616 
BULLETIN OF THE BUREAU OF FISHERIES 
larger and bad branched. The eyes, too, were now slightly pigmented. The single 
remaining oil globule lay under the abdomen (fig. 126). 
Figure 125. — Urophycis chuss. From egg with well- Figure 126. — Urophycis chuss. From egg with 
formed embryo; 74 hours after fertilization. (From large embryo; 90 hours after fertilization. (From 
a camera lucida drawing by W. W. Welsh.) a camera lucida drawing by W. W. Welsh.) 
Newly hatched U. chuss . — The newly batched larvae ranged from 1.83 to 1.98 mm 
in length. The oil globule lay in the posterior part of the yolksac, or at midlengtb 
of the larva. Large pigment spots were present, principally along the dorsal and 
ventral outline, and also on top of the bead. A few small dots were present on the 
eye, a few larger ones on the yolksac, and about three large branched ones on the oil 
globule (fig. 127). 
Figure 127 .— Urophycis chuss. From newly hatched larva. (From a camera lucida drawing by W. W. Welsh.) 
Specimens oj U. floridanus (?) 2.75 to 3.0 mm long . — The body is rather deep, 
robust, the greatest depth being contained 3.0 to 3.3 times in the length to the end 
of the notochord. The caudal portion of the body is relatively short and deep, 
notably shorter (without caudal fin membrane) than head and trunk, its depth just 
posterior to vent being contained about 2.2 times in its length. Myomeres are 
indistinct posteriorly. Upward of 40 may be counted. (Number of vertebrae in 
regius, 14+31; in floridanus, 16+34; one specimen of each species examined.) The 
head is large, compressed, and is contained about 3.0 times in the length to the end 
of the notochord. The mouth is almost vertical, the tip of the lower jaw being about 
at a level with the upper margin of the eye. The eye is large, fully twice as long as 
the snout, being contained about 2.0 times in the head. The vertical fin membranes 
remain continuous around the tail where there are rather distinct indications of the 
formation of rays. The pectorals are represented by broad short membranes, and 
