FISHERY BULLETIN: VOL. 78, NO. 1 



Figure 22.— Relationship between 

 number of lower jaw teeth and standard 

 length in two species oi Melanocetus . 



100 



90 



.c 



'a> 80 

 a> 



.2. ''° 



a> 



S 60 - 



o 



° 50 



40 



30 



20 



▼ M. pojyactis n = i5 

 A M. niger n=6 



»y ▼ 



I I I 1 L. 



I I I 1- 



10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 



Standard length in mm 



Figure 23.— Relationship between 

 escal bulb width and standard length in 

 two species oi Melanocetus . 



E 

 E 

 c: 



10 



15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 



Standard length in mm 



specimen, holotype ZMUC P9250, 28 mm, Dana 

 stn. 4000(8), eastern tropical Atlantic, 0°31' S, 

 11°02' W, 4,000 m wire, bottom depth 3,750 m, 

 0630 h, 4 March 1930, in key); Fowler 1936:1364 

 (listed). 



Xenoceratias heterorhynchus Regan and Tre- 

 wavas 1932:54, 56, fig. 82 (original description, 

 single specimen, holotype ZMUC P9248, 27 mm, 

 Dana stn. 3716(2), South China Sea, 19°18.5' N, 

 120°13' E, 3,000 m wire, bottom depth 3,225 m, 

 1400 h, 22 May 1929, in key); Grey 1956:236 

 (synonymy, distribution). 



Xenoceratias laeuis Regan and Trewavas 1932:54, 

 57, fig. 83 (original description, single specimen, 

 holotype ZMUC P9249, 23 mm, Dana stn. 

 3731( 13), South China Sea, 14°37 ' N, 1 19°52 ' E, 

 2,000 m wire, bottom depth 2,300 m, 0200 h, 17 

 June 1929, in key). 



Xenoceratias brevirostris Regan and Trewavas 

 1932:54, 57, fig. 84 (original description, single 

 specimen, holotype ZMUC P9247, 19 mm, Dana 

 stn. 3739(8), Celebes Sea, 3°20' N, 123°50' E, 

 3,000 m wire, bottom depth 4,475 m, 0700 h, 2 

 July 1929, in key). 



Xenoceratias braueri Koefoed 1944:6, fig. 2 (origi- 

 nal description, single specimen, holotype 

 UBZM 4309, 18.5 mm, Michael Sars North At- 

 lantic Deep-Sea Expedition stn. 53, central 

 North Atlantic, 34°59' N, 33°01' W, 2,600 m 

 wire, bottom depth 2,615-2,865 m, 8-9 June 

 1910). 



Melanocetus johnsoni, Bertelsen 1951:44, 48-53, 

 fig. 17C, D, F-H, table 6 (synonymy, distribu- 

 tion, comparison with all known material, in 

 key); Grey 1956:236 (synonymy, distribution); 

 Maul 1962b:36-37, fig. 2 (description of addi- 



74 



