244 THE SCHIZOPODA. 



Distribution. — The long list of Stations shows that this species is extremely- 

 common in the major part of the area investigated, viz. in its most tropical belt, 

 being entirely wanting in the portions South of Lat. 20° S. and North of Lat. 

 20° 42' N. According to Sars it has once been taken rather southwards, viz. 

 off Port Jackson, about at Lat. 33h° S. It is common in the Indian Ai'chipelago 

 ("Challenger," "Siboga") and the Copenhagen Museum possesses a specimen 

 from the Southern Chinese Sea at Lat. 19° 14' N., long. 116° 16' E. Finally 

 it is common in the tropical Atlantic, going northwards at least to Lat. 24° N. 

 (Ortmann, and specimens in the Copenhagen Museum from almost twenty 

 locahties). 



The species has frequently been taken at the surface. But it may be men- 

 tioned that according to Ortmann the German Plankton-Expedition has captured 

 the species twice in the closing net from 1200 to 1000 m. and from 700 to 500 m., 

 thus proving that at least sometimes it goes down to a very considerable depth. 



Group c. Species with a single pair of lateral denticles on the carapace. A pro- 

 truding, acute dorsal process on third abdominal segment but without any 

 dorsal process — at most with a minute denticle {E. mucronata) — on fourth 

 and fifth abdominal segments. 



19. Euphausia gibba G. O. Sars. 



Plate 8, figs. 2a-2b. 



1883. Euphausia gibba G. O. Sars, Forh. Vid. Selsk. Cliristiania for 1883, no. 7, p. 17. 



1885. Euphausia gibba G. O. Sars, Challenger Rept., 13, p. 91, pi. 16, figs. 1-8. 



1911. Euphausia gibba H. J. Hansen, Bull. Mus. Oc(San. Monaco, no. 210, p. 31. (With figure). 



Lat. 20° 2.4' S., long. 91° 52..5' W. 300 fms. to surface. 7 specimens. 

 Lat. 21° 36.2' S., long. 94° 56' W. 300 fms. to surface. 2 specimens. 

 Lat. 22° 2.2' S., long. 95° 52' W. Surface. 1 specimen. 



Lat. 22° 49.5' S., long. 97° 30.6' W. ■! ^^^ f">«- to surface. 6 specimens. 



( 2125 fms. to surface. 1 specimen. 

 Lat. 25° 22.4' S., long. 107° 45' W. 300 fms. to surface. 1 specimen. 

 Lat. 24° 40.3' S., long. 107° 5.3' W. Surface. 5 specimens. 

 Lat. 22° 50.4' S., long. 105° 31.7' W. Surface. 14 specimens. 

 Lat. 20° 28.8' S., long. 103° 26.3' \Y. Surface. 1 specimen. 

 Lat. 19° 11.5' S., long. 102° 24' W. 300 fms. to surface. 12 specimens. 

 Lat. 18° 39.5' S., long. 102° W. Surface. 7 specimens. 

 Lat. 16° 55.3' S., long. 100° 24.6' W. 300 fms. to surface. 2 specimens. 

 Lat. 16° 32.5' S., long. 1 19° 59' W. 300 fms. to surface. 1 specimen. 

 Lat. 18° 16' S., long. 123° 34.4' W. Surface. 2 specimens. 



Description. — Body slender. — Frontal plate very short, rostrum oblong- 

 triangular, somewhat acuminate and very acute, about as long as, or a little 

 longer than, the breadth of the second antennular joint and not quite or about 



