8 Setae present on segment 2; formula: 0— — \- S — 4 



3' No setae on .segment 2; formula: 0— + 0—. [Dorsal cirri 



asymmetrical and broader than long] Eteone tactea 



4 Dorsal tentacular cirrus shorter than ventral one. Posterior 



dorsal cirri asymmetrical, longer than broad Etcoiie lieteropvda 



4' Dorsal tentacular cirrus as long as ventral one. Dorsal cirri 



almost symmetrical and as broad as long (£■. Uniga) No N.C. record 



5 Three tentacular cirri on three segments with setae from 



.second; formula: 1 + S— -+ S — . {Fruliiiin/stifhs}. Dorsal 



N N 



cirri long and hastate P. bidnitata 



5' Three tentacular cirri on two segments with setae from third; 



formula: 1 + 0--+ S-rr- {Hf^iomini). Dorsal cirri fusi- 



1 N 

 form and much shorter than ventrals H. cUmgata 



6 Four frontal antennae and a similar middorsal one (£""/«//«) 7 



6' Four frontal antennae but no middorsal one, a minute occipital 



papilla sometimes present 10 



7 Setae on both second and third tentacular segments; formula: 



1 + S— + S — . Setigerous lobe bluntly rounded apically 8 



7' No .setae on any tentacular segment; formula: 1 + 0— — h — . 



Setigerous lobe with a pointed superior projection apically . . . . E. (Ptwocirrux) mncrocernfi 



8 First tentacular segment not visible dorsally, second and third 



distinct (subgenus Ernnida). Proboscis almost smooth E. (Enniidd ) snugiiiiiva 



8' All three tentacular .segments di.stinct and separate (subgenus 



E/ilalia). Proboscis den.sely covered with papillae 9 



9 Dor.sum yellow with a pair of lateral stripes. Dorsal cirri 



bluntly oval E. (Enhtlkij hU'mcata 



9' Dorsum uniformly green. Dorsal cirri hastate, pointed E. (Enlaliu) rlridis 



10 Prostomium with a median posterior projection embraced by 



broad "shoulders" formed of fused first and second tenta- 

 cular segments. [Setae from third tentacular segment; 



formula: 1 + 0^+ S-hr(Panuiaitis)] 11 



1 N 



10' Prostomium truncate or notched posteriorly. Fir.st and second 



tentacular segments not forming broad "shoulders". {Pln/l- 



lodoce) 12 



11 Dorsal cirri reniform P(tm)iii/tis knstrrioisis 



ir Dorsal cirri asymmetrically oval PtiraiiaiHx spceiasa 



17 



