752 MR. F. DAY ON HYBRIDS [ Dec. 19, 
from the lateral line to the base of the ventral fin. Row of scales 
on the upper half of the body very irregular. Colour: On removal 
from the water it was silvery with a rich purple gloss, from 7 to 8 
irregularly placed rows of black spots were present on the fore part 
of the body, gradually decreasing in number to 3 or even 2 in the 
caudal portion ; no parr marks on the sides, 4 large black spots on 
the opercle and 2 more on the cheeks. Fins greyish, darkest in 
Poe, 
tA 
, 
"aD 
wb Bis 
ne, 
th, 
. 
RS 
oe 
Te 
Head of Hybrid Salmon (Tay), ¢. 
the centre, the dorsal with black spots and a white anterior edge. 
Testicles present but rudimentary, no milt being present. 
December 24th, 1881, about 20,000 eggs of Lochleven Trout were 
fertilized with salmon-milt; they hatched on March 9th, 1882, or 
in 75 days. Of these, on November 15th about 1250 were alive at 
Howietoun. The largest example was 43 inches in length, and four 
of these fish are on the table. 
B.x. D.13 (4). P.13-14. V.9. A.11 (8). C.19. 
L. 1. 116-118. LL. tr. 25-26/30-32. Czec. pyl. 61-78. 
No. 1. No.2. No.3. No. 4. 
Length of example .......:.ccccccceseeeeee 4:5 34 zal 40 
Lengilajol head 2..2.5.<0.Siestesag estes 09 0-7 08 O08 
Length of pectoral fin ..................06 08 06 06 O06 
Length from snout to base of dorsal... 1°7 is: 7 16 
Length from snout to base of caudal... 3°8 3:0 36 8634 
Diameter of eye ....... wince pneMebe gare 2 015 O02 02 
From end of snout .......ccssceseseeseeeee 025 02 02 0:23 
part” coassersncetiacaceuiaotectes trsagtee ted 03 O27 Oty 05 
Heightiot body cucscteatetss.ccsctesertns 0:8 O65 "Ox 0% 
In example No. 1 the length of the central caudal ray is half that 
