EUPHAUSIA BREVIS. 239 



16. Euphausia brevis 11. J. H.\n.skn. 

 Plate 8, figs, lii-lfj. 



1905. Euphausia brevis H. J. Hansen, IJull. Mus. Oc(5an. Monaco, no, 42, p. 15. 



Sta. 4685. Dec. 10, 1004. Lat. 21° 36.2' S., long. 94° 56' W. 300 fms. to surface. 13 specimens. 

 Sta. 4686. Dec. 10, 1904. Lat. 22° 2' S., long. 95° 52' W. Surface. 31 specimens. 



Sta. 4687. Dec. 11, 1904. Lat. 22° 49.5' S., long. 97° 30.6' W. \ 1'^JT}° """"^'T ^t 'P"''™™'- 



( 2125 fms. to surface. 7 specimens. 



Sta. 4688. Dec. 11, 1904. Lat. 23° 17.2' S., long. 98° 37.5' \V. Surface. 7 .specimens. 



Sta. 4689. Dec. 12, 1904. Lat. 24° 5' S., long. 100° 20' W. 300 fms. to surface. 21 specimens. 



Sta. 4690. Dec. 12, 1904. Lat. 24° 45' S., long. 101° 45' W. Surface. 11 spe('imens. 



Sta. 4691. Dec. 13, 1904. Lat. 25° 27.3' S., long. 103° 29.3' \V. 300 fms. to surface. 17 specimens. 



Sta. 4692. Dec. 13, 1904. Lat. 25° 40.4' S., long. 104° 1.3' VV. Surface. 1 specimen. 



Sta. 4694. Dec. 22, 1904. Lat. 26° 34' S., long. 108° 57.3' W. Surface. 11 specimens. 



Sta. 4695. Dec. 23, 1904. Lat. 25° 22.4' S., long. 107° 45' W. 300 fms. to surface. 4 specimens. 



Sta. 4696. Dec. 23, 1904. Lat. 24° 40.3' S., long. 107° 5.3' W. Surface. 1 .specimen. 



Sta. 4698. Dec. 24, 1904. Lat. 22° 50.4' S., long. 105° 31.7' W. Surface. 10 specimens. 



Sta. 4699. Dec. 25, 1904. Lat. 21° 39.5' S., long. 104° 29.8' W. 300 fms. to surface. 2 specimens. 



Sta. 4700. Dec. 25, 1904. Lat. 20° 28.8' S., long. 103° 26.3' W. Surface. 9 specimens. 



Sta. 4701. Dec. 26, 1904. Lat. 19° 11.5' S., long. 102° 24' W. 300 fms. to surface. 1 specimen. 



Sta. 4702. Dec. 26, 1904. Lat. 18° 39.5' S., long. 102° W. Sui'face. 11 specimens. 



Sta. 4730. Jan. 20, 1905. Lat. 15° 7' S., long. 117° 1.2' W. 300 fms. to surface. 3 specimens. 



Sta. 4734. Jan. 22, 1905. Lat. 17° 36' S., long. 122° 35.6' W. 300 fms. to surface. 1 specimen. 



Sta. 4735. Jan. 22, 1905. Lat. 18° 16' S., long. 123° 34.4' W. Surface. 33 specimens. 



Sta. 4736. Jan. 23, 1905. Lat. 19° 04' S., long. 125° 5.4' W. 300 fms. to surface. 10 specimens. 



Sta. 4738. Jan. 24, 1905. Lat. 20° 26.5' S., long. 128° 30.2' W. Surface. 21 specimens. 



Description. — The frontal plate is broad and moderately long (fig. la), 

 proportionately broader and conspicuously longer than in the four preceding 

 species, with the lateral margins nearly straight or feebly sinuate, terminating 

 in a small or very small, very oblong-triangular rostrum somewhat or much 

 shorter than the breadth of second antennular joint. The median area behind 

 the frontal plate is much vaulted; the keel from the basal part of the rostrum 

 to the hind margin of the area named is well developed. 



Eyes very distinctly smaller than in E. eximia, brown or blackish brown, 

 thus lighter than in the four preceding species. — The antennular peduncles 

 comparatively thick, similar in* both sexes. The first joint distinctly less than 

 twice as long as broad ; its terminal lobe is directed vertically upwards or upwards 

 and somewhat forwards, it is about half as broad as the end of the joint, broader 

 than high, with the terminal margin more or less deeply and obliquely concave, 

 the distal inner part being triangular, somewhat produced and its angle terminat- 

 ing in an acute point or short, spiniform process, while its outer distal angle is 

 produced into a somewhat longer, subspiniform process (fig. Ic) ; frequently 

 the concave distal margin shows a tiny, angular projection usually terminating 

 in a short seta. Second peduncular joint with a proportionately rather long, 

 spiniform process originating above from the distal margin somewhat inside 



