120. GADIDJi: DINEMATICHTHYS. 
795 
hh. Dorsal liu single; anal liu single; ventrals well developed. 
IlROSMIUS, 412. 
hhh. Dor-sal fins three; anal fins two G.vnus, 44.!. 
gg. Cliin without barbel; lower jaw projecting; scales large; dorsals two; 
anal one Hyp.sico.mktks, 444. 
dd. Frontal bone divided; top of bead with a triangular excavated area; no 
barbel. {Mei’Iiiciina;.) 
p. Lower jaw projecting; dorsals two; anal one; anal and 
second dorsal deeply einarginate MERH'ctus, 445. 
aa. Body naked; inontb very large: abdomen greatly dilatable; teeth very unequal; 
jaws with very long, depressible canines. {Chlasmodon- 
tilKP) ClUASMOUON, 44b. 
434.-BYTHITES Reinhardt. 
(Reinhardt, Dansk Vidensk. Selsk. Afbaudl. vii, 178, 1833 ; type Bgthifes fuscuslleinh.) 
Body elougate, covered with iiiiuiite scales. Head large, thick; 
mouth large; jaws equal; no barbel; bauds of teeth in the jaws 
and ou vomer and italatiues. Brauchiostegals eight; gill-membranes 
united, free from the isthmus; eye moderate. Lateral line interrupted. 
Vertical tins united ; ventral tins reduced to simple tilaments, each com- 
posed of two rays closely united. Air-bladder large; two pyloric coeca. 
A thick, conical, anal i)apilla (in the male). Greenland. an 
animal of the depths, from ,3u0iu:;, the deep.) 
1324. B. fuscoBS Reinb. 
Uniform dark-brown. Head with minute cirri; snout obtuse; maxil- 
lary extending to below eye; vertical fins enveloped in thick skin; ven- 
trals two-thirds as long as head. Depth less than length of head. 
Greenland. ( Giinther.) 
(Reinhardt, 1. c. 179; Giinther iv, 375.) 
435.— DlYEyiATICIITHYS Bleeker. 
{Brosmophgcis Gill: Halias Ajres.) 
(Bleeker, Batoe, 318; type Dincmatichthgs ilgoccefeoides Bleeker.) 
Body moderately elongate, covered with minute imbedded scales; 
lateral line inconspicuous; head moderate, conical; opercle with a 
si)iue posteriorly; preopercle unarmed, usually with a large mucous 
l)ore at its angle; no barbels; jaws subequal; teeth in the jaws cardi- 
form, in bauds anteriorly; vomer and palatines with similar teeth; 
gill-membranes little connected. Dorsal tin low, continuous, its last 
rays contiguous to the caudal, but nearly" or (piite free I'rom it; anal 
tin even, similar to dorsal, but shorter; rays of vertical tins slender, 
much branched; ventrals reduced each to a tilament formed of two rays 
