of the FUliery Board for Scotlvnrl. 



531 



Size of 

 Fish. 



13-0 cm. 



12-7 



14-4 



14-7 



14-7 



14-5 



Kind of Food. 



Sagitta, few ; 



„ numerous 

 ,, numerous ; 

 ,, frequent; 

 „ frequent; 

 ,, numerous ; 



Porathemhto, none ; 



,, frequent ; 



,, frequent ; 



„ few ; 



,, common ; 



,, frequent ; 



Calami. s, frequent 

 , . few. 

 , , rare ; 

 , , few. 

 , , few. 

 „ few ; 



Metvidia, very rare. 

 Temora, rare. 



Temora, rare. 



The records for the whole thirty-one stomachs are very much a 

 repetition of the part here given, and the peculiarity of the food contents 

 will be more noticeable when compared with the food of the next sample 

 of Herrings, which are also from Aberdeen Bay, but which were collected 

 on June 10th of the present year (1901). In this sample there were 

 eighteen Herrings, the lengths of which ranged from 13 to 16| centi- 

 metres, and their food consisted very largely of pelagic Copepods, the most 

 common form being Temora lonyicornis, a species which in the last 

 .sample held a very subordinate place as a constituent of their food. 

 Pseudocalanus elongatus was moderately frequent, but larval Balani 

 (cypris stage), though found in a considerable number of the stomachs, 

 were not very numerous ; on the other hand, /S'c/w'siomysis spiritus, which 

 only occurred in a few stomachs, was coinmon or abundant in one 

 or two of them. Oikopleura, which were common in the stomachs of 

 some of the Herring from the Firth of Forth, were also moderately 

 frequent in the stomachs of this lot. Subjoined is part of the notes made 

 when this sample of Herrings was examined, as it will show more clearly 

 the contrast between their food and the food of the previous sample : — 



Size of 

 Fish. 



Kind of Foop. 



15 '8 cm. Copepods, frequent (refnora and Pseudocalamw); yoxm^ Balani,t&K\ Oikopleura, many. 



14-8 

 14-0 

 15 "2 

 13 '0 

 16-5 



common ( „ (chiefljO. i. )l " >. " i. few; ,, many, 



frequent ( ,, and „ ); ,, >> none; „ none, 



abundant ( ,, (chiefly), ? ) \ Schistomysis spiritus, coravaoa. 



»bundant( ,, (chiefly), none ); ,, ,, abimdant. 



few ( ,, and Pse^t,docalan%is); young Balani, t^v!. 



Four specimens captured off Collieston on July'5th, 1901, measured 14, 

 14, 14^, and \hh centimetres respectively, and the food observed in 

 their stomachs was as follows : — 



(1) Copepods, frequent (i4ca?-<ia sp.) ; Podon sp., very rare; young 



Bcdani, very few. 



(2) Copepods, frequent (they appear to be mostly Acartia sp. and 



Pseudocalanus elongatus) ; remains of a Schizopod ; Podon sp., very 

 rare ; a minute Gasteropod ; and a few young Balani. 



(3) Schizopods, numerous (chiefly Scliistomysis sjnritus) ; Pseudocuma 



cercaria, rare ; Pseudocalanus elongatus, few ; Acartia sp., frequent ; 

 young Balani, rare. 



(4) Copepods, frequent (they appear to belong mostly to Acartia) ; young 



Balani, very few. 



The names of all the species observed in the stomachs of the Herrings 

 examined are given in the annexed list : — 



