SEA-FISHERIES LABORATORY. 205 



millimetres long", with the keeled scales well developed. 

 Only one herring was found in the sample taken on 

 August 8th. The fish caught on August 24th were all 

 sprats. The pelvic and dorsal fins in nearly all the sprats 

 examined in August were exactly the same distance from 

 the snout. The difference in the few exceptions was very 

 slight. The sample taken on September 9th consisted 

 wholly of sprats with well-developed keeled scales. The 

 fish in this collection were typically sprats, but there is 

 considerable variation in the relative positions of the 

 dorsal and pelvic fins. This variation ranged from 

 to 2"3 millimetres, as shown in the table giving the 

 results of the measurements of the September fish. 



