DESCRIPTIONS OE FISHES FROM THE HAWAIIAN ISLANDS. 
397 
snout. Posterior lateral edges of carapace deeply reentrant. Caudal peduncle, measured on side, equal 
to snout. Pectoral 5.5 in length. Longest dorsal rays 1.66 in head. Longest anal rays a little shorter 
than head. Caudal rounded, median rays equal to length of head. Carapace formed of hexagonal 
plates; plates varying a little in size, the larger ones about 3.5 in width of front part of interorbital, 13 
plates in longitudinal series from interorbital band to front of dorsal, 10 on side of body from al >ove pos- 
terior edge of pectoral to end of carapace, 13 along median ventral line from chin to anus. Plates above 
pectoral not distinctly defined. Surface of carapace covered with small, even-sized tubercles evenly 
distributed or somewhat grouped at the center of the plates. Five specimens in the collection present 
but little structural variation. The hump on the forehead below the level of the upper rim of the eye 
is very conspicuous on all. 
Color in life: General color dark, nearly black, lighter patch below each eye, belly dark blue; 
irregular golden band between eyes on top of head; back covered with many small white dots; sides 
with golden dots; caudal peduncle black with row of golden spots on side, white dots on dorsal 
surface; axil blue; fins dusky, posterior half of caudal lighter; iris white with orange spots. The color 
of different specimens varies considerably. The spots on the back do not correspond with the plates 
of the carapace and are more numerous than the plates. Two specimens apparently had the sides blue 
9. Ost ration camurum Jenkins, new species. Type. 
in life, one with dark centers to the plates, the other with a dark spot in the center of the upper plates 
of the side, and a white spot surrounded by a black ring on each of the lower lateral plates. In 
alcohol all the specimens have a brownish color, dusky in places; a yellowish interorbital stripe and a 
large area below the eye of the same color; the basal half of the caudal fin dark brown, contrasting 
conspicuously with the colorless distal half, the two regions being separated by a crescentic line, 
concave posteriorly. 
Four specimens obtained by me at Honolulu and two by Dr. Wood are identical structurally 
with one in the Stanford University collection taken by Messrs. Snodgrass and Heller, at Clipperton 
Island, off Mexico. The latter, however, has black spots on the back instead of white spots, and a 
row of white spots just below the upper lateral edge of the carapace. 
Type No. 49697, U. S. N. M. 
The following are the measurements and the numbers of fin rays of tive Hawaiian specimens: 
Ostracion camurum. 
No. 1. 
No. 2. 
CO 
6 
Jz; 
No. 4. 
No. 5. 
Ostracion camurum. 
No. 1. 
No. 2. 
No. 3. 
No. 4. 
No. 5. 
Length in millimeters . . . 
104 
102 
94 
88 
86 
Eye 
.10 
.11 
.11 
.12 
.12 
Depth 
.34 
.34 
.34 
.34 
.34 
Interorbital 
.23 
.24 
.23 
. 9.9. 
.24 
Width of body (dorsal).. 
.34 
.35 
.32 
.35 
.35 
Snout 
.20 
.20 
. 9.9. 
.23 
.23 
Width of body (ventral) . 
.38 
.37 
.39 
.40 
.40 
Caudal peduncle (dorsal 
Pectoral 
.18 
.21 
.20 
.20 
.20 
edge) 
.13 
.13 
.15 
.13 
.13 
Longest dorsal ray 
. Hi 
.15 
.17 
. 17 
. 16 
9 
9 
9 
9 
9 
Longest anal ray 
.13 
.14 
.15 
.15 
.14 
Anal rays 
9 
9 
9 
9 
9 
Longest caudal ray 
• 27 
.28 
.26 
.25 
.27 
Pectoral rays 
10 
10 
10 
10 
10 
