Brentow.— Explorations in the Gulf of Maine. 
PLATE 5. 
Occurrences of pelagic animals. 
C. Clione limacina. 
L. Limacina balea. 
S. Sagitta serratodentata, abundant. 
eae ws + scarce. 
H. Eukrohnia hamata. 
F. Salpa fusiformis. 
M. “ mucronata. 
E. Euthemisto compressa. | 
The curve ——-— marks the off-shore limit to abundance of Sagitta elegans, 
the curve - ---- the in-shore limit to abundant S. serratodentata. 
