399 
ostegals, 9 on isthmus, then 15 to ventrals, 19 between ventral and anal, 13 
along anal base* 
D. 23, fin height 2 l/8 to 2 l/2 in total head; A. 24 to 26, fin height 
2 l/5; caudal 2 l/5, forked, slender lobes minted; ventral 2 2/5 in combined 
head and body to caudal base; least depth of caudal peduncle 1 to 1 l/3 in eye. 
largely blackish or dark brown. Head paler. Iris neutral gray. Fins whitish. 
83837 U.S.N.M. Albatross Station 2393. Length 59 mm. 
91401*’TJ.S.F.M. In 1650 meters. Albatross Station 20024. November 
22, 1919. Length 68 mm. 
Genus ARISTOMIAS Zugmayer * A 
Aristcstomias ZUGMAYER, Bull. Inst. Oceanogr. Monaco, No.253, 1913, p.l. Type 
Aristostomias grdma 1 di_ZUGMAYER. 
Zastomias GILBERT, Proc. U.S.Nat. Mus., vol.48, 1915, p.322. Type Zastomias 
scintillans GILBERT, orthotypic. 
Mouth cleft straight. Fangs fixed, curved, strongly barbed. Premaxill8-ries 
with 6 or 7 fangs each side, not enlarged. Lower jaw with 2 pairs of long anter¬ 
ior fangs, fitting into grooves on snout, followed each side by 5 to 9 smaller 
fangs. Vomer toothless. Long series (to 12) of teeth on each side of palatine; 
1 to 3 pairs of teeth on first basibranchial, 2 to 4 pairs on second, none on 
gill arches. Crecentic subocular luminous organ close to lower 'rent border of 
orbit; above its hind end small double organ and behind postocular luminous 
organ. Barbel slendeh, usually ending in small swelling. Serial photophores 
show tendency to form small linear or clustered groups; 3 pairs before sectoral 
always lying between r’ght and left members of 2 preceding pairs. Dorsal and 
anal begin at same vertical, bases fleshy, rays partly covered by thick black 
