GONOSTOMATIDAE 285 



Gonostoma bathyphilum (Vaillant). 



Neostoma bathyphilum, Vaillant, 1884, La Nature, xxii, p. 184, fig.; 1888, Exped. Sci. ' Tra- 



vailleur ' et ' Talisman \ Poissons, p. 96, pi. viii, fig. i . 



Cyclothone bathyphila, Goode and Bean, 1895, Ocean. Ichth. p. 100, fig. 118. 



? Gonostoma brevidens, Goode and Bean, t.c. p. 98, fig. 117. 



Cyclothone grandis, Collett, 1896, Bull. Soc. zool. France, xxi, p. 99. 



Gonostoma bathyphilum, Brauer, 1906, ' Valdivia' Tiefsee-Fische, p. 73; Zugmayer, 1911, 



Res. Camp. Sci. Monaco, xxxv, p. 49, pi. ii, fig. i ; Holt and Byrne, 1913, Fisheries, 



Ireland, Sci. Invest. 1912, i, p. 11, figs. 3-4; Roule, 1919, Res. Camp. Sci. Monaco, Lii, p. 27. 



Gonostoma grandis, Barnard, 1925, Ann. S. Afric. Mus. xxi, p. 143. 



St. 81. 18. vi. 26. 32° 45' 00" S, 8° 47' 00" W. \h m. net, horizontal, 650 (-0) m. : 2 specimens, 

 29-35 mm. 



St. 86. 24. vi. 26. 33° 25' 00" S, 6° 31' 00" E. 4J m. net, horizontal, 1000 (-0) m. : 3 specimens, 

 30-70 mm. 



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



1 specimen, 60 mm. 4! m. net, horizontal, 1310-1410 m. : 3 specimens, 80-130 mm. 



Depth of body 6| to 6f in the length, length of head 4 to 4^. Snout longer than eye, 

 diameter of which is 7I to 9 in length of head and nearly twice in the interorbital width. 

 Suborbital moderately enlarged, not covering entire cheek. A pair of conical teeth on 

 the vomer. Scales absent. About 15 gill-rakers on lower part of anterior arch. Dorsal 

 12-14; origin about equidistant from occipital region and base of caudal. Adipose fin 

 well developed. Anal 22-24; origin very little in advance of that of dorsal. Pectoral with 

 7-10 rays. Pelvic 7 or 8; origin much nearer to tip of lower jaw than base of caudal. 

 Photophores small and indistinct; a series between the branchiostegal rays; a narrow 

 luminous streak below the eye, and another on the praeoperculum ; one supracaudal and 

 two infracaudal luminous patches ; lower series of photophores on body consisting of 



2 or 3 in front of the pectoral fin, 8 or 9 from pectoral to pelvic, 3 from pelvic to origin 

 of anal, and 19-20 from anal to base of caudal ; the upper series, consisting of 14 photo- 

 phores irregularly arranged on the side of the body, ends opposite to the origin of the 

 dorsal fin. Uniformly blackish. 



Described from 13 specimens, 29 to 130 mm. in length. 



Hab. North and South Atlantic. 



Gonostoma brevidens (Kner and Steindachner), Goode and Bean, from the Western 

 Atlantic, may be this species, but there are several discrepancies between their descrip- 

 tion and figure. The number of anal rays, for example, is given as 17-19, but about 26 

 are shown in the figure. I am indebted to the Director of the Museum of Comparative 

 Zoology, Cambridge, Mass., for some young examples collected by the 'Blake' 

 and identified as this species, but these prove to be Cyclothone microdon. 



Gonostoma gracile, Giinther. 



Gonostoma gracile, Giinther, 1878, Ann. Mag. Nat. Hist. (5), n, p. 187; 1887, Deep-Sea Fish. 

 'Challenger', p. 174, pi. xlv, fig. C. 



