66 
EINAR LÖNNBERG, 
(Sch wed. Südpolar-Exp. 
a little more than half way to vent. Distance from snout to origin of dorsal equal 
to distance from snout to vendrais. No adipose fin below in front of vent. Dorsal 
adipose fin beginning opposite tenth anal ray. Barbel a little longer than head, 
with an unpigmented, somewhat clubshaped, luminous organ at the extreme end. 
35 pairs of luminous spots from the anterior part of the isthmus to the ventrals, 
16 pairs from the ventrals to the vent and 3 more on either side of the anal, but 
whether the series is continued still further, cannot be discerned on the present spe- 
cimen. The latero-ventral row contains probably according to an approximate esti- 
mation about 56 luminous spots, but only the 42 anterior ones of those are con- 
spicuous on the present specimen, extending from the opercle to opposite the seventh 
anal ray. There has also been luminous spots on the head (on the opercle and 
above the upper jaw), but nothing can be said about them. Skin black with small 
white spots. 
Dimensions: 
Total length without caudal 188 mm. 
Length of head 37 » 
Greatest depth of body 33 » 
Depth of body at beginning of dorsal 29 » 
Least depth of caudal peduncle 10 » 
Distance from snout to dorsal fin 100 s 
ï s » » ventrals 100 * 
» > beginning of dorsal to root of caudal 87 » 
» s » anal » » » » 42 » 
Base of dorsal 18 » 
Postorbital length of head 23 » 
Diameter of eye 6,5 » 
Length of snout 10 » 
Length of barbel 42 » 
With regard to the number of fin-rays this new species resembles A. richard- 
sonii POEY from the Cuban waters but differs from the same through some relative 
dimensions. A. antarcticus is not so slender, so that, for instance, its height at the 
dorsal is more than the postorbital length ol the head. It has a longer snout which 
is as may be seen from the measurements above a good deal longer than the dia- 
meter of the eye, while it is only two thirds the length of the eye in A. richard- 
sonii. The distance from the anal origin to the root of caudal equals in the latter 
the length of the head, but in the new species the former measurement is longer. 
A. niger Richardson, A. gemmifer Goode & Bean, A. barbatus Kner and A. 
indiens Brauer have a much larger number of dorsal rays (16 — 17) and differ also 
in other respects. A. boidengeri GILCHRIST * has 16 dorsal rays and ventral adipose 
* Marine Investigations in South Africa Vol. II. Cape Town 1904. 
