EUPHAUSIA MUCRONATA. 255 
collected by the German Plankton-Expedition in various areas of the warmer 
temperate and the tropical Atlantic, viz: —Sargasso Sea, Northern equatorial 
current, Guinea current, and Southern equatorial current. The Prince of 
Monaco secured it at various places in the Eastern Atlantic between Lat. 323° N. 
and Lat. 272° N. It is not known from the Indian Ocean, but the Copenhagen 
Museum possesses a specimen from the Southern Chinese Sea at Lat. 9° 40’ N., 
long. 109° 20’ E. According to the list of localities from the East Pacific the 
species was taken only at a small number of Stations all situated in the transverse 
area between Lat. 4° 35’ N. and Lat. 5° 10’ 8S. Ortmann enumerated three 
Stations from the Eastern Pacific, two of which are near the line and not far 
from the Galapagos, while the third is widely distant, viz. Lat. 35° 19.5’ N., 
long. 125° 21.5’ W.— The species has very rarely been taken at the surface. 
25. Euphausia mucronata G. O. Sars. 
Plate 9, figs. 3a-3g. 
1883. Euphausia mucronata G. O. Sars, Forh. Vid. Selsk. Christiania for 1883, no. 7, p. 16. 
1885. Euphausia mucronata G. O. Sars, Chailenger Rept., 13, p. 87, pl. 15, figs. 9-11. 
1911. Euphausia mucronata H. J. Hansen, Bull. Mus. Océan. Monaco, no. 210, p. 33. (With one 
text-figure). 
Sta. 4652. Noy. 11,1904. Lat. 5° 47.7’S., long. 82° 39.5’ W. 100 fms. tosurface. 1 specimen. 
A : _ § Surface. 2 specimens. 
9 Ory FI (2 A’ ~ 
Sta. 4655. Nov. 12, 1904. Lat. 5° 57.5’S., long. 80° 50’ W. | 0) (fae GRRE OD eSeTEAT: 
Sta. 4657. Nov. 13, 1904. Lat. 7° 12.5’S., long. 84° 9’ W. 300 fms. to surface. 8 specimens. 
Sta. 4667. Novy. 18,1904. Lat. 11° 59.5’S., long. 83° 40.4’ W. 300 fms. tosurface. 2 specimens. 
Sta. 4668. Nov. 19,1904. Lat. 12° 9.3’ S., long. 81° 45.2’ W. Open part of Tanner net, 300 fms. to 
surface. 3 specimens. 
Sta. 4669. Nov. 19,1904. Lat. 12° 12.7’S., long. 80° 25.6’ W. 300fms.tosurface. 8 specimens. 
Sta. 4671. Nov. 20,1904. Lat. 12°6.9’S., long. 78° 28.2’ W. 300fms.tosurface. 31 specimens. 
_ § Surface. 13 specimens. 
9 J 9° rig a =O , 2 
Sta. 4673. Novy. 21,1904. Lat. 12° 30.5’S., long. 77° 49.4’ W. Mea ee i getetacel 20 specimens! 
Sta. 4676. Dec. 5, 1904. Lat. 14° 28.9’S., long. 81° 24’ W. 300 fms. to surface. 69 specimens. 
Sta. 4677. Dec. 5, 1904. Lat. 14° 37.5’S., long. 81°41’ W. Surface. 4 specimens. 
Description— Body moderately slender.— Frontal plate (fig. 3a) very 
short, somewhat protruding but not angular at the sides, produced into a badly 
defined, short rostrum about three times as broad as long with the end acute 
or subacute. The gastric area, seen from the side (fig. 3b), highly vaulted with 
the upper margin angular or subangular; the median keel along this area is 
sharp but terminates anteriorly nearly at the base of the rostrum (fig. 3a). 
The eyes are extremely large.— The antennular peduncles are moderately 
robust; first joint, seen from the side (fig. 3c) elevated towards the end, where 
it is produced in a rather short, deeply bifid lobe (fig. 3d) with its two oblong, 
acute teeth directed somewhat upwards and more outwards than forwards, the 
