32 MR. F. DAY ON RACES AND [Jan. 15, 



similarly treated. These eggs were placed in box 104, and on 

 November 29th, 1883, 16 remained alive. The mortality among 

 these 8000 eggs was as follows : — November 28, December 575, 

 January 1818, February 297, or a total loss of 2718. The young 

 fry were greatly deformed, many had their spines crooked, atrophy 

 of its posterior portion, and a deficiency of the fins generally, more 

 particularly of the caudal. 



May 1 883, the young were about one inch in length and had about 

 11 finger-marks, the foremost four of which were mostly below the 

 lateral line, while the remainder generally crossed it. I received one 

 specimen from Sir J. Maitland, which was 0"8 of an inch long : its 

 head and the anterior portion of its body was natural, but posterior 

 to the dorsal fin a general atrophy had occurred, and although the 

 anal fin was fairly developed, the caudal portion was embryonic. It 

 had six bars along each side. 



July 20th, the cross bands had become much wider, passing down- 

 wards to the belly and upwards towards the back, which, however, 

 they do not reach, but small and irregular bands descend towards 

 the spaces between the cross bands. The broad cross bands on the 

 sides of the body are twice as wide as the interspaces, generally 

 about nine in number, while another crosses over the head, covering 

 a portion of the gill-covers, and a dark band runs along the middle 

 of the dorsal fin. I removed three from the boxes, which were of 

 the following sizes (in inches and tenths). 



No. 1. No. 2. No. 3. 



Total length 1*8 1*6 1-5 



Length of head 05 0-35 0"4 



Length of caudal fin.. 0\3 0"25 0-3 



Height of body 0'5 03 03 



Number of bars 8&10 10&11 9&8 



November 29th, the following fish was removed from the remain- 

 ing 16. 



Total length 2 1 1 inches. 



Length of head 0*5 inch 



Length of caudal fin .... 0"4 „ 



Height of body 0"4 „ 



The finger-marks in this specimen appear to have been about 12, 

 but are broken up into irregular shapes, reticulating over the body, 

 which is of a yellow colour. Similarly along the back the fish 

 appears covered with black spots on a yellow ground. Dorsal fin 

 with two oblique black bands, a light upper edge, and a dark spot at 

 the base of its first dorsal rays. There were 15 rows of scales between 

 the adipose dorsal fin and the lateral line. 



It is interesting to observe that about one in six of the eggs of the 

 Lochleven Trout impregnated by the American Charr failed to hatch, 

 but double that number, or one in three, of the American Charr-eggs 



