456 fishes from south sea islands, 



Trachycephalus Bankiensis. 

 D. 7/14. A. 2/10. 



Height 2s, head 3g in the length, suborbital J nearly of the 

 head. 



Head above nearly to base of dorsal, armed with short columnar 

 spines, bearing spinelets on their tips much as in Monacauthus 

 trachylepis. Rest of head and body naked, skin finely wrinkled. 

 Gape very oblique. Lower jaw thick and prominent. Profile of 

 head very obtuse. Ventrals as two minute spines. 



Length 1 — 1J inches. Locality, Banks Group. Collector, Mr. 

 C. F. Browne. 



Tetrodon insularum. 



Nasal process single, open fore and aft. Lips, cheek, chin and 

 caudal peduncle from before the dorsal fin, naked. Operculum 

 and axillary band slightly, and the rest distinctly spinose. Osseous 

 interorbit shorter than snout. Eye considerably nearer tip of 

 snout than to gill orifice. Interorbit rather convex. Blue black 

 above, with irregular dark spots, nearly obliterating a dingy yellow 

 ground colour, and descending on the flanks as broad, on the 

 cheeks as narrower, vertical streaks. Below white. 



Loc. Api. Collector, Mr. C. F. Browne. 



Tetrodon l^evis. 



Nasal tentacle single, open fore and aft. Osseous interorbit 

 broader than snout. Eye further from snout than from gill orifice. 

 Interorbit convex. Back broad, rather depressed. 



Naked, smooth, except on the abdomen, which is covered with 

 spine-pores. 



Brownish black above, white below. An indistinct broad 

 inter-orbital band, and one crossing the back behind the pectoral. 

 A broad black oval patch descending from the base of the dorsal 

 and another similar blotch on the root of the caudal. 



Length, 5 inches. Loc, South Seas. Collector, Mr. C. F. Browne. 



