103 
A NEW SPECIES OF ENTEROPNEUSTA FROM 
THE NORTH SHA. 

By A. MEEK. 

The specimen was captured in a haul made with a Petersen 
grab during a survey by the Ministry’s research vessel, “ George 
Bligh,” on August 22nd, 1921, at a depth of 52 fathoms off the 
Longstone. It thus comes within the Northumberland area, 
and it was sent to me by Dr. E. 8. Russell for identification and 
description. 
It proves to be a new species of the genus Glossobalanus, and 
has been called Glossobalanus marginatus. A full description 
is given in No. 264 of the “ Quarterly Journal of Microscopical 
Science.’ Here it may be said that the specimen is the anterior 
end of a mature male, and that it is peculiar in having been pro- 
cured from a great depth and in the following structural features :— 
the large genital wings ; the row of genital pores being not quite 
marginal, but protected by a thin process of the margin containing 
a short third branch of each gonad ; the general brown pigmenta- 
tion concentrated in a paired row of spots along the ventral aspect ; 
the asymmetry of the branchio-genital region of the body, and of 
the glandular ridges of the body wall; and in the asymmetrical 
disposition of the post-branchial caecum of the alimentary canal. 
The occurrence has led to an attempt to associate with the . 
genus Glossobalanus a Tornaria larva previously obtained at 
St. Andrews, distinguished by its broad anterior region and its 
simple ciliated bands. A larva of this character has been found 
in a Plankton gathering made off the Longstone on July 27th, 
1921, by the Laboratory’s motor boat, “ Evadne.”’ It is con- 
cluded that a series of isolated communities of the species occurs 
along the east coast of Britain, the larva being the connecting 
link between them. 
