1074. 
Head spineless ox* w .1 thout serrations. Mouth typically protruding, 
cleft very oblique. Maxillary with outer blade and with inner hind projec¬ 
tion. which connected with its fellow below premaxillary spines; no supple¬ 
mental maxi Harp. Teeth usually feeble or absent, never strong. Gills 4, 
pectinate, fseudobranchiae well developed or absent. Branchiostegals 6. 
Air bladder without pneumatic duct (physoolistic). Supraoccipital developed, 
separating parietals; no opisthotic; or orbitosphenoid. anteriorly in contact 
mtn mesofchmoid, which wholly or in part behind prefrontals. Pectoral arch 
suspended from skull. Vertebral column of solid centra, which co-ossified 
with arches, scales, when present, thin, deciduous or reduced to scattered 
tubercles. Verticals fins spineless, except sometimes 1 or 2 first dorsal 
rays. Pectorals with horizontal or subhorizontal base. Ventrals, when 
present, spineless, little behind pectorals. A single dorsal. Caudal-well 
developed or obsolete. 
bidely different fishes, pelagic or bathypelagic, grouped in this 
order. 
