180 CONTRIBUTIONS TO AUSTRALIAN ICHTHYOLOGY, 



three lowest series of scales with a median longitudinal golden 

 bar, forming together continuous bands, the upper of which is 

 faintest and does not extend forward be3'ond the tip of the 

 pectoral ; lips and snout violet : dorsal and anal fins violet, 

 with a narrow dark marginal band; ventrals and pectorals gray, 

 more or less tinged with yellow; caudal yellow, broadly tip])ed 

 with violet. 



Etymology : — yvfxpos, naked; yvados, jaw. 



Distribution: — Pelsart Island, Houtman's Abrolhos. 



The description is taken from a single specimen captured by 

 Mr. Lea and measuring 191: millimeters. It seems to agree more 

 closely with Bleeker's P. yymnoynathos than with any other 

 species, but I am by no means assured that it is that species. 



The following family not having hitherto been recorded from 

 Australian waters, it is advisable, on behalf of local ichthyologists, 

 to supplement the late Sir William Macleay's Catalogue by a 

 more extended notice than would otherwise be necessary. 



CEPOLID^. 



The Band-Fishes. 



Body elongate, compressed, provided with minute, cycloid 

 scales. Lateral line incomplete. Head small, compressed; snout 

 short and blunt. Mouth anterior, with rather wide, oblique 

 cleft; lower jaw slightly projecting. Premaxillaries protractile; 

 maxillary exposed, strongly dilated distally, reaching to below 

 the eyes. Teeth in the jaws moderate, unequal, more numerous 

 in the upper, some of them caninoid; vomer, palatines, pterygoids, 

 and tongue toothless. Nostrils approximate. Eyes large, sub- 

 lateral. Gill-openings wide ; gill-membranes separate, almost 

 wholly free from the isthmus; gills four, a slit behind the fourth; 

 six branchiostegals ; pseudobrauchiaj present. Vent anterior, 

 without prominent papilla. Dorsal and anal fins long, consisting 

 entirely of articulated rays, more or less continuous with the 

 caudal; ventrals small, thoracic, close together, with a feeble 

 spine and five soft rays; pectorals small, submedian. Air-bladder 



