I2 4 



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 scries 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.). Indie: Arabian Sea. Atlantic: East 

 Coast of North and Central America, Gulf of Guinea. 



9. 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. 



