540 
BULLETIN OF THE BUREAU OF FISHERIES 
strongly ctenoid. Very short hairlike spines remain visible on the head. The lobes 
of the soft dorsal and anal are high, and slightly pointed. The caudal fin, also, is 
somewhat pointed. The pectoral fins remain moderately short and rounded, whereas 
the ventral fins have increased still further in length, reaching fully to the origin 
of the anal. 
The general color is brownish, some specimens being much darker brown than 
others. Dark dots are visible on the lighter-colored specimens, much as in the 1 1-mm 
specimen, but none are discernible in the darker ones which have scales with blackish 
margins. A pale bar, extending across the nape and down on the preopercle, is very 
distinct, and the snout is about equally pale. The spinous part of the dorsal, the 
basal portion of the soft dorsal, as well as the basal parts of the anal and caudal are 
dark brown, and become abruptly entirely colorless. The pectoral fins remain 
wholly colorless, and the ventrals are black (fig. 28). 
Figure 2 S.—Cliaetodiplerus faber. From a specimen 17 mm long. (Drawn by Mrs. E. B. Docker.) 
Specimens about 20 mm long . — The proportions of the head and body have not 
changed measurably since a length of 18 mm was attained. The only change, worthy 
of note, is that of color. The pale bar at the nape, mentioned in the preceding descrip- 
tion, persists in some specimens, but is missing in others, and some specimens are 
blotched along the sides with the same pale color. Three dark cross bars now are 
present. The first and most distinct one crosses the interorbital, and extends through 
the eye to the chest. The second one crosses the nape, and extends down on and 
be hin d the margin of the opercle, through the base of the pectoral to the abdomen, 
just be hin d the ventral fin. The third one extends from the base of the spinous dorsal 
to the base of the anal spines. Numerous dark chromatophores still are visible on 
the head and body of the lighter-colored specimens. The fins remain unchanged in 
color, except that the brown color extends higher on the dorsal and anal, involving 
fully the basal half of the soft rays. 
Specimens 25 to SO mm long .— The depth in proportion to the length of the body 
has increased still further since a length of about 15 to 18 mm was attained, being 
contained 1.25 times in the length without the caudal fin. The general shape of the 
body now is very similar to that of the adult. The head is proportionately shorter, as 
