Solenogpnathus hardwichkii (Gray). 
f 
Head 35 to 3 5/6 to vent; depth 2 1/3 to 3 in head; 
D. 41 to 44; rings 26 or 27 - 52 to 56; snout 1 2/3 in head; 
eye 5 1/8 to 5 1/5 in snout; pectoral 3 to 4 1/6; inter- 
orbital 44 to 72. Body well compressed, depth quite expanded 
at last half or 2/5; upper keel each side of back far as 
end of dorsal fin base; replaced below by similar parallel 
less distinct median lateral keel extending up at dorsal 
end continuously with upper caudal keel; lower lateral keel 
continuous with lower caudal keel; median ventral keel com- 
plete from breast to vent. Head width 52 6 in its length 
Snout strongly compressed, edge not keeled above but median 
groove below; supraorbital with several knobs, also one at 
snout base above close before eye. Naxillary terminally 
superior, about < in eye. Interorbital well concave; no oc- 
cipital keel though several rugose knobs; opercle rather 
coarsely striate. Gill-opening small slit about long as pu- 
pil and this about 5 times its lenght from pectoral origin. 
Rings quite firm, without spines or keels, each with few 
transverse and many reticulating striae. Dorsal entirely on 
front of tail, extending on 11 or 12 rings; tail end pre- 
hensile. 
Color in alcohol: faded largely uniform brownish. - 
ro 
Length 285 to 385 mm. Three examples. “hough two labels are 
given, one China and the other "Rio Janeiro,” the latter 
is undoubtedly erroneous. The | il sketch gives Japan. 
