170 FISHES OF SAN DIEGO—EIGENMANN. e: 
when they disappear within a very short time. Similar patches were 
seen in the smelt. ; 
The first embryo hatched on the eighteenth day, the last on the 24th 
day. They measure from 3.7 to 4.2 millimeters. 
The eyes at the time of hatching are well pigmented; in some of the 
embryos there is a pigment cell above the left eye, in some a cell over 
each eye, but in the latter case the one over the left eye is always the 
larger. A group of pigment spots lies on the nape, the upper two being 
somewhat removed from the rest. There is a broad black disk of 
pigment cells overlying the body cavity. Seen from the side it appears | 
as a curved black bar; as seen from above itis shield-shaped. Theindi- | | 
: 
vidual cells forming this disk are contractile and the disk as a whole _ 
can be contracted to less than one half its normalsize. This is usually 
done just before the larva moves. About thirty-four pigment cells lie _ 
along the base of the anal fin fold. Shortly after hatching the pigment i 
cells near the tip of the tail send out pseudopods into the fin fold anda | 
few days after hatching several pigment cells are seen in the fin fold at | 
this point. <A series of round orange cells margin the dark disk and — 
are variously distributed over the head. These cells can be enormously | 
expanded, giving the fish a bright yellow appearance. 
At this time the mouth opens frequently, the intestines are well de- 
veloped, and seem to contain foreign substance. The branchial fila- 
ments are just beginning to bud. 
The oil globules, two in number, are fixed on the right side in the 
yolk just behind the head. The liver covers the upper left half of the 
yolk. As the yolk is reduced and the posterior intestines are more de- 
veloped the liver is crowded forward and the green bile sack can be 
seen near its posterior border (Fig. 15). 
The dorsal aorta is bent down near the tip of the tail and the larger 
vein is returned above to the place where the aorta is bent down, where 
it crosses it and returns to its normal position. . 
The median fin fold is continuous from the nape to the vent and did | 
not undergo any marked changes before the yolk was absorbed except — 
the formation of primitive rays in the tail. 
There are no marked changes in the embryo from the time of hatch- 
ing to the time the yolk is absorbed. Beyond that stage it was impos- 
sible to keep the young. 
Icelinus australis EK. & E. 
E. & E., 789. 
Known from two specimens taken from the mouth of a Sebastodes on 
Cortes Banks. 
Paricelinus hopliticus EK. & E. 
KE. & E., 789. 
Known from a single specimen taken from the mouth of a Sebastodes i 
on Cortes Banks. : 
