333 



<* 



5. Fam. DOIICHTHYIDAE. 



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. DoiichthysM. Weber. 



(MAX WEBER, 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 novac-guineae Max Weber, Nova Guinea IX. livr. 4, 1913, p. 534- 



B. 6; D. i. 7; A. 2830; P. I. IO; V. 6. 



Elongate. Height below the dorsal spine 5\/ 4 . Head about 



