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INTRODUCTION. 



Up to the present time very few Solenogastres have been collected along 

 the Atlantic coast of North America. Chaetoderma canadense Nierstr. has been 

 taken off Port Hood, Canada, Neomenia carinata Wiren came from the North 

 Atlantic, and Neomenia microsolen Koren & Danielson is recorded from the 

 West Indies; but none of these species is represented in the present collection, 

 and accordingly nothing further can be said regarding their geographical range. 

 The discovery of Chaetoderma nitidulum off the New England coast indicates 

 that this species is relatively abundant throughout the North Atlantic Ocean 

 north of the fortieth parallel. Proneomenia acuminata was originally described 

 from specimens collected in the West Indies. The material in hand extends 

 its distribution along the Florida coast and the Atlantc seaboard as far north 

 as Rhode Island. Other species in the present collection are new, and thus 

 far their known range is very Umited, 



