DEVELOPMENT AND LIFE HISTORY OF SOME TELEOSTS 
625 
The body has become slightly more elongate, and the head proportionately lower 
and broader. The interorbital now is equal to or wider than the eye in all four species. 
The snout has increased in proportionate length, and is definitely longer than the eye. 
If specimens of equal length are compared it is evident that regius, and especially 
chuss, have somewhat larger eyes than the other species. The longer pectoral of 
regius is quite distinctive at this size, falling short of the length of the head by only 
half the snout, whereas in the other species this fin does not exceed the length of 
the head without the snout. 
The color continues to vary markedly among the specimens of any one species. 
However, earlli is notably darker, and has almost black fins. The dark stripe, broken 
by roundish pale spots at intervals, rather shorter than the diameter of the eye, in 
which the lateral line lies in adults of regius smd jloridanus, only, sometimes is present 
when the fish have reached a length of 60 mm, but often not until much later. Some- 
times the pale spots appear in advance of the black stripe. In regius and jloridanus 
four black dots in a vertical row sometimes are present behind the eye in specimens 
60 mm long, but often not until much later, the upper one of which is in line with 
another spot over the eye and a third one over the posterior nostril. In addition 
about three dark dots are situated on the opercle. A pore is present in the center of 
each black spot. The pores, apparently are present in chuss and earlli, too, but in 
those species they are not surrounded with black. 
Figure 139. — Urophycis earlli. From a specimen 37 mm long. 
Specimens 100 mm and upward in length. — The body in regius, jloridanus, and 
earlli becomes more robust with age, and also rather deeper, the proportionate depth 
being about equal in all these species and contained 3.9 to 5.0 times in the standard 
length. Adults of chuss are notably more elongate, especially large fish, than those 
of the other species, the depth being contained 5.1 to 5.5 times in the length. 
The head becomes broader and more depressed with age. This change is especially 
pronounced in chuss, for in large specimens of this species it is notably wider than 
deep, at the middle of the eyes, whereas in the other species the width of the head at 
the same point is about equal to its depth. 
The larger eye in chuss becomes more noticeable with age. It is quite as wide 
as the interorbital in fish about 200 mm long, and is contained 4.1 to 4.6 times in the 
head. In specimens of about the same size of regius, which have a rather larger eye 
than those of jloridanus and earlli, it is much narrower than the interorbital, and 
is contained 5.1 to 6.5 times in the head. The snout increases in proportionate length 
as the eye decreases, and in all species in specimens 100 mm and upward in length 
the snout is noticeably longer than the eye. It is a little broader in chuss than in 
