ve 
BIGELOW: COAST WATER EXPLORATION OF 1913. 285 
Station Depth Sedentaria Atlantica 
10061 40-0 1 
10064 20-0 7 
475-0 5 
10071 20-0 ° 4 
190-0 7 
10080 12-0 t 
The only sedentaria taken in shallow water was dead and very frag- 
mentary; those from the deep hauls were all alive, and most of them 
inside their “houses” (Doliolum shells). The atlantica were all free, 
and alive. Neither was taken on the surface, which agrees with the 
rarity of Salpae and Doliolum on the surface, in the Gulf Stream 
(p. 278) at the time of our visit. When Salpae swarm at the surface 
of the stream, as they occasionally do (1909b), Phronima appears 
there too. - 
CopEpops.! 
Copepods were by far the most important constituent of the plank- 
ton in the Gulf of Maine (p. 274), where they were extremely abun- 
| dant; and the hauls revealed a rich copepod plankton over the shelf 
south of Cape Cod. But on the run west and south, these little crus- 
taceans gave way to other organisms (p. 269), the copepods in the 
| hauls south of New York being counted by individuals, instead of by 
hundreds of cubic centimeters. And in some of the southern hauls, 
| @.9., at Stations 10068, 10069, 10078, no copepods at all were detected, 
something never experienced in the Gulf of Maine. The geographic 
| oceurrence of the various copepods is listed in the following table. 
1Tdentified by Dr. C. O. Esterly. 
