STAGES IN THE LIFE HISTORY OF CALANUS FINMARCHICUS. ils; 
Endopodite unsegmented, with 4 long bristles. 
Exopodite unsegmented, with 4 thorns on the outer margin, a terminal 
blade, and 3 bristles inside. 
Appendage VIII. 2np Swimmine Foor. Like the first, but with one 
more bristle on the inside of the endopodite. The exopodite has 4 thorns 
outside and a terminal bristle, with 3 bristles inside. 
Appendage IX. 3rpD Swimmine Foot with 2 lobes, each lobe with 2 
hooks at the end. 
Stace II (Plate 4, Figs. 2 and 6). 
Length of body 1:20 mm., 4 free thoracic segments, urosome of 2 
segments. Caudal furea like the adult, with 5 bristles and a small lateral 
inner bristle. Colouring the same as I, but slightly lighter. 3 pairs of 
swimming feet and the rudiments of a 4th pair. 
Appendage I. ANTENNULE with 12 segments, the last 7 the same as I. 
Appendage II. AnreNnNaA the same as I. 
Appendage III. Manprse the same as I. 
Appendage IV. MaxiILuute the same as I, but with 7 bristles on the 
epipodite. 
Appendage V. Maxriia the same as I. 
Appendage VI. Maxiturrep (Plate 5, Fig. 1). 
Endopodite with a 3rd segment, Ist segment with one broad and 2 
small bristles, other segments as in I. 
Appendage VII. 1st Swimmine Foor (Plate 5, Fig. 2). 
Endopodite with 2 segments, no bristle on Ist segment, 2 with 2 long 
bristles on the outside, one terminal bristle, and 4 bristles inside. 
Ezxopodite with 2 segments, a thorn on the outside of the first, 2 thorns 
on the outside of the 2nd, a terminal blade, and 4 long bristles inside. 
Appendage VIII. 2np Swimine Foor (Plate 5, Fig. 3). 
Endopodite with 2 segments, Ist with one bristle, 2nd with 4 bristles 
inside, a terminal bristle, and 2 bristles outside. 
Kxopodite with 2 segments, 1st with a thorn, 2nd with 3 thorns outside, 
a terminal blade, and 4 bristles inside. 
Appendage [X. 3RD SwimMinG Foor (Plate 5, Fig. 4). 
Endopodite unsegmented, one proximal and 3 distal bristles inside, a 
terminal bristle, and one bristle outside. 
Ezopodite unsegmented, 3 thorns outside, a terminal blade, and 3 
bristles inside. 
Appendage X. 4TH SwimmineG Foor with 2 lobes each with 2 hooks. 
