FISHES FROM THE HAWAIIAN ISLANDS. 
185 
the dorsal and caudal bright; ventrals and anal pale, the former washed with red on center; axil 
pale pink; pectoral pale rosy. 
Color in alcohol, uniform yellowish white, paler below; fins all pale yellowish white, the caudal 
lobes somewhat dark. 
This species is related to Etelis oculatus of the West Indies, from which it differs in the somewhat 
larger scales, much longer caudal lobes (9.5 times length of middle rays instead of 4 times, as in E. 
oculatus), and larger eye. From E. carbunculus Cuvier & Valenciennes, from Isle de France, it seems 
to differ in having only 16 instead of 20 scales in a transverse series and in the coloration. 
This species, one of the handsomest of all Hawaiian fishes, is thus far known only from Hilo, 
Hawaii, in the market of which we obtained 13 fine examples, measurements of which are given in 
the following table: 
Field 
No. 
Length. 
Locality. 
Final disposition of speci- 
men. 
Field 
No. 
Length. 
Locality. 
Final disposition of speci- 
men. 
Inches. 
Inches. 
03482 
12. 5 
Hilo.... 
Type, No. 50662, U. S. N. M. 
04086 
13 
Hilo.... 
Cotype, No. 24224, Ac. Nat. 
04082 
13. 25 
. ..do 
Cotype, No. 2722, U. S. F. C. 
Sci., Phila. 
0:3481 
14 
... do 
Cotype, No. 50663, U.S. N. M. 
04087 
12.75 
...do .... 
Cotype, No. 3958, Field Col. 
04080 
15 
...do .... 
Cotype, No. 7474, L. S. Jr. 
Mus. 
Univ. Mas. 
05287 
13 
...do .... 
Cotvpe, No. 9814, Ind. Univ. 
04081 
15. 25 
. . .do 
Do. 
Mus. 
04083 
15.5 
. . .do 
Cotype, No.1701 Bishop Mus. 
05288 
11.6 
...do .... 
Cotype, No. 1498, Cal. Ae.Sei. 
04084 
12. 75 
...do .... 
Cotype, No. , M. C. Z. 
05289 
12 6 
. . .do 
04085 
16.5 
...do 
Cotype, No. 2296, Am. Mus. 
Nat.. Hist. 
Family KYPHOSID^E. The Rudder-fishes. 
29. Sectator azureus Jordan & Evermann, new species. 
Head 4 in length; depth 3; eye 5 in head; snout 3.65; maxillary 4; interorbital 2.4; D. xi, 15; 
A. hi, 13; scales 14-81-20. 
Body elongate, ovoid, greatest depth about at tip of pectoral; head slightly longer than deep, 
compressed; snout very bluntly convex; jaws about equal, maxillary not reaching front of eye; mouth 
small, horizontal; teeth very small, compressed, in a single series in each jaw; minute villiform teeth 
on vomer, palatines and tongue; tongue broad, rounded and free in front; preopercle entire, posterior 
edge very oblique; lower edge of eye on a line with upper base of pectoral, posterior margin well in 
front of middle of head; interorbital broad, strongly convex, a deep groove in front of eye to nostril; 
caudal peduncle rather long, 1.9 in head; origin of spinous dorsal slightly in front of base of ventrals, 
well behind pectoral, its distance from tip of snout slightly greater than depth of body; longest dorsal 
spine 3 in head, last dorsal ray elongate, being one-fourth longer than other rays, its length 3.4 in head; 
third anal spine longest, 4.9 in head; first anal ray longest, 3.4 in head; base of anal 1.8 in baseof dorsal; 
caudal deeply forked, lower lobe the longer, 3.5 in body; pectoral short, slightly longer than ventrals, 
1.8 in head, the spine more than half length of longest ray; scales cycloid, present on head except on 
jaws and in front of eye, very minute on all the fins except ventrals; lateral line concurrent with dorsal 
outline; peritoneum dark gray. 
Color in life, dark steel-blue, becoming paler below; a definite deep blue stripe from snout below 
eye widening on opercle, and thence straight to center of base of caudal; below it a narrow bright 
golden stripe from angle of mouth to lower part of caudal, and then a fainter blue stripe below this; 
a blue stripe from eye to upper part of gill-opening, interspace shaded with green; a deep blue stripe 
from upper part of eye along each side of back to base of upper caudal lobe; upper fins dusky golden 
or olivaceous; ventrals yellow; anal and lower lobe of caudal dirty golden; pectoral translucent. 
Color in alcohol, deep steel gray, brown above, each scale with a very pale spot, the edge pale; 
lower surface whitish silvery; a pale streak of gray behind eye to edge of opercle; dorsal fin gray 
brown like the back; caudal and pectoral whitish; inside of ventrals dusky orange; ventrals and anal 
dusky; inside of pectoral blackish brown. 
Type, No. 50664, U. S. N. M. (field No. 03363), a specimen 15.25 inches long, taken off the shore 
near Heeia, Oahu Island. 
This species must be very rare, being unknown to the fishermen and only the single specimen 
having been obtained by us. 
