Part Til. — Twenty-fifth Annual Report 



February, 1905. — The stomachs of six herrings from a sample sent 

 from Loch Fyne contained each a considerable amount of Calanus 

 helgoLandicus. 



July, 1905. — ^No more herrings from the Loch Fyne district were 

 submitted for examination till July, when the stomachs of twenty-three 

 specimens were examined. These form part of a sample captured about 

 the end of April and retained during the interval in a cold storage 

 chamber. All the stomachs contained food, and in most of them the 

 quantity observed was considerable, and with two exceptions consisted 

 entirely of Copepoda — Calanus helgolandicus being apparently the only 

 species represented. In the two exceptions referred to the food 

 consisted of post- larval fishes and Calanus, and my notes indicate that 

 the food in these two was more decomposed than in the others, due 

 probably to the presence of the young fishes. 



September 22nd, 1905. — The stomachs of eight herrings were examined. 

 They were from a sample sent from Strachur, and captured two days 

 previously. Two of them were considerably distended, but contained no 

 food ; three contained some red-coloured matter, but there was nothing 

 that could be identified ; one was packed full with Calanus ; in the 

 other two there was some red-coloured stuff with fragments of Copepods 

 mixed up with it. 



December 11th, 1905. — The stomachs of thirty-four herrings sent from 

 Loch Fyne wei-e examined. Sixteen were found to be empty, or con- 

 tained some red-coloured matter probably derived from Calanus, but no 

 trace, even of their appendages, could be detected. All the others 

 contained the remains of CalanuS, the specimens being in a number of 

 cases tolerably whole, in others they were more or less fragmentary. 

 There was also present in many of the stomachs a quantity of red- 

 coloured oily matter derived probably from the Calanus. The fish 

 whose stomachs contained food comprised 6 § and 12(5", and the others 

 7 2 and 6 S. 



January, 1906. — The stomachs of twenty herrings sent from Strachur 

 were, with one exception, found to contain food, which appeared to 

 consist entirely of Calanus. Some of the stomachs contained a con- 

 siderable quantity of food. The fishes comprised 1 1 $ and 8 S- The 

 empty stomach belonged to a male fish. 



September 8th, 1906. — Eleven stomachs from Loch Fyne herrings 

 were examined at this date. One contained some food too much 

 digested for identification. One contained Calanus, Centropages hamatus, 

 Metridia lucens, and young Euphausiidae. One contained Calanus, 

 Centropages hamatus, Evadne nordmannii, and some Decapod larvae, 

 and another contained a small quantity of Calanus only. The food 

 observed in five of the others consisted entirely of Nydiphanes norvegica, 

 while two contained the remains of Euphausiidae which probably also 

 belonged to Nydiphanes, but they were too much digested to be 

 satisfactorily determined. 



October 12th, 1906. — The eleven stomachs of Loch Fyne herrings 

 examined at this date all contained food, in most cases in considerable 

 quantity. The sexes represented comprised 9 $ and 2 c?. The food 

 observed in two stomachs consisted chiefly of Calanus, but Centropages 

 hamatus, Temora longicornis, Oithona similis, and Decapod larvae were 

 also present. A small quautity of food, apparently all Calanus, was 

 observed in another. A third contained a moderate quantity of Calanus, 

 but Temora longicornis was also present. The food observed in other 

 four appeared to consist entirely of Euphausiidae, and were probably all 

 Nyctiph'ines — ^at least this was the only species that could be identified. 



