168 NOTES AND MEMORANDA. 
Three of the males were ripe, and the other three probably 
became ripe later in the season. ‘Two of the females were nearly 
ripe, and the smallest was killed and found to be still immature. 
The flounders in the large tank mentioned in the previous paper 
were examined on May 13th. There were fifty altogether surviving 
out of sixty-five counted in the spring of 1892. Thirty-two of the 
fish were measured and examined ; the sizes ranged from 5 inches to 
11} inches. As it was late in the season many of these fish may 
have finished spawning, only two females showed reproductive 
activity, one was ripe, and another nearly so. Owing to pressure 
of other work it was not possible to give more attention to these 
experiments, but I have thought it worth while to record the sizes 
and the indications as to the relation between age and breeding.— 
ba eg 
Rearing of Fish-larve.—F rom 
reared in the aquarium and the 
a number of healthy eggs, anc 
hatched on Apsl 2c.” "MARINE BIOLOGIGAL LABORATORY. 
belonging to the Dannevig app: 
tanks. On the 22nd I turned t! 
protecting the overflow pipe by Received 
keeping a slight but constant i 
24th the yolk was almost ent . 
some of the minute suspended | Given by / ) Ou LAD OC, 
minced worm in a jar of sea- 
readily, and could be seen de Place; 
the water. They lived and Be *,* No book or pamphlet is to be removed from the Labx 
began to diminish in numbers. oratory without the permission of the Trustees. 
Accession No. 
Rinotior lot of eggs procure 
on April 29th, and turned int 
days afterwards. They bega bel Lyte ges: ol bh ured Ae koran 
until May 9th, when the numbers hese to diminish. I found the 
dead ones sticking to the screen which protected the outflow. On 
May 13th two were seen still alive, fourteen days old, and after this 
date none were left.—J. T. C. 
