221 Part III. — Twenty-first Annual Report 



Mugil chelo, Cuvier. 



A Grey Mullet about 14 J inches in length, captured by the salmon 

 fishers at the Bay of Nigg on March 14th, 1902, and which was kindly 

 handed over to the Laboratory for examination. It belonged to the same 

 species as those obtained in the Bay last year, viz. Mugil chelo. There 

 was some food in the stomach of this specimen, but it was too much 

 digested for satisfactory identification. 



Another specimen, captured on the 11th of June, had also in its stomach 

 very little food that could be identified, the only organisms satisfactorily 

 distinguished were one or two Temora longicomis and a number of 

 specimens of the Cypris stage of Balanus sp. 



Labrus mixtus, Lin. 



A specimen 12^ inches in length was captured 15 miles north-east from 

 Tiumpan Head, Lewis, in 70 fathoms, in May 1902, and sent to the 

 Laboratory at the Bay of Nigg for examination. The stomach of this 

 specimen contained nothing perfect enough for identification, but in the 

 intestines were found the vertebrae of fishes, fragments of molluscan 

 shells, and some small rounded stones. 



Several specimens of Glavella labracis, v. Beneden, were obtained on 

 the gills of this Labrus. 



Gadus luscus, Lin. 



Several specimens of the Whiting Pout, varying in length from 7f to 

 11J inches and captured off Aberdeen in January last year, appear to have 

 been feeding chiefly on Crustaceans. The food found in the stomach of 

 the smallest specimen (7f in.) consisted of the remains of Annelids, 

 belonging apparently to the Chsetopodae, and of fragments of Schizopoda 

 and Amphidoda, but the only organism that could be satisfactorily 

 identified was a male specimen of Ericlifhonius Tiunteri (Spence Bate). 

 A Whiting Pout 9 J inches in length had in its stomach four small 

 Cephalopods (Rossia? macrosoma, Delle Chiage), and a specimen of 

 Pandalus montagui, Leach. In the stomach of another 10 inches long 

 were the fragments of what appeared to be Spirontocaris securifrons, 

 Norman. Fragments of what looked like Schistomysis inermis were 

 observed in the stomach of another 10| inches in length ; while in the 

 stomach of the largest of these Whiting Pouts were found Grangon 

 allmanni, Kinahan, Pandalus montagui, Leach, and Pandalina 

 brevirostris (Rathke) — the length of the fish was 11 J inches. 



Gadus esmarkii, Nilsson. 



A considerable number of Norway Pouts captured in the North Sea 

 have been examined, but as there was a good deal of similarity in the 

 contents of their stomachs, only a few are particularised here. Small 

 Crustaceans were largely represented amongst the contents of their 

 stomachs, but Schizopods, Parathemisto and pelagic Copepods were more 

 frequently observed than other members of that group, as shown by the 

 following sample of the fishes, which ranged in length from about 5| to 

 6f inches. 



