Genus Ipnops Gftnther 
Ipnops GPNTHER, Ann, Mag. Nat. Hist,, ser. 5, vol, 2, 
» • 
1878, p, 186. Type Ipnops murrayi GWNTHER, raonotypic 
Body elongate, subcylindrical. Head depressed. Snout 
wide, long, spatulate. No eye. Jaws with narrow bands of 
Villiform teeth. Palate toothless. Whole upper surface 
with pair of large, transparent, thin, membrane bones, each 
covering luminous organs. Nostrils rudimentary. Gill rakers 
long, rather numerous. No pseudobranchiae. Branch!ostegals 
10. No air bladder. No pyloric.appendages. Bones of head 
well ossified. Scales large, thin, deciduous. Dorsal pre- 
median. No adipose fin. Anal postmedian, moderate. Caudal 
triangular. Pectoral inserted medianly on side. Ventral in¬ 
serted midway between pectoral and dorsal. 
