COPEPODA FROM IFALUK ATOLL 



305 



a 



Figure 120. — Lourinia armata (Claus), loc. 592, ad. 9: a, whole animal, lateral view from 

 left side; b, same animal, distal part of abdomen and furca, dorsal view; ad. cf : c, anal 

 somite and furca, dorsal view, {a, X 165; b, c, X 275.) 



middle of cephalic somite, very gradually narrowing posteriorly, 

 anterior portion of cephalothorax broadly rounded (fig. 121c). Head 

 and 1st thoracic somite fused to form cephalic somite, which is as 

 long as combined lengths of thoracic somites 2 to 4. Back in lateral 

 aspect gently rounded and curving into big rostrum, sides slightly 

 produced to shield oral appendages (fig. 120a). Rostrum curved, 



