COPEPODA FROM IFALUK ATOLL 



49 



Figure 11. — Macrocheiron cheliferum (Thompson and A. Scott), loc. 756, ad. ?: a, whole 

 animal, lateral view from right side. Ifanella chacei, new species, loc. 81-A-3-d, ad. cf, 

 holotype: b, whole animal, dorsal view; c, same animal, lateral view from right side. 

 {a, c, X 125; h, X 65.) 



Antennules 7-segmented, 3rd segment very small. Setation repre- 

 sented in figm-e 13a; there is one aesthetasc on the last (7th) segment. 



Antenna (fig. \2g) at once remarkable by strong development of 

 apical claws. Coxa and basis smaU, former asetosa, latter with very 

 strong spine near internal apex. Endopodite either 1- or 2-segmented. 

 There are 6 setae (some of which are spmiform) and 2 strong claws. 

 5 setae and the bigger claw may be placed on a small apical endopodal 

 segment, of which the jointing with the 1st segment is very indistinct. 

 Proximal claw slender, internal margin finely denticulated along entire 

 length. Apical claw very strongly developed; the apical part, set off 



