Glossobalanus marginatus, a new 

 species of Enteropneusta from the North Sea. 



By 

 Alexander Meek. 



With 14 Text-figures. 



The only species of Enteropneusta which have been 

 recorded from the area of the British Isles are two species 

 of the genus Dohchoglossus, one from the west coast of 

 Ireland (Ballynakill Harbour — Tattersall, 1905), the other 

 from the west coast of Scotland (Sound of Mull — Assheton, 

 1908). These presumably, like other species of the genus, 

 have an embryonic development. The occasional capture 

 of Tornaria off the coast of Ireland, in the Irish Sea, in the 

 Channel, and at St. Andrews have indicated that Balano- 

 glossus and its allies occur also in the area, but hitherto such 

 have evaded capture. The specimen about to be described was 

 captured off the Fame Islands and thus extends the range 

 of the group to the east coast and the North Sea, and it has 

 the further importance of belonging to a genus and a family 

 the members of which more than probably pass through 

 a larval phase. The specimen was obtained during a survey 

 made off the coast of Northumberland by the Ministry of 

 Agriculture and Fisheries at a depth of about 52 fathoms 

 off the Longstone, the instrument in use being a small 

 Petersen grab. The position of the boat at the time (9 a.m. 

 on August 22, 1921) was 55° 33' N., 1° 7^' W. I have to 

 thank the scientific staff for kindly submitting the specimen 

 to me for description. 



1. The Adult. 



External Characters . — The specimen is the anterior 

 end of a mature male and measured longitudinally, proboscis 



