NO. i:wi . SCORP.^NOTD FISHES OF JAPAN— JORDAN AND STARKS. 123 



23. THYSANICHTHYS CROSSOTUS Jordan and Starks, new species. 



Head '2ii ill Iciiu-th without cHudiil: dt-ptli -Jl. Dorsal X!II, 11: 



>ad: 



inaxi 



Ih 



iry 2t; 



anal Til, 5. Pores of lateral line •J'.]. Kye :]l i 

 iiiteroi'l)ital 51. 



Lower jaw not projecting-. Syinph3'sis with a knoh. ]\Iaxillarv 

 reaehinij;- to 1)elow middle of eye. Anterior end of })reniaxillaries on a 

 level with or slightly above lower margin of orbit. Teeth in rather 

 broad l)ands on jaws; in narrower bands on palatines and vomer; teeth 

 developed in a knob at tip of mandible, which tits in a toothless notch 

 at front of premaxillaries. Interorbital deeply concave and covered 

 with scales, and with a pair of interorbital ridges with a moderate 

 channel between them. Cranial spines large and more erect than in 



Fig. 8. — Thysanichthys cros.sotus. 



the genus SfhastlchfJu/K, not preceded by ridges even at occi])ut. Xasul. 

 preocular, supraocular, postocular, tympanic, parietal, and nuchal 

 spines present. Preorbital with 3 lobes, the anterior one ])roadly 

 round(Kl, the others angulated, but without spines. A ridge of ?> low 

 spines extends along suborbitals. Preo[)ercle with 5 s])ines. the upper 

 3 sharp, i\u\ others blunt, the uppermost oiu^ hooked upward. Two 

 hundred spines present, rather close together. Opei'cle with •! spin(>s 

 of equal size, the ui)p(M' one inclintnl slightly upward. Spines on top 

 of head each with a long lilauicnt behind; the longest ones half eye in 

 length. Similar tilaments behind the preorbital lobes, the spines on 

 su])orbitids, the three upper spines on ])reopei-cle, and a fringe of them 

 along lateral line. Gill rakers very short, about one-foui'th diamctei" 

 of pu])il. 7 of them d(>veloped on antcM'ioi" limb of ai'ch. 



Scales roughly ctenoid. Lateral line lunning in a crooked lin(\ 



