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Show 1884.] HYBRIDS AMONG THE SALMONID^. 39 On July 20th, 1883, I removed the following four from box No. 116 :- inch.es. Bars. Bars. No. 1. Length of fish 2*1 9 II No. 2. „ „ 2*0 8 9 No. 3. „ „ 1*8 9 11 No. 4. „ „ 1*3 10 9 Average 1*8 9 10 In some of these specimens the cross bars were much more up on one side of a fish than they were on the opposite ; one had 9 wide ones, another had 6 to opposite end of dorsal fin, after which they were broken up. All had the light anterior edge to the first dorsal fin. None were deformed. On November 29th, 1883, the following two fish were taken from the tank :- No. 1. No. 2. Length of fish 3*0 inches. 2*8 inches. „ head 0*6 „ 0*6 „ „ caudal fin .. 0*5 „ 0*45 „ Height of body 0*5 „ 0*5 Specimen No. 1. D. 14 (T\). P. 14. V. 9. A. 11 (§). C. 19. L. 1. 136. Colours. This fish had about 13 bars or finger-marks along one side and 11 along the other, but somewhat irregularly placed, most extending to below the lateral line, while they were of varying widths, with generally an intermediate row above and another below. Numerous light spots over the body and head running into irregular bands and rings, especially near the back. Dorsal fin darkest in its lowest half, and with some light spots, the other fins unspotted. The maxilla reaches to beneath the posterior third of the eye. 28 rows of scales between the adipose dorsal fin and the lateral line. Specimen No. 2. D. 13 (A). P. 14. V. 8. A. 11(f). C. 19. L. 1. 124. Colours. This fish had from 11 to 12 bars or finger-marks along either side of the body, but they were much shorter and more irregular hi shape and size than in the last, while below the lateral line it had fewer and smaller intermediate blotches. The marks also alon" the back were more irregular. Teeth along the head of the vomer, none along the body of the bone. 20 rows of scales between the adipose dorsal fin and the lateral line. The following formula I have found existing in some specimens of Scotch and American Charr :- Eows from adipose dorsal Dorsal fin. L. 1. to lateral line. Scotch.... D. 12-14. 125-145. 18-28. American.. D. 12-13. 122-140. 21-26. Hybrids .. D. 13-14. 124-136. 20-28. |
