268 
PACIFIC SCIENCE, Vol. IX, July, 1955 
reaching between vent and third anal spine; 
inner rays bifid, not thickened. 
Caudal rounded. 
Head naked above and laterally anterior to 
preopercle; nape, preopercle, and opercle with 
cycloid scales; scales of preopercle in seven 
to nine forwardly sloping oblique rows; five 
scales in horizontal series across widest part 
of preopercle; opercle with six large scales, 
each about twice depth of preopercular scales; 
TABLE 3 
Summary of Certain Counts Made on Species of the Genus Plesiops 
Numbers in the Body of the Table Refer to Individuals 
(Symbols (+) represent the range of variation determined from the literature in the instances in which little or 
no material was available) 
P. nigricans 
P. multisquamata 
P. cephalotaenia 
P. oxycephalus 
P . coeruleolineatus 
P. corallicola 
Dorsal fin X 
1 
XI 
1 
79 
XII 
1 
+ 
18 
8 
3 
64 
XIII 
1 
6 
6 
1 
7 
1 
+ 
19 
8 
76 
64 
Anal fin III 
1 
+ 
18 
8 
82 
59 
7 
1 
1 
1 
8 
1 
+ 
17 
7 
81 
59 
Pectoral fin, 17 
1 
total rays 18 
4 
1 
19 
13 
3 
1 
1 
20 
+ 
2 
4 
6 
14 
21 
+ 
+ 
29 
41 
22 
+ 
+ 
37 
9 
23 
+ 
12 
Gill rakers, lower limb 5 
1 
of first arch 6 
5 
7 
42 
8 
2 
2 
23 
11 
9 
6 
5 
5 
26 
10 
5 
1 
1 
14 
11 
+ 
3 
1 
12 
1 
+ 
13 
+ 
Total gill rakers, 9 
1 
first arch 10 
3 
11 
25 
12 
27 
13 
2 
17 
4 
14 
4 
3 
3 
12 
15 
3 
3 
1 
23 
16 
+ 
4 
2 
11 
17 
+ 
3 
2 
18 
1 
+ 
19 
+ 
