468 MR. P. DAY ON THE BREEDING OF SALMON. 



DESCRIPTION OF THE PLATES. 

 Plate LIII. 



Fig. 1. Salmo salar in the parr livery, a male with ripe milt, hatched March 1881, killed November 27th, 



1883. Drawn of natural size. 



Fig. 2. Caudal fin shown in two conditions of expansion ; natural size. 



Fig. 3. Salmo salar in the smolt livery, a female with eggs only just visible, hatched March 1881, killed 



November 1883 ; natural size. 

 Fig. 4. Caudal fin ; natural size. 



Plate LIV. 



Fig. 1. Salmo salar, a grilse that had been just spawned, hatched March 1881, killed December 9th, 



1884. Sketched from the specimen, and of natural size. 

 Fig. 2. Caudal fin ; natural size. 



Fig. 3. Scale from above lateral line and below adipose dorsal fin, magnified 20 diameters. From a 

 photograph of the specimen on a glass slide 



