150 
MALACOFTERYGII. 
Above lateral line are a few X spots, as described in my other specimens, 
but on opercle are several round spots, and a few, nearest to the eye, have 
a tinge of brownish red. Contiguous to the lateral line, not more than 
4- an inch above it, and extending to an inch below it, are pale brick-red 
spots, but these are few and widely separated in some places, whilst in 
others several are clustered together. On dissection it proved to be a 
male, and had the milt so developed that it would certainly have been shed 
in the present season. I was pleased to perceive this in connexion with 
the small hook on lower jaw ; it goes to prove what has been stated, that 
the “ hook ” is not in any way used in excavating a hole for the ova of the 
female, but that this operation is effected with the tail. 
January 28 th, 1842. — Dr. M‘Donnell sent me a trout about 16 inches 
in length, which he had received from Mr. Crawford, Crawfordsburn, who 
wished to know what it was : it was a Salmo Eriox ; on one side was a 
circle of scarlet spots nearly the size of a half-penny, and on the other 
were two such circles — the marking of the breeding season. I presume 
it was a male, but the intestines, &c., had been taken out. 
On February ls£, 1842, I received another specimen, 2 feet in length, 
from the same quarter ; a most characteristic S. Eriox in form and colour 
— long, narrow, and uniform in depth ; a grey colour with a few round 
black spots only along the sides. 
Dr. M‘D. says this fish appears about the river at Crawfordsburn in 
winter only, when the stream is large : it is called “ Salmon Trout ” there. 
The same gentleman sent me a specimen from the Nanny Water (County 
Meath) in April, 1844. 
February 21th, 1849. — In Belfast market I saw a S. Eriox to-day, 2\ lbs. 
weight, which, as it laid on the bench with several of S. Trutta , looked 
different from them only in being more equable in breadth — having the 
dorsal and ventral profile less arched. The caudal fin certainly was more 
square at the end and of a coarser structure, but the specimen was as 
silvery and had as many spots as the S. Trutta ; in both of which particu- 
lars the other specimens that I obtained differed (see dates respecting 
them). 
The considerably larger adipose fin, together with the graceless outline 
and the coarse rays of the dorsal fin, proved the specimen to be S. Eriox. 
The only difference in colour of body and fins between it and the S. Trutta 
(of which there were several both larger and smaller than it) was the 
mere extremity of its caudal fin being lightish coloured instead of dusky, 
and its dorsal fin wanting the many spots towards the base that S. Trutta 
exhibited. Although wanting a specimen of S. Eriox to send Mr. Yarrell, 
I did not purchase it, as it was the least decidedly marked of any speci- 
men I had seen. It was taken in the sea. 
July 20th, 1848. — One 18f lbs. weight, caught in the sea near Donag- 
hadee, was brought to Belfast market. It was the largest which the fish- 
monger ever saw : he has seen two others of 18 lbs. He accurately de- 
scribed to me the differences between S. Eriox and S. Trutta. 
March 16 th, 1849. — Numbers of S. Trutta and two of S. Eriox in Belfast 
market, from Ballyhalbert and Ballywalter ; a few S. Salar taken with 
them from 5 lbs. down. 
S. Eriox. The larger weighed 9 lbs., and was 2 feet 4 inches in length : 
it was not in high condition, as the weight implies. 
S. Eriox. One which I bought, 22 inches long, weighed 4 lbs. It is of 
singular uniform breadth throughout, and of a greyish instead of a whitish 
silvery hue, like S. Trutta. It proved to be a female, the ova being the 
