IN THE BAYS ON THE SOUTH-EAST COAST OF DEVON. 



479 



inches in length, appear to migrate more or less directly to the Biscuit 

 Dust ground (cf. Nos. 207, 257, and 305), though the capture of one of 

 these large fishes in Torbay on December 17th (No. 1) suggests that 

 even for the larger fishes the actual route may be somewhat to the 

 northward at the commencement of the migration. 



After this spawning migration has taken place the smaller fishes 

 tend to return again to the bays. The largest fishes may either return 

 to the bays (cf. Nos. 57, 75, 139, 10, 252, and 293), or may pass to the 

 south and west of Start Point altogether (cf. Nos. 176, 308, and 277). 



II. TORBAY. 



Two small batches of marked plaice were liberated in Torbay — 

 eighteen fish on October 10th, 1901, and seven fish on November 14th, 

 making a total of twenty-five fish. Six of these have been recovered 

 altogether, for the details of which reference may be made to the 

 detailed table and the following analysis of the sizes of the fishes 

 marked. The experiment was on too small a scale to render discussion 

 of details necessary. 



Table XXI., slwwing the numhers and sizes of Plaice marked in Torlay, 

 and the numbers recovered in successive periods inside and outside 

 the hay. 



III. Teignmouth Bay. 



Three batches of marked fish were liberated in Teignmouth Bay — 

 fifty-three fish on October 9th, twenty-one on November 13th, and 

 twenty-eight on November 29th, making 102 in all. Of these thirty- 

 four have been recovered, eighteen (18 per cent.) in the first half-year, 

 and nine (9 per cent.) in the second half-year, making a total of twenty- 

 seven (27 per cent.) within one year of liberation. The sizes of the 

 fishes marked may be gathered from the accompanying table. 



