124 
tween ventrals and anal, 21 between origin of ventrals and 
caudal, the third of which is situated higher up outside the 
series 13 in a lateral series between operculum and vertical 
through anal, the anterior outside the series far above the 
pectorals. Ventrally on each side above the anterior caudal 
rays 2 glandular patches behind each other. Dorsally above 
them a similar organ. Black with a broad silvery, lateral 
band. Fins translucent. Length about 190 mm. 
Habitat: West of Sumatra (614 and 677 M.); Flores Sea 
(1600 M.)!; Banda Sea (2477 M.! and 658 M. Challenger); Ara- 
fura Sea (1463 M.). — Indic: Arabian Sea. Atlantic: East 
Coast of North and Central America, Gulf of Guinea. 
g. Cyclothone Goode & Bean. 
(Goode & Bean, Bull. Mus. Comp. Zool. X. 1883, p. 221). 
Elongate, somewhat compressed. Scales none or large, but 
very thin and deciduous, often only distinguishable by a faint 
marking of the skin. A complete ventral and an incomplete 
lateral series of small luminous organs, besides two opercular 
ones; a series between the branchiostegal rays and a suborbital 
one. Head compressed, conical. Eye very small, much smaller 
than snout. Gape of mouth very wide, bordered superiorly 
by the small intermaxillary and the very long, slender, sickle- 
shaped maxillary, which is more or less dilated posteriorly. 
Infraorbital bone not dilated. Lower jaw projecting, with a 
prominent inferior posterior angle, enclosed between the maxil- 
laries. Dorsal shorter than anal, the origin of both opposite 
and both situated in the posterior half of the body. Pectorals 
in the lower half of the height. Ventrals slightly before middle 
of length. Caudal forked. No adipose fin. Intermaxillary, 
maxillary and mandible with numerous, needle-like teeth 
in a series, increasing in size backward, some of which 
are somewhat enlarged. The posterior maxillary more or less 
obliquely directed forward. Sometimes a few short fangs ante- 
riorly in the mandible. Teeth on palatines, pterygoids; on 
vomer present or absent. Gillopening very wide, gillmem- 
branes free from isthmus. Pseudobranchiae none. Gillrakers 
numerous, long, bristle-like. Branchiostegals short, 12—14. 
Small bathypelagic fishes. 
