252 THE SCHIZOPODA. 



and the process beyond the foot is rather long, regularly tapering in breadth 

 from the robust base to the acute end; also a httle curved and towards the 

 acute end curved considerably inwards. The proximal process has the proximal 

 three fifths robust and somewhat curved, with the inner margin concave and the 

 outer more convex, as the part at the middle is thicker than at each end; the 

 distal two fifths are flattened, towards the end quite flat, with the proximal half 

 of its antero-interior margin somewhat convex, as this part, seen from behind 

 (fig. la), is considerably expanded; then it tapers in breadth towards the rounded 

 end and the most distal part is so flattened that, seen from the inner side (fig. 4e), 

 it looks quite thin with the end nearly acute. The median lobe has its terminal 

 part produced as a narrow but moderately short lobe which is rounded at the 

 end and directed obliquely forwards, it is therefore seen better from the inner 

 side (fig. 4e); the lateral process is of moderate size, curved inwards more or 

 less beyond the middle and with a sharp dorsal tooth slightly beyond the curva- 

 ture. The auxiliary lobe is long. The setiferous lobe is broad, with six setae 

 from the triangularly produced terminal part, but with no setae along the outer 

 margin. 



Length of adult males 7.5-10 mm., of a large female 10.8 mm. 



Type. — A male from Sta. 4652; 100 fms. to surface. 



Remarks. — This small species is easily distinguished from all other forms 

 by the large, movable lamella projecting from the second antennular joint and 

 covering a large portion of the upper and outer portion of third joint. The 

 shape of the short frontal plate, of the lobe from the first antennular joint, etc., 

 afford other valuable characters. 



Distribution. — The list of localities shows that E. lamelligera is common 



in the eastern part of the area explored in 1904-1905, but only between Lat. 20° 



N. and Lat. 10^° S., furthermore it was frequently taken at the surface and at 



times in considerable numbers. The species is unknown to me from any other 



area or ocean. 



24. Euphausia gibboides Ortmann. 



Plate 9, figs. 2a-2h. 



1893. Euphausia gibboides Ortmann, Ergebn. der Plankton-Exped., 2, G., b., p. 12, taf. 1, fig. 5. 

 1911. Euphausia gibboides H. J. Hansen, Bull. Mus. Ocean. Monaco, no. 210, p. 33. 



Lat. 4° 35.4' N., long. 83° 32.3' W. 300 fms. to surface. 2 specimens. 

 Lat. 1° 31' N., long. 86° 32' W. 300 fms. to surface. 20 specimens. 

 Lat. 0° 27' N., long. 87° 13' W. 300 fms. to surface. 2 specimens. 

 Lat. 2° 40.4' S., long. 90° 19.3' W. 300 fms. to surface. 1 specimen. 

 Lat. 2° 18.5' S., long. 90° 2.6' W. 600 fms. to surface. 2 specimens. 

 Lat. 5° 10' S., long. 98° 56' W. 300 fms. to surface. 1 specimen. 

 Lat. 0° 3.4' N., long. 117° 15.8' W. 300 fms. to surface. 5 specimens. 



