222 THE ZOOLOGIST. 



occasionally a tolerable-sized Bream are taken on the neaps. 

 The falling-off of large Perch in Norfolk waters has been noticed 

 for some years ; its decrease was laid at one time to the invasion 

 of the Anacharis weed into its breeding haunts. Probably the 

 unrest and turmoil of the waters caused by the great increase of 

 steam, and now motor, vessels have had something to do with 

 destroying the ova of this and other fishes, the swell from their 

 screws beating the reeds with constant commotion : add to this 

 the petrol which floats upon the surface. 



The Bass, known locally as the " Sea-Perch," has become 

 much less frequent in its visits, and is now seldom netted, 

 notwithstanding considerable numbers appear to be found off 

 Aldeburgh, and even up the A.lde estuary. 



The Bubalis, added to my Yarmouth list in 1891, and then 

 believed to be rare, is not by any means so, numbers being taken 

 in the shrimp -nets. 



The Grey Gurnard inshores spasmodically. In a hot 

 summer quite a host may put into the shallows, and even take 

 the baits of anglers : then for years it is conspicuously absent. 

 Last summer a home-coming fisherman saw, and reported to 

 me, an unusual number in the roadstead ; " the sea around the 

 vessel," he assured me, "being alive with them." 



The Lesser Weever is much more plentiful oft' Gorleston 

 (where it runs to a large size) than on the Yarmouth side of the 

 harbour. The quieter wat-ers immediately south of the break- 

 water apparently suit their habits. 



The Scribbled Mackerel (said to be only a variety of the 

 Common Mackerel) wotild seem to be met with annually. I 

 generally manage to see three or four. It is curious to relate 

 that this fish seldom or never occurs of a greater length than 

 fifteen inches. 



I have reason to believe that a migration of the John Dory 

 takes place late in Januai'y and early in February, when they 

 are about the size of one's hand. For some three weeks great 

 ntunbers were taken in the neighbourhood of Cromer Knowle in 

 the trawl-nets. Then followed them, during February, hordes 

 of Greater Weevers, running to about ten inches in length. 



The Scad, or Horse-Mackerel, generally occurs simultaneously 

 with the Mackerel and Herring shoals, and are then of a goodly 

 size — quite as large as the Mackerel themselves. Singularly 



