NO. 1365. THE AGONID.E OF JAPAN— JORDAN AND STARK:^. 579 



Head 4 in length to base or caudal; depth at base of ventrals, 4. 

 Dorsal IX — 6; anal, 11; lateral line plates 27. Eye, 3|^ in head; great- 

 est interorbital width V)otween tips of supraoculiiv spines. 2; maxil- 

 lar}', 8|; snout, -1. 



Supraocular spine triangular; its posterior side sloping at about the 

 same angle as its anterior side; its base extends above the entire ej-e 

 and its apex is directl}' above the pupil; at its base posteriorly is a 

 small spine placed above a point midway between posterior border of 

 pupil and i)osterior ])order of eye. The anterior border of the large 

 spine forms a steep unbroken curve around front of e^^e to a level 

 with lower margin of eye, becoming nearl}^ vertical in front of eye. 

 Interorbital space widely V-shaped, a slight longitudinal ridge at its 

 middle. A ridge runs backward from supraorbital rim and ends in a 

 blunt upward and outward directed spine with a small spine at its base 

 anteriorly; l^etween this and its opposite fellow is a depression. Nasal 

 spines sharp, rather long, and curved l)ackward. A blunt spine above 

 opercle, probably on post- temporal, and a similar one on edge of pre- 

 opercle, not widening outward and curving backward, making a deep 

 notch behind it, as in Agonoinalus jordani. A spine, sharper than 

 the others, just behind lower posterior orbital margin. A small, sharp 

 spine just above base of upper pectoral ray. A longer carved spine 

 behind it above middle of pectoral. Maxillary reaching to below 

 anterior margin of pupil. Teeth fine, villiform, in narrow bands on 

 jaws; none on vomer or palatines. Snout nearly horizontal to nasal 

 spines, then turning nearly verticalh' downward to mouth. Lower 

 jaw included. A long barbel, half as long as head, at tip of snout; it 

 is widened at the base and extends around the entire front of snout. 



A row of 2f) plates bearing hooked spines extends along the side 

 of back from below fourth dorsal spine to the caudal; the second 

 spine is smaller than the adjoining spines and slig-htlv out of line Avith 

 them. A row of 2it similar, slighth' larger spines extends along the 

 lower part of sides to the caudal. A row of 6 small blunt spines on 

 side of belly curves inward to the first anal ray. A couple of tiny 

 spines at side of interval between dorsals. The area on side of bod}^ 

 between the upper and lower series is concave. The caudal peduncle 

 is four cornered in section, with the long sides bowed inward toward 

 each other. The lateral line runs along a series of small plates wliich 

 are rather scattered posteriorly. 



Spinous dorsal double curved in its upper outline; convex at each 

 end and concave at its middle; the length of the rirst spine is contained 

 3| in body or equal to depth of bodj' below it; the second spine is but 

 slightly shorter; the last spine is 1| in head; it is connected to the 

 bod 3^ by a wide membrane which covers 5 plates. The first dorsal 

 spine is rough, with small prickles. The rays of the second dorsal 

 are very stiff; the first is five-eighths of the si^cond in length: the 



