REPORT OX THE HTDROIDA. 
lxi 
United States in the Gnlf Stream, we must not lose sight of the fact that the more 
limited area investigated by the latter allowed of a greater concentration of work and 
of more exhaustive examination than it seems possible for the Challenger to have 
bestowed on most of the stations comprehended in the vast area over which its explora- 
tions extended. 
The detailed distribution of the Hydroids brought home by the Challenger will be 
seen from the following list of Stations and from the appended table, giving the Region 
which each species inhabited, and the depth from which it was taken. 
