SEA-FISHERIES LABORATORY. 365 



It is obvious from a glance at the above, that Crustacea 

 and fish compose the main food of yellow gurnards. 



Red Gurnards (Trigla cuculus, Linn.). 



Three hauls in May (one from Carnarvon Bay) yielded 

 106 red gurnards, ranging from 10 to 44 cms. in length. 



As in the case of the yellow gurnards, Crustacea and fish 

 are the main constituents of their food as shown by the following 

 synopsis : — 30 empty, 3 zoophytes, 2 Flustra, 4 Aglaophenia, 

 11 Eupagurus, 36 Hyas, 11 Stenorhynchus, 16 Carcinus, 26 

 Portunus, 14 Crangon, 3 prawns, 3 crayfish, 8 amphipoda, 

 4 Galathea, 2 Pecten, 3 Gobius minutus, 1 Ammodytes, 

 6 small stones and sand. 



Plaice (Pleuronectes platessa, Linn.). 



From 12 hauls, at 10 localities in various parts of the 

 district, were obtained 501 plaice. They ranged from 12 to 

 48 cms. in length. The hauls Were taken in April, May, and 

 June. 



The staple food of this fish seems to be mollusca and 

 annelida, as can be seen from the following : — 85 empty, 

 2 zoophytes, 40 ophiuroids, 6 Echinus spines, 8 heart-urchins, 

 2 Eupagurus, 5 Crangon, 70 amphipoda, 3 Idotea, 122 Solen, 

 88 Tellina, 25 Scrobicularia, 154 Donax, 7 Cardium, 15 Mactra, 

 1 Pecten, 6 Philine, 1 Lima, 1 Lutraria, 27 Nucula, 7 annelida 

 (unrecognisable), 1 Polyno'e, 59 Nereis, 26 Arenicola, 67 sabellids, 

 4 Aphrodite, 145 terebellids, 7 Nephthys, 1 nudibranch, 1 

 Gobius minutus, 1 fish-remains, 171 sand. 



Dabs (Pleuronectes limanda, Linn.). 



Altogether 529 dabs were examined. These were obtained 

 from 15 hauls at 13 localities throughout the district, on various 

 dates in April, May, and June, and the specimens measured 

 from 9 to 31 cms. 



