AiMi'iiiroDA Synoi'iuka. 13 



'V\ii' jdojxxla, |1M. I, li--. lt)|. 'I'Ik; i)(,-(|iinf:los arc (jllipl ical, Inn^-or 

 (liaii iIh! Ila^;(;lla; \\u' iiiiiiiImt of atiifuli in tlio outer fla^tdliiin of tlxj 

 lirst, |)air is 10, in lli<' imi'-r lla.L;olliiin 1). Tlio ciliji; of I Ik- flagolla 

 an; ii(;(luncnlat(Ml, loii.^-, plumose; tlio pc'lnncnlar pai-t lon;,^, but sliort(;r 

 llian (ho rest [PI. I, li-. 20J. 



Tlio urns \V\. I, Ho-. 21]. TIk; lirst scvL^nncnt is only a lilllo lon^n;r 

 IJi.ni till! s(;(;on<l (5: 4); t.li(! last is nearly as lon^- as tin; sc-cond. The 

 iinis is as long as tlic (iist l-lircu; porcional segiiients. The surlaee is 

 (jiiite smooth. 



The first jiair of uro/xxhi. The p(;(lunelo is linear, reaching to the; 

 |)oslerior margin ol" the last nral segment. The rami are nnerpial, the 

 inner niiieh tlu; longest, both ending with a strong movahle claw-like 

 spin(^ 'i'he outer rannis is shorter than the ))ednnele, limdy serruterl 

 along the iniKjr margin. Tlu; inner ramus is longer than the peduncle, 

 the inner margin smooth, carrying oidy one short spine at the middle and 

 two very small at the lower corner, at the base of the great claw-like spine. 



The second 'pair. Hie peduncle does not reach to the posterior 

 margin of the last segment; the rami are unequal in length, the inner the 

 longest, both ending with short, feebly curved spines, two in each. Both 

 rami are smooth on the outer margins and finely serrated along the inner. 



The third pair. The ])edunele is very short, luoader behnv; the 

 rami are uiMMpial in length, the tniter tlie longest. The outer ramus is 

 two-j(jinted, the terminal joint e({uals a third of tlie length of the basal 

 joint, 'i'he outer margins of both rami are smooth, the lower parts of 

 the inner margins carry four simple iiairs in the outer ramus, three 

 in the inner one; at the lower end of the terminal joint of the outer ramus 

 there arc two minute spines. The lower end of the inner ramus carries 

 also two minute spines and between them two long, strong hairs. 



The telson is very large, triangular, obliquely truncated behind, 

 divided beyond the middle by a longitudinal tissure. At the lower 

 ends there are scmie minute spines. The telson is longer than the 

 peduncle of the last pair of iiropoda, almost as long as the last two 

 ural segments together. 



Colour. Ultramarine (iJana), hyaline. 



Length. 5 — 6 m.m. 



Hab. The tropical parts of the Atlantic. (8.M. U.M. CB.) 



