NO. 3 HARTMAN : POLYCHAETOUS ANNELIDS 233 



5. Dorsal surface overlain, at sides, by closely imbricated, scalelike 

 expansions of the dorsal edge of the notopodia; notopodial and 

 neuropodial postsetal lobes greatly elongated, foliaceous (pi. 

 41, fig. 98) N. squamosa, p. 237 



5. Dorsal surface without imbricated lappets; parapodial lobes 

 otherwise 6 



6. Recurved cirri present from tenth or eleventh setigerous seg- 

 ment, absent from posterior fifth of body ; proboscis proximally 



covered with minute, conical, chitinous prickles 



A^. pimctata, p. 239 



6. Recurved cirri present from third to fifth setigerous segment, 

 continued through all or most of body length 7 



7. Prostomium with a pair of black eye spots on its posterior half 

 (pi. 41, fig. 100) ; recurved cirri present from third setige- 

 rous segment N. magellanica, p. 238 



7. Prostomium without black eye spots; recurved cirri present 

 from third setigerous segment or beyond 8 



8. Neuropodial postsetal lobes greatly elongated, expanded (pi. 

 39, fig. 87) in median and posterior parapodia, considerably 

 surpassing the corresponding notopodial lobe A'^. assimilis, p. 239 



8. Neuropodial lobes otherwise 9 



9. Acicular lobes conical; the aciculum projects from the distal- 

 most part of the lobe (pi. 42, figs. 106, 107) 



ISl . panamensis , p. 239 



9. Acicular lobes, at least in notopodia and usually also in neuro- 

 podia, are bilobed; the tip of the aciculum projects from the 

 lobe at its deepest part (pi. 42, fig. 110) 10 



10. Proboscis with a median dorsal papilla; postacicular setae stiff, 

 the spinose area extending nearly across the width where best 

 developed; pigmented pattern of prostomium and first few seg- 

 ments extensive 11 



10. Proboscis without a median dorsal papilla; postacicular setae 

 soft, silky, flowing; pigmented pattern of prostomium limited 

 A'^. calif orniensis, p. 240 



11. Recurved cirri first present from fourth segment; posterior 

 neuroacicular lobes bilobed ; recurved cirri slender, taper dis- 

 tally A^. caecoides, p. 240 



11. Recurved cirri first present from third segment; posterior 

 neuroacicular lobes conical (pi. 42, fig. 112); recurved cirri 



thick, blunt (pi. 42, figs. 110, 112) 



A^. caecoides ferruginea, p. 241 



