FISHERY BULLETIN: VOL. 73, NO. 1 



0.1 mm 

 I 1 



Figure 12.— Telson: A, furcilia I; B, furcilia II; C, furcilia III; D, furcilia IV; E, furcilia V; F, furcilia VI. 



that the average ratio tends to increase in 

 northern and western Pacific samples. 



Juveniles 



There was a good series of related juvenile 

 euphausiids in the net haul from station 6304- 

 117.90. Sixty-four were measured and examined 

 in some detail. The smaller juveniles had the 



distinctive 3-lobed eye described for furcilia stages 

 ofE. gihboides while some of the larger individ- 

 uals had the characteristic eye as well as a small 

 dorsal spine on the posterior margin of the 3rd 

 segment of the abdomen and a small dorsal lappet 

 with triangular pointed tip on the margin of the 

 1st segment of the antennule. The abdominal 

 spine and shape of rudimentary lappet together 

 with the relatively large eye identify the juve- 

 niles as E. gibboides (Boden et al. 1955). The 

 shape of the eye provides continuity with the 



164 



