COPEPODA FROM IFALUK ATOLL 



33 



Figure S. — Cyclopina brachystylis G. O. Sars, loc. 589, ad. ?: a, whole animal, lateral 

 view from left side; b, same animal, dorsal view. (X 210.) 



somite much smaller; anal flap indistinct. There is a fine hyaline 

 lamella along the distal ends of all abdominal somites which, as far 

 as I could make out, is smooth. The various abdominal somites 

 have, with the furca, the following proportional lengths: 



somite 5 1 + 2 3 4 5 furca 



9 38 19 17 8 9=100 



Furcal rami parallel, each ramus sKghtly longer than wide (pro- 

 portions 4:5). There are 5 marginal setae and 1 appendicular seta 

 on each ramus (fig. 66). Appendicular seta and setae 1 and 4 small 

 and fme; appendicular seta very short, nude; setae 1 and 4 longer, 

 about haK length of apical setae 2 and 3, plumose. Setae 2 and 3 

 strong and lengthened, especially 2nd, which reaches % length of 

 abdomen; seta 3 is shghtly shorter. Both are set with dispersed, 

 spiniform hairs. 



