PLANKTON OF THE GULF OF MAINE 
321 
stations on the outer part of the shelf off Halifax and generally distributed over 
the deep oceanic triangle into which the Laurentian Channel debouches, but not 
Fig. 89. — Occurrence of the glass worm Sagilta serratodentata. O. locality records, May to August X, August to Decem- 
ber; O. December to May. The large symbols mark the stations where this species has predominated notably over 
S. elegans. The hatched curve is the approximate limit to its area of occurrence up to August 
nearer shore in Scotian waters (Huntsman, 1919, p. 442, fig. 5). During June of 
that year S. serratodentata spread generally over the eastern side of the gulf with 
locality records on Browns Bank, in the Fundy Deep, in the Grand Manan Channel , 
