129. GADIB^E DINEMATICHTHYS. 795 



Till. Dorsal fin single; aual fin single; ventrals well developed. 



BROSMIUS, 442. 



Tihli. Dorsal fins three ; anal fins two GADUS, 44:5. 



gg. Chin without barbel; lower jaw projecting; scales large; dorsals two; 



anal one : HYPSICOMETES, 444. 



dd. Frontal bone divided; top of head with a triangular excavated area; no 



barbel. (Alerluciince.) 

 p. Lower jaw projecting; dorsals two; anal one; anal and 



second dorsal deeply emargiuate MERUJCIUS, 445. 



aa. Body naked; month very large : abdomen greatly dilatable ; teeth very unequal; 



jaws with very long, depressible canines. (Chiasinodon- 

 tinat) CHIASMODON, 44(J. 



434. BYTHSTES Eeinhardt, 

 (Reinhardt, Dausk Vidensk. Selsk. Afhandl. vii, 178, 1833 ; type Bythites fuscusHeMi.) 



Body elongate, covered with minute scales. Head large, thick; 

 mouth large; jaws equal; no barbel; bands of teeth in the jaws 

 and on voiner and palatines. Brauchiostegals eight; gill-membranes 

 united, free from the isthmus; eye moderate. Lateral line interrupted. 

 Vertical tins united ; ventral fins reduced to simple filaments, each com- 

 posed of two rays closely united. Air-bladder large; two pyloric cosca. 

 A thick, conical, anal papilla (in the male). Greenland. (fiuOhr^, tin. 

 animal of the depths, from ftuOt<><;, the deep.) 



1224. B. fwscaas Reiuh. 



Uniform dark-brown. Head with minute cirri; snout obtuse; maxil- 

 lary extending to below eye; vertical fins enveloped in thick skin; veu- 

 trals two-thirds as long as head. Depth less than length of head. 

 Greenland. ( Giinther.) 



(Reiuhardt, 1. c. 179; Giiuther IT, 375.) 



435. DINEMATICHTHYS Bleeker. 



(Brosmophyda Gill: Halias Ayres.) 

 (Bleeker, Batoe, 318; type Dinematichtliys ilyocoeteoides Bleeker.) 



Body moderately elongate, covered with minute imbedded scales; 

 lateral line inconspicuous; head moderate, conical; opercle with a 

 spine posteriorly; preopercle unarmed, usually with a large mucous 

 pore at its angle; no barbels; jaws subequal ; teeth in the jaws cardi- 

 form, in bands anteriorly; vomer and palatines with similar teeth; 

 gill-membranes little connected. Dorsal fin low, continuous, its last 

 rays contiguous to the caudal, but nearly or quite free from it; anal 

 fin even, similar to dorsal, but shorter; rays of vertical fins slender, 

 much branched; ventrals reduced each to a filament formed of two rays 



