yo 
PROCEEDINGS OF THE NATIONAL MUSEUM. 
VOT,. XXIV. 
It may ho known ffom the other species of the Gfenas by the iil)sencc 
of vertietil color hands on the body, its briglit stripes running 
horizontally. 
( V!r(jo^ a vir<>'in, in allusion to the gay coloration.) 
Maisuremeritx <if ItrrogohhiR riri/o. 
LeiiKth in milliiiietors 
l)ei)th exprussed in liundrodths of length . 
Depth of ciUidal peduncle 
Length of head 
Length of snout 
Width of interorbital space . . . 
Diameter of orbit 
Distance from snout to spinous dorsiil 
Distance from snout to soft dorsal 
Height of longest dorsal spines 
Height of longest dorsal rays 
Distance from snout to anal fin 
Height of longest anal rays 
Length of caudal peduncle 
Length of caudal fin 
Length of pectoral tin 
Length of ventral fin 
Number of dorsal spines 
Number of dorsal rays 
Number of anal rays 
Number of pectoral rays 
Number of scales in lateral series 
Number of scales in transverse series 
Klli 
158 
144 
u; 
15i 
17 
10 
10 
10 
25 
24 
24 
9 
8^ 
9J 
5 
5 
5 
4^ 
4i 
5 
31 
30 
30 
51 
51 
52 
U 
11 
11 
9^ 
10 
10 
56 
56 
55 
9^ 
10 
10 
lU 
m 
11 
20 
21 
21 
20 
20 
21 
15 
14 
14 
8 
8 
8 
28 
26 
27 
27 
27 
27 
22 
22 
23 
133 
130 
136 
41 
40 
39 
34. PTEROGOBIUS ELAPOIDES (Gunther). 
f,'()]tinx cliipiiidfK (jtiNTiiEiJ, Proe. Zonl. Soc. LoiKion, 1S71, p. ()()5, pi. lxiii, fip. 
1). Locality unknown, supposed to he t'roni Japan. Coll. A. Adams. 
Pter<)<j(tl>'ni^ ('lap(>!<lr.<t is very closely related to P. daini'io. ^^'e 
have been able to find no striking- ditference l^etween the two except 
in color. The former is lighter, the ground shades pinkish-brown and 
the dark cross-bands dark brown instead of deep brownish black, as 
in the latter. The bands are narrower in P. el<vpoi(les^ and there is, in 
addition to those on the body, alike in the two species, a distinct ver- 
tical band on base of caudal. This band on the caudal serves to dis- 
tinguish the species at a glance. 
In life the dark rings of the l)ody are liordertnl liy narrow bands of 
bright lemon yellow. The dorsal and caudal tins are dull, brick red. 
The range of the species is evidently farther to the northward than 
that of Pterogohlus dalmio, both species living in clear water about 
rocks in the open sea. 
In the original descrii^tion by Dr. Giinther the habitat of this species 
was doubtfully assigned to the seas of Japan. We ol)tained many 
specimens. at Aomori, at Hakodate, from Matsushima l^ay, and from 
Utatsii in Noto. P. L. Jouy collected numerous individuals at Fusan, 
Korea. 
{E/{(pf^, the coral snake; sidos^ likeness, from the ri'semblance of 
the cross-bands.) 
