110 
PROCEEDINGS OF THE NATIONAL MUSEUM. 
tance forward; the width of isthmus slightly greater than diameter of 
pupil. Gill-rakers on tirst arch 2 + 9; long and very slender. No 
papilhe on inner edge of shoulder girdle. Lower jaw and anterior 
part of throat with about 2-1: slender barbels; the longest somewhat 
shorter than diameter of pupil. Nostrils with rims, the anterior one 
the higher. Cheeks below eye with 4 rows of minute pores. 
Head naked, except occiput and upper edge of opercle, which have 
small scales. Bod}^ completely covered with small ctenoid scales. 
Fins large. Dorsals separate; the spines and rays of about the 
same height; nuich higher anteriorly than posteriori}^; spines, Avhen 
depressed, just reaching insertion of soft dorsal. Anal inserted below 
base of third dorsal ray; the tips of the rays not extending quite so 
far posteriorly as do those of the dorsal, both falling far short of 
base of caudal. Caudal truncate posteriorly; the upper rays slightly 
longer than the lower. Pectoral pointed; the upper edge with fila- 
mentous rays. Ventrals free posteriorly; extending a little bevond 
vent. 
Color in spirits light; t) or 7 large, dusky spots along middle of 
sides; a row of similar spots ])elow these; upper parts of head and 
body with small, elongate spots, indistinct in outline; suborbital and 
cheeks with 4 obli(][ue, parallel, dusky lines, the anterior extending 
from eye forward and downward. Spinous dorsal with 3 or 4 narrow, 
longitudinal, dusky bands; a large black blotch on the posterior mem- 
branes; soft dorsal with 3 bands similar to those of spinous dorsal. 
Caudal with oblong, dusky spots arranged in 3 or 4 zigzag vertical 
rows. Anal with a white margin, suffused with dusky between liiargin 
and base. Pectoral somewhat dusk3^ Ventral without dark color. 
Here described from a small specimen collected at Misaki. 
The species is as 3'et known only from about Tok^^o, in cleai' >vater. 
It reaches a small size. Our specimens are from Misaki. 
[yiveiov^ chin; rf/jni\!, thread.) 
Measnreinmts of A'mosus geneionenius. 
Lc'iiH-th cxjiressed in miilimotcrs 
Dfjith expressed in Ininilrcdthts of length .. . 
iJcptli dl' caudal peduncle 
Length (if head : 
Length of snout 
Length of maxillary 
Width of interorbital space 
Diameter of orbit 
Distance from snout to spinous dorsal . 
Distance from snout to soft dorsal 
Heiglit of longest diirsal sjiines 
Height of longest dorsal rays 
Distance from snout to anal fin 
Height of longest anal rays 
Length ( if caudal peduncle 
Length of C'audal tin 
Length of jiectoral tin 
Length of ventral fin 
Number of dorsal spines 
Number of dorsal rays 
Number of anal rays 
Number of scales in lateral series 
Number of scales In transverse series. . 
54 
50 
37 
37 
](i 
17 
IS 
17 
9 
10 
9 
9 
-"a 
30 
30 
31 
s 
10 
8 
S 
9 
9i 
10 
11 
■-> 
9 
2 
2 
8 
8 
9 
10 
34 
34 
36 
37 
53 
53 
55 
55 
16i 
16 
17 
17 
17i 
16 
18 
20 
56 
58 
58 
57 
12 
12 
16 
12 
22 
22 
23 
23 
20 
20 
23 
25 
22 
23 
25 
24 
20 
20 
■>■> 
22 
« 
8 
8 
8 
Ki 
16 
15 
15 
14 
14 
14 
14 
Gl 
62 
59 
t;2 
'18 
16 
IS 
17 
