the Society. 



Unless otherwise noted, the type material mentioned is in 

 the collection of the Biological Survey of the Mount Desert 

 Region and is catalogued under the numbers given. 



The bibliography includes the literature consulted and all 

 the titles as far as I know on the family Choniostomatidae 

 since the publication of Hansen's monograph (1897). 



The figures have been prepared by Mr. Simon Cohen, the 

 artist of the Survey, mostly from the author's drawings. 



