Twenty-five species of fish were found to have fed on one only species or group of crustaceans, as follows:—

On whalefeed: carpet shark, skate, hake, witch, lemon sole, half-banded sea perch, trumpeter, spotty, girdled parrot-fish, southern kingfish.

On Brachycarpus audouini: blind numbfish, turbot, green-back flounder, Hemerocoetes waitei.

On Copepoda: minnow, ahuru. boarfish. Notothenia purpuriceps.

On Paranephrops: eel, short-finned eel.

On Caprellids: bellows fish.

On Calanoids: pilchard.

On Nyctiphanes australis: silver dory.

On Alope palpalis: thornfish.

On Isopods: lump fish.

Analysis of Food-group IV.—Red cod head the list with 10 groups or species, but as already noticed, more stomachs of this fish were examined than of any other. Other fishes prominent in this series are blue cod (8 groups or species), smooth-hound (7), spined dogfish, barracouta, ling (5). But by far the most important conclusion is the extremely valuable role of whalefeed, of which the bottom and swimming forms, in their extraordinary though seasonal abundance, provided enormous quantities of food for at least 26 species, including 10 species not known to feed on any other nonbrachyurous crustacea.

Brachycarpus audouini, eaten by 13 species, and Nyctiphanes australis, eaten by only nine, but taken in great quantities, are also of major importance as food for fishes. Closer study would no doubt add to the list of those feeding on Copepoda and other minute forms. The above records do not attempt to evaluate the part played by the larval and other planktonic forms.

The abundance of whalefeed eaten by red cod must have a considerable bearing on the food value of this much-despised fish; the body-fat of red cod has been found (Carter and Malcolm, 1926, p. 648) to show a close seasonal agreement with the available supplies of whalefeed. In the swimming stages whalefeed was found to feed principally on diatoms.