390 
BULLETIN OF THE BUREAU OF FISHERIES 
ing, the embryo extends nearly around the circumference of the yolk. Heart action 
may be observed and the embryo is capable of considerable movement. (Fig. 8.) 
Figure 2 .—Anchoviella epse- Figure 3— Anchoviella epsetus. 
tus. Egg with fully deyel- Egg in 2-cell stage 
oped blastodisc 
Figure 4. — Anchoviella epset- 
us. Egg in 4-cell stage 
Newly hatched fish 3.6 millimeters long . — The newly hatched fish is very long 
and slender, averaging close to 3.6 millimeters in length. It is highly transparent, 
Figure 5. — Anchoviella epse- 
tus. Egg in advanced cleav- 
age stage 
Figure 6. — Egg in cleavage 
stage, farther advanced 
than in Figure 5. Note 
bell-shaped blastoderm 
Figure 7. — Anchoviella epse- 
tus. Egg with small embryo 
Figure 8. — Anchoviella epse- 
tus. Egg shortly before 
hatching. Heart action is 
evident at this stage 
having a slight greenish shade on the head, but no definite chromatophores. The 
head is somewhat decurved, and the body segments (myomeres) are very distinct. 
The fin folds are continuous, except where broken by the vent, which is placed slightly 
