276 



bulletin: museum of comparative zoology, 



expected only where the surface temperature was high. And this 

 proved to be the case. Salpae were more or less abundant at all the 

 stations south of New York and over the outer edge of the continental 

 shelf (Fig. 67) . By the first of August they had extended their range 

 to the waters off New York (Station 10082). And although they had 



Fig. 67. — Distribution of Salpa. d, S. democratica ; D, s. democratica 

 swarms; t, S. tilesii; f, S. fusiformis; c, S. confoederata; s, S. cylindrica; 

 z, S. zonaria. The curve is tlie probable northern limit of Salpae at the 

 time of our cruise. 



not then reached the south shore of Long Island (Station 10083), 

 they do so more or less regularly later in the season. The only 

 Salpae encountered in the Gulf of Maine were a few specimens of S. 

 tilesii which were taken on the eastern side (Station 10096). And I 



