MALACOSTEIDAE 317 



Family MALACOSTEIDAE 



This family has also been recently monographed by Regan and Trewavas (1930, 

 Ocean Rep. Danish ' Dana'-Exped. (1920-22), vr, pp. 133-143, pis. xiii, xiv, 

 text-figs.). 



Photostomias guernei, Collett, 1889. 



Regan and Trewavas, t.c. p. 134, figs. 



St. 288. 21. viii. 27. 00° 56' 00" S, 14° 08' 30" W. Young-fish trawl, 25o(-o)m. : i specimen, 

 32 mm. 



28. X. 25. 13° 25' N, 18° 22' W. ^h m. net, horizontal, 900 (-0) m. : i specimen, 140 mm. 



II. xi. 25. 6° 55' N, 15° 54' W. 2 m. tow-net, horizontal, 800 (-0) m. : i specimen, 92 mm. 



Hab. Atlantic; Caribbean Sea. 



In the male specimen the eye measures 3I in the length of the head, and the post- 

 ocular organ is very large, 2| in length of lower jaw. In these characters it approaches 

 P. atrox, Alcock, but the shape of the luminous organ appears to be different. In the 

 female the eye is about equal to the postocular luminous organ, and 5 in length 

 of head. 



Aristostomias xenostoma, Regan and Trewavas. 



Regan and Trewavas, 1930, t.c. p. 139, pi. xiii, fig. 3, text-figs. 133-134. 

 St. 286. 17. viii. 27. 3° 06' 30" S, 3° 53' 00" W. Young-fish trawl, 102-0 m. : i specimen, 55 mm. 

 Hab. Atlantic; Caribbean Sea. 



Malacosteus niger, Ayres, 1857. 



Regan and Trewavas, t.c. p. 142, fig. 138. 



St. 85. 23. vi. 26. 33° 07' 40" S, 4° 30' 20" E. 4! m. net, horizontal, 2000 (-0) m. : i specimen, 

 150 mm. 



St. 86. 24. vi. 26. 33° 25' 00" S, 6° 31' 00" E. 4I m. net, horizontal, 1000 (-0) m. : i specimen, 

 120 mm. 



St. 100. 2. X. 26. 33° 20' 00" to 33° 46' 00" S, 15° 18' 00" to 15° 08' 00" E. Young-fish trawl, 

 625-675 m. : 2 specimens, 75-95 mm. 



St. loi. 15. X. 26. 33° 50' to 34° 13' S, 16° 04' to 15° 49' E. 4J m. net. horizontal, 850-950 m. : 

 I specimen, 140 mm. 



St. 298. 29. viii. 27. 13° 01' 45" N, 21° 34' 45" W. Young-fish trawl, 900-1200 (-0) m. : i 

 specimen, 30 mm. 



28. X. 25. 13° 25' N, 18° 22' W. 4i m. net, horizontal, 900 (-0) m. : 10 specimens, 80-155 mm. 



II. xi. 25. 6° 55' N, 15° 54' W. 2 m. tow-net, horizontal, 800 (-0) m. : i specimen, 75 mm. 



Hab. Atlantic ; Indian Ocean. 



