English: Borostomias antarcticus

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ASTRONESTHIDAE 307 Described from a single specimen, 180 mm. in length. Hob. South Atlantic. In the form of the teeth on the maxillary this species is a typical Borostomias, but in the anterior prolongation of the postocular luminous organ and in the structure of the barbel it is very similar to some of the species placed in the genus Diplolychmis by Regan and Trewavas. The single specimen is unfortunately poorly preserved, and it is impossible to be certain as to the form of the postocular luminous organ.

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Fig. 15. Borostomias antarcticus. (x |.) [Barbel x il.] Neonesthes microcephalus, n.sp. St. 269. 26. vii. 27. 15° 55'00" S, 10° 35'00" E. 4J m. net, horizontal, 600-700 (-0) m.: 2 specimens, 145-148 mm. Depth of body nearly 7 in the length, length of head 6|. Snout short; diameter of eye 4 in length of head. Postocular luminous body 3 to 4 in length of head, with a narrow subocular prolongation more or less covered by a pigment layer. Barbel i^-q to