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BULLETIN OF THE BUREAU OF FISHERIES 
but the body was much deeper behind vent. Total length of preserved specimens, 
6.5; length to vent, 3.7; greatest depth, 1.9; diameter of eye, 0.5 millimeter. Myo- 
meres, 14 to vent plus 19 behind (not completely developed). Yolk much smaller, 
having changed its rounded egglike shape for an almost square contour with only 
A 3 
Figure 47 — Notropis cornutus chrysocephalus. A, egg with blastodisc formed. B, egg with late embryo 
the corners rounded; oil globule anterior to yolk, not contained within it as in the 
previous stage. 
Pigmentation. — Yellow chroma tophores occur over oil globule and head as 
before, but many large gray stellate ones are added over top and sides of head. 
Chromatophores persist on underside of yolk and those on sides of embryo are ar- 
ranged in an irregular double line from the antero-ventral region of yolk sac to its 
postero-dorsal limit, becoming continuous with the ventral ridge series. Toward the 
end of tail 5 or 6 chromatophores follow up the grooves of the myomeres as black 
Figure 48 .— Notropis cornutus chrysocephalus, larva immediately after hatching, 6.9 millimeters 
streaks, almost to lateral line. A subsurface series starts at base of brain and con- 
tinues along dorsal surface of nerve chord almost to tail, made up of about 17 to 20 
very large roundish stellate chromatophores appearing gray through the myomeres. 
Another group (both surface and subsurface) extends along lateral line (about 10 to 
14), and a third subsurface series starts over yolk sac and continues to caudal about 
halfway between the ventral ridge and the lower margin of notochord. 
7.0-millimeter stage . — Total length, 7.0; length to vent, 4.6; length of head, 1.3; 
greatest depth, 1.0; diameter of eye, 0.5 millimeter. Myomeres, 21 (22) to vent 
plus about 14 behind (incomplete). Head blunt, eye very large, jaws equal; mouth 
terminal, median; air bladder large, one chambered at this 3-day-old stage. 
Pigmentation.— The air bladder is covered dorsally by very large, black, roundish 
chromatophores. About 12 large, round, black chromatophores occur on top of 
