Bull. U. S. B. F., 1909. 
Plate 
m •y| 
1 ir w) 
* B 
wgE~. ^ 
MS jH 
u 
Fig. 2. 
e 
1 
1 
3 
4 
4 566 
Fig. 3. 
Fig. i. Growth stages of lobster eggs and young to illustrate relative sizes attained at Woods Hole, 
Massachusetts, a, ovarian ova in June; h, external egg in invagination stage, July; r, egg-embryo, 
September 1; d, embryo, March 1. In this and following figures, all represented in full size 
from alcoholic materials. 
Fig. 2. Growth stages of young lobsters continued, e. Embryo at hatching (July); 1 (first line), 
first larva, not free from first molt; 1 (second and third lines), first free larval stage; 2, second 
larva; 3, third larva; 4, fourth stage. 
Fig. 3. Growth stages of the lobster continued. 4, Fourth stage; f and 6 , fifth and sixth stages, 
respectively. 
