300 
5. Fam. DOMNCHTHYIDAE. 
Dorsal fin short, with a pungent spine and 7 soft rays, its 
origin about midway between pectorals and ventrals. Adipose 
fin short, totally above the long anal, which has 28—30 rays. 
Pectorals lateral, rather low down, with a pungent spine. 
Ventrals 6-rayed. Caudal deeply forked. Head depressed, its 
dorsal shields covered by thin skin. Snout depressed, very 
broad; mouth very wide, terminal, jaws equal. Nostrils sepa- 
rated by a narrow interspace without barbel. A pair of long 
maxillary, mandibulary and mental barbels. Eyes small, with- 
out free orbital margin, situated behind the corner of the 
mouth. Minute teeth in one row in the jaws and a few in 
a row quite laterally on each side of the palate. Branchios- 
tegal membranes narrow, totally free from isthmus and from 
each other. 
i Doiichthys M.-Weber., 
(Max WepsErR, Nova Guinea, IX. livr. 4, 1913, p. 532). 
Snout depressed, very broad, mouth very wide, terminal, 
jaws equal. Anterior nostril at the border of the snout, the 
posterior nostril at a distance of its own width behind it. No 
nasal barbel; six long, slender barbels: maxillary, mandibulary 
and mental. Headshields covered by thin skin, occipital process 
nearly touches the narrow basal bone of dorsal spine. Eyes 
small, without free orbital margin, situated behind the corner 
of the mouth. Operculum a rhombic bone suspended by a 
membrane and very movable. Dorsal with 7 rays and a pungent 
spine, situated midway between pectorals and ventrals. Adipose 
fin short, above the long anal. Pectorals with a serrated spine. 
Ventrals 6-rayed. Caudal deeply forked. Minute teeth in one 
row on the jaws, a few in a row quite laterally on each side 
of the palate. Branchiostegal membranes narrow, totally free 
from isthmus and from each other, with 6 rays. Gillrakers 
cylindrical, long, numerous. 
I. Doiichthys novae-guineae M. Web. 
Doiichthys novae-guineae Max Weber, Nova Guinea IX. livr. 4, 1913, p- 534. 
mee. Don-7. 928 —36; Pr. 10; V. 6. 
Elongate. Height below the dorsal spine 5'/,. Head about 
* 
a 
