A. 
of the Fishery Board for Scotland. 85 
B. 1904 Brood—Hatched in August 1904. 
12. October 27th 1904.—Young lobster, first young stage, cast. 
», November 3rd.—The soft lobster, second young stage, died ; lcm. 
13. 31st October.—Young lobster cast. 
»» November 3rd.—Soft lobster died ; 2°5cem. 
14, June 4th 1905.—One young lobster, the sole remaining, measuring 
1°9cm , cast. 
5 », 14th.—The young lobster died ; 2:lem. 
Casting of zoée occurred as late as October and November and of 
megalops and later stages in October, November, May, and June. 
LENGTH OF DIFFERENT STAGES. 
The iast zoéa stage lasted, in the case of No. 2, from October Ist to 
November 7th, a period of five weeks. 
The megalops stage lasted, in the case of two examples in No. 1, from 
September 30th to October 30th and November 6th, ze. four and five 
weeks respectively, 
Appellof records that two lobsters in the same jar differed from one 
another by a month in arriving at the sixth stage. Casting took place 
also in winter. 
Sizes of the young lobsters which died, and their approximate ages (from 
hatching) at death :-— 
Length Number in 
Stage.* Age. in | preceding 
Cms. List. 
M 2 months | 1:6: 17 £4 
M oat Ge 16 2 
42 gu ine 17 12 
" eat 2:5 13 
+2 At gt 1-7 6 
| Big eee TZ, akc 7 
41 A bad: 1:8. ag 8 
42 Bie Soc 1-7 9 
+3 9 a 2-2 11 
. ‘yr ogee 2] 4 
+3 10 ” 18 10 
* The following contractions are used in this column :—‘‘M,” Megalops; ‘‘ +1,” 
first young stage, 7.c. stage immediately following Megalops; ‘‘ +2,” second young 
stage, &c. 
| TABLE. 
