1912. ] R. B.S. SEWELL: Notes on deep-sea fish. 9 
Callionymus kaianus, Giinther. 
1887. Giinther, p. 44, pl. xix, fig. B 
1899. Alcock, p. 74. 
1907. Tate Regan, p. 248. 
Two examples of this rare species. measuring respectively 93 
and 96 mm. in length, were obtained at Station 389. 
‘Tate Regan { i. c.) erroneously states that, previous to the 
Percy Sladen. expedition, this species was known only from the 
type specimen ; two examples, however, were obtained by the 
‘ Investigator ’’ in Indian waters prior to the date of this expedi- 
tion at Station 258, 23-iv-gqg—8° 23’ 00” N., 76° 28’ 00” E.—in 102 
fathoms, and are recorded by Alcock (/.c.). 
In the present specimens, as in the single example described 
by Tate Regan, the Ist dorsal fin ray is not prolonged as described 
by Gtnther in the type specimen: in all other respects, however, 
they agree both with the description and the two specimens al- 
teady in the Indian Museum. 
ANACANTHINI. 
Macrurus nasutus, Giinther. 
M. nasutus, 1877, Giinther, p. 440. 
re 1887, Giinther, p. 132, pl. xxx, fig. B 
M. brevtrostris, 1889, Alcock, p. 393. 
Ill. Zool. Invest, Fishes, pl. xiii, fig. 3. 
M. nasutus, 1899, Alcock, p. IIt. 
M. brevirostris, 1908, Brauer, p. 263. 
Two examples obtained at Station 391 are referred to this 
species. Though rarein Indian waters examples have been pre 
viously Sueaned and were described by Alcock under the name M. 
brevirostris. He subsequently, however, arrived at the conclusion 
that M. brevirostris was really only a synonym for M. nasutus, 
Gunther. 
Brauer has again tried to separate the two species and has 
pointed out several discrepancies between the two accounts. I 
have carefully compared all the specimens in the Indian Museum, 
which include one of the ‘ “Challenger’’ duplicates from Japan, 
-and can find no difference between them. 
As regards the points which Brauer mentions, I would point 
out that :— 
1. The anus in the Challenger specimen is midway between 
the base of the ventral and the anal fins. In the Indian 
examples it may be either midway between or slightly 
nearer the ventrals. 
2. The outer row of teeth in all the specimens is enlarged 
—as described by Alcock. 
3. The number of scales between the Ist dorsal fin and lateral 
line is the same in all the specimens; between the Ist 
