348 



E. S. CLARK. 



CARANGID^. 

 Caranx trachurus L. 



Caranx trachurus L. 

 The spawning period of the scad has been given as May and June for 

 the English Channel, but an extension at least to August is warranted by 

 the present records, which indicate June to August. The frequency 

 increases from the twenty-fathom contour line outwards. Young stages 

 with fully developed adult characters were taken in September, generally 

 in midwater or quite close to the surface, at lengths varying from 50 to 

 80 mm. Several individuals from haul 117 between 60 and 70 mm. in 

 length were kept alive on board the Oithona, and transferred to the 

 aquarium tanks. They fed ravenously on small pieces of worms and 

 squid. Measured on 9th February, 1914, six months exactly after 

 transference to the aquarium tanks, they gave measurements ranging 

 from 105 to 130 mm. They had thus almost doubled their length in 

 half a year. Their age may be taken as 9 months, if June be considered 

 the spawning month. 



