360 
BULLETIN OF THE BUREAU OF FISHERIES 
5.0-millimeter stage . — Total length, 5.0; standard length, 4.8; length to vent, 2.4; 
length of head, 1.0; diameter of eye, 0.27; greatest depth before vent, 1.0; depth 
behind vent, 0.45 millimeter. Myomeres, 8 to vent plus 15 to 18 behind. Head 
small, mouth very large; body extremely deep and compressed. Some of yolk re- 
maining, but even in this small specimen the large, short intestine already beginn ing 
to coil; oil diffused through yolk region. Marginal fin fold originating over middle of 
yolk region, low, continuing around tail; deeper at vent; caudal lophocercal; pectorals 
short and rounded. 
Pigmentation. — Chromatophores are very large on ventral and lateral aspects 
in anterior part of stomach region, and 1 or 2 occur shortly before the vent. The 
only other pigmentation consists of a series of about 6 small chromatophores along 
ventral line of tail. 
5 .1 -millimeter stage . — Total length, 5.1 ; standard length, 4.5; length to vent, 2.25; 
length of head, 1.1; diameter of eye, 0.3; greatest depth before vent, 1.2; depth behind 
vent, 0.36 millimeter. Myomeres, 8 to vent plus 15 behind. A slightly later stage 
than preceding, although the length is practically the same. Differs from the pre- 
Figuke 82. — Lepibema chrysops, 10.5 millimeters 
ceding stage principally in the deeper body. Yolk more nearly but not completely 
absorbed. 
Pigmentation. — Chromatophore marking is identical with preceding stage except 
for a very few small additional dorsal spots. 
10.5-millimeter stage . — Total length, 10.5; standard length, 9.0; length to vent, 
5.5; length of head, 2.0; diameter of eye, 0.6; greatest depth before vent, 2.0; depth 
behind vent, 1.2 millimeters. Myomeres, 8 to vent plus 15 behind. Basal elements 
