318 
n# Teeth icuspid; dorsal and anal subequal. 
~ 1 
p. I louth cleft straight• 
~ 1 
q. ilo isolated pectoral pectoral ray 
Me 1 ano st omia s 
q. An isolated produced pectoral ray 
Echiostoma, 
p. Mouth cleft curved, lower jaw'prominent 
Photoneetes. 
n* Teeth bicuspid; dorsal longer than anal; body very elongate 
Idiacanthus. 
Genus STOMIAS Oken 
St omias OEEM, Isis, 1817, p.1182. (in Stomias CUVIER, Regne Animal, vol.2, 1817, 
p.184. Type 5so x boa RIS80, monot'.rpic. 
Body elongate, compressed. Head compressed. Snout very short. Eye moder¬ 
ate. Mouth cleft extremely large, oblique, lower jaw projects. Teeth pointed, 
unequal, very large on premaxillaries and mandible, fine on maxillaries. Vomer 
with pair of fangs. Palatines and tongue with smaller pointed teeth. Opercular 
region short. Gill openings very wide, ho pyloric appendages, ^ody covered 
with exceedingly fine deciduous scales, scarcely imbricated, in subhexagoral 
depressions in skin. Lower side of body, head and tail with series of photo- 
phores. Dorsal rather long, far postmedian,.opposite anal. Caudal moderate. 
Paired fins rather small, short, latter far postmedian. 
The following imperfectly described and doubtful: 
