EUPIIATTSIA MUCRONATA. 255 



collected by the German Plankton-Expedition in \;irious areas of Ilu> \v;irni(>r 

 temperate and the tropical Atlantic, viz: — Sargasso Sea, Northern eciiiatoi'ial 

 current, Guinea current, and Southern equatorial current. The Prince of 

 Monaco secured it at various places in the Eastern Atlantic between Lat. 32^° N. 

 and Lat. 27|° 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' S. 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 rmicronala G. O. Sars, Forh. Vid. Selsk. Christiania for 1883, no. 7, p. 16. 

 1885. Euphausia mucronata G. O. Sars, Challenger Rept., 13, p. 87, pi. 15, figs. 9-11. 

 1911. Euphausia mucronata H. J. Hansen, Bull. Mus. Ocean. Monaco, no. 210, p. 33. (With one 

 text-figure). 



Sta. 4652. Nov. 11, 1904. Lat. 5° 47.7' S., long. 82° 39.5' W. 100 fms. to surface. 1 specimen. 



Sta. 4655. Nov. 12, 1904. Lat. 5° 57.5' S., long. 80° 50' W. \ ^^^f^' ,^ **Pe'^'°iens^ 



( 400 fms. to surface. 22 specnnens. 



Sta. 4657. Nov. 13, 1904. Lat. 7° 12.5' S., long. 84° 9' W. 300 fms. to surface. 8 specimens. 



Sta. 4667. Nov. 18, 1904. Lat. 11° 59.5' S., long, 83° 40.4' W. 300 fms. to surface. 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. 300 fms. to surface. 8 specimens. 



Sta. 4671. Nov. 20, 1904. Lat. 12° 6.9' S., long. 78° 28.2' W. 300 fms. to surface. 31 specimens. 



Sta. 4673. Nov. 21, 1904. Lat. 12° 30.5' S., long. 77° 49.4' W. -| |"j^^f ''■ , ^^ specimens. 



( 300 ims. to surface. 30 specimens. 



Sta. 4676. Deo. 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, wlicre 

 it is produced in a rather short, deeply l)ifid lobe (fig. 3d) with its two oblong, 

 acute teeth directed somewhat upwards and more outwards than forwards, the 



