FISHES OF HAWAIIAN ISLANDS. 
525 
Genus 268. HALIEUTIEA Cuvier & Valenciennes. 
Head very large, broad, depressed, its outline nearly circular; cleft of mouth wide, horizontal; 
jaws with small eardiform teeth; no teeth on vomer or palatines; skin everywhere covered with small 
stellate spines; forehead with a transverse bony ridge, beneath which is a tentacle, retractile into a 
cavity, the only rudiment of the spinous dorsal fin; soft dorsal and anal very short, far back; gills 21, 
the anterior gill-arch without laminae. Branchiostegals 5; vertebra? 17. Pacific Ocean. 
The single Hawaiian species of this genus is fully described in Section II. 
Unlieutsea Cuvier & Valenciennes, Hist. Nat. Poiss., XII, 455, 1X37 ( stcllntus ) . 
Genus 269. DIBRANCHUS Peters. 
Head merged in body, very large, much depressed, forming a broadly ovate disk, with margin 
laterally prolonged; cranial portion not elevated; the interorbital area low, narrow, with orbits partly 
superior; supraoral cavity large, protected above by a transverse bony ridge; mouth terminal, hori- 
zontal, wide; lower jaw convex; teeth in eardiform bands, none on vomer or palatines; gills 2, no gill- 
rakers, gill-openings small, anterior to pectorals; rostral tentacle retractile, trilobate at tip; skin with 
numerous strong stellate spines above and below, those at margins of disk especially strong, 3-pointed. 
Distinguished from related genera by the reduction of the gills to 2 pairs. 
The 2 Hawaiian species of this genus are fully described in Section II. 
Dibranchus Peters, Monatsber. Kon. Ak. Wiss. Berlin, 1876, 736 (atlanticus). 
