392 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
anteriorly. Pectoral fin equal to head, upper rays longest. Ventral fin equal to pectoral, outer rays 
somewhat prolonged into tapering filament. Teeth one-rowed, truncate at top. 
Color in life: Ground-color dark-drab; central portion of scales olivaceous, each one with black 
on lower part of posterior edge forming vertical bands on body; axil black; outer border of dorsal fin 
above scaled part black; pectoral dusky olivaceous, black at base; ventral and anal black; caudal 
dusky with posterior border lighter; iris bright yellow. 
It is probable that the specimens here described belong to the species called Pomacentrus nigri- 
cans 1 by Quoy & Gaimard, from the Hawaiian Islands. They differ from Quoy & Gaimard’s descrip- 
tion, however, in having the dorsal fin edged with black, and in being of a general slate color with 
indistinct dusky vertical bands as described above and not ‘ 1 uniform brownish black. ’ ’ The numerous 
specimens examined by me all show these mentioned color characteristics. The original nigricans of 
Lacepede, with the eyes blue instead of bright yellow, is from an unknown locality and can not be 
the same. 
5. Eupomacentrus marginatus Jenkins, new species. Type. 
( Marginatus , in reference to black margin of dorsal fin.) 
Numerous specimens taken by me at Honolulu and others by Dr. Wood and by Dr. Jordan. 
Type No. 49700, U. S. N. M. 
The following are the measurements and numbers of fin rays and scales of four specimens: 
Eupomacentrus 
marginatus. 
No. 1. 
No. 2. 
No. 3. 
No. 4. 
Eupomacentrus 
marginatus. 
No. 1. 
No. 2. 
No. 3. 
No. 4. 
Length in millimeters.. 
96 
92 
80 
73 
Snout 
.10 
.10 
.09 
.09 
Head 
.30 
.29 
. 29 
XI 1 1 
XIII 
XIII 
XIII 
Depth 
.47 
.50 
.49 
Second dorsal ravs 
16 
16 
. 16 
10 
.28 
.30 
.30 
.31 
12 
12 
12 
12 
Ventral 
.27 
.30 
.30 
.31 
Scales (longitudinal)... 
29 
29 
29 
27 
.08 
.08 
.09 
.10 
Scales (transverse) 
3-10 
3-11 
3-11 
3-1 1 
Interorbital 
.09 
.10 
.10 
.10 
Tubes on lateral line . . . 
20 
20 
20 
20 
1 Pomacentrus nigricans Quoy & Gaimard, Voyage Uranus, Zoologie, p. 399, Sandwich Islands; Cuvier &. Valenciennes, 
Hist. Nat. Pois., v, p. 426, 1830; Gunther, Cat. Fishes Brit. Mus., iv, p. 84, 1862, not Holgcentrus nigricans LaeCpede, Hist. Nat. 
Poiss., iv, pp. 332, 367, 1803; locality unknown; collected by Commerson. 
