1053 * 
Genus Mataeocephalus Berg 
Mataeocephalus Berg, Commun. Mus. Buenos Aires, vol. 1, p. 43, 1899* * 
5S“— 
% 
(Type Coelocephalus aeipenserinus Gilbert and Cramer, virtually. 
Mataeocephalus Ber^ proposed to replace Coelocephalus Gilbert and 
Cramer .) 
Coelocephalus (not Agassiz) Gilbert and Cramer , Proc. U. S. Nat. Mus., 
vol. 19, p. 422, 1896. (Type Coelocephalus aeipenserinus Gilbert 
and Cramer , orthotypic.) 
ssJ53S8SS5SS 
Body and tail slender, compressed. Head depressed, upper 
profile nearly straight. Snout projects, with distinct angulation 
produced by ridge extended downwards before nostrils and ending in 
* 
bony prominence or cluster of spines on lateral edge of snout divid¬ 
ing an anterior marginal portion, converging with that of other side 
into snout tip, which usually formed by spinigerous bifid tuberclej 
posterior portion strengthened by suborbital ridge, which extends 
below hind edge of orbit and divides cheek into upper, somewhat slop¬ 
ing and lower nearly horizontal part. No spinous occipital ridges. 
Head below usually naked, also nasal area. Mouth small, entirely 
inferior, upper jaw less than l/3 of head. Gill membranes unite below 
preopercle ridge* Branchiostegals 6 or 7* Scales imbricate, spinules 
arranged in parallel or nearly parallel rows* Second simple dorsal 
ray pungent, usually sharply serrated. Pectoral below and somewhat 
before first dorsal origin. Ventral below pectoral, outer filamentous 
ray prolonged and no naked pit between fin bases. Vent close before 
front of anal. 
Tropical deep seas. _ 
