620 
BULLETIN OF THE BUREAU OF FISHERIES 
regius and chuss. The specimens with the larger number of rays or fulcra in the 
dorsal certainly are not regius, and therefore apparently must be chuss. 
It has been pointed out that in smaller specimens the caudal portion of the body 
was proportionately longer and more slender in chuss than in regius. This difference 
persists, but it is no longer pronounced. The distance from the vent to the tip of 
the notochord, in specimens about 7.0 mm long, is contained in the length of the fish, 
without the caudal fin, about 2.25 times in regius, and 2.1 times in chuss, and the 
depth just posterior to the vent is contained in the length of the tail 2.1 times in 
regius, and 2.5 times in chuss. 
The body in both species has become more elongate, the depth in regius being 
contained 3.4 times in the length without the caudal fin, and 3.6 times in chuss. 
The color is variable among specimens of both species, though not essentially 
different from smaller ones already described (figs. 132 and 133). 
Specimens 9.0 to 11 mm long. — The body in regius, as well as in chuss, has con- 
tinued to grow proportionately more elongate, though it remains decidedly com- 
pressed. The depth in regius is contained 3.8 to 3.9 times in the standard length, 
and in chuss 4.0 to 4.3 times. The caudal portion of the body (without the caudal 
fin) is alm ost exactly equal in length to the head and trunk in regius, whereas in chuss 
it is noticeably longer. It is also deeper in regius, the depth just behind the vent 
being contained 2.9 times in the distance from the vent to the base of the caudal, 
whereas it is contained 3.1 to 3.3 times in that distance in chuss. 
The mouth has become much less strongly oblique. However, it remains a little 
more strongly oblique in regius (wherein the tip of the lower jaw is about at the level 
of the lower margin of the eye) than in chuss, in which it is well below the eye. 
The first dorsal is partly formed in both species under discussion, and is situated 
over the base of the pectoral. The second dorsal is well enough developed to permit 
a f air ly accurate count of the rays, and especially of the fulcra. In regius 47 and 50 
fulcra were counted, and in chuss 55 and 56, in two specimens of each species examined. 
