Abstract
The object of this research was to compare the feeding mechanism of Nebalia with that of Hemimysis described by Miss Manton and myself (1927). The observations of the living animals were made partly at Naples while I was occupying the Cambridge University table, and partly at Plymouth where I had the use of the London University table.The methods used in determining the feeding currents were the same as those used for Hemimysis (Cannon and Manton, 1927). To obtain a ventral view of the trunk limbs, I simply held the living animal upside down, gripping the abdomen with a pair of forceps, and in this position it would feed for a long time. I found it possible even to remove the entire carapace without killing the animal or upsetting the normal movements of the limbs.

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