DOTO FRAGILIS. 



deposit for their spawn, which invests the stems of Antennularice in transverse folds, so tightly 

 packed, that the windings cannot readily be traced. The ova are densely imbedded in a 

 flattened, gelatinous strap of moderate breadth ; this does not form a continuous spiral, but 

 is reflected upon itself at each volution, so as to leave a small portion of the stem of the 

 coralline uncovered. We have taken the spawn in October. This is a very inactive animal, 

 moving slowly, and rarely swimming ; when removed out of the water, on account of the 

 firmness of its tissues, it does not collapse like most of the Eolidida. The branchiae are very 

 apt to fall off, hence its name. 



Figs. 1, 2, 3. Doto fragilis in different positions. 



4. Branchiae, more highly magnified. 



5. Spawn. 



6. A portion of the same more highly magnified. 



