FOURTEEN TELEOSTEAN FISHES AT BEAUFORT, N. C. 
451 
not quite reach the base of the caudal. Dermal flaps at the tip of the lower jaw are 
variously developed and occasionally absent. Since these appendages are quite 
delicate and since the two on the same fish often are of very unequal size, it seems 
probable that they often are injured and occasionally lost, at least in preserved speci- 
mens. The pigmentation on the pectoral and ventral fins has become concentrated 
in certain places in such a way as to form spots. No other important changes in 
color are evident. However, some specimens of this size, as well as somewhat smaller 
Figure 66 . — Cypselurus furcatus. From a specimen 18 millimeters long 
ones, have indications of dark crossbars, formed by a concentration of black chromato- 
phores. 
Specimens 85 millimeters long .- — -The shape and form of the adult has been very 
closely approximated. The slight keel along the ventral edge of the body in which 
the lateral line is situated is now visible and causes the body to appear slightly 
quadrangular in cross section as in the adult. The dermal appendages, inserted at 
the tip of the lower jaw, are large (about as long as the eye) at this age and have a 
Figure 67 .— Cypselurus furcatus. From a specimen 36 millimeters long 
scalloped outer margin which is black, in contrast with the pale color of the rest of 
the tentacle. The caudal fin has definitely acquired the shape of that of the adult, 
being forked and having a small upper lobe and a much larger and longer lower one. 
All the specimens at hand of this size have dark rings around the body, formed by a 
concentration of chromatophores. The first dark ring runs across the chest and the 
base of the pectorals, the third one crosses the base of the ventrals, and the sixth 
and last very indefinite one lies on the base of the caudal. The pectorals and ventrals 
are blotched with black and the dorsal bears a few dark chromatophores. The other 
fins remain plain translucent. The body, of course, is fully scaled at this size. How- 
