POLYCHAETOUS ANNELIDS FROM CHINA — TREAD WELL 269 



mium and first 15 setigerous somites there are on either side 8 to 10 

 fine brownish lines starting at the posterior border and running antero- 

 do^sall3^ The dorsalmost of these bend toward the dorsal mid line 

 and do not reach the anterior margin. Others reach the margin, but 



Figure 19.— New species of Nereis 



a~e, Nereis {Neanthes) lima: a. Anterior end, X 5; 6, tentbi parapodium, X 12; c, poste- 

 rior parapodium, X 12; d, seta, X 300; e, seta, X 300. 

 /-!, Nereis {Neanthes) orientalis: f, Anterior end, X 5; g, epitokous parapodium, X 8; 



h, ttiird parapodium, X 12.5; i, seta, X 50. 



j-m, Nereis (.Neanthes) amoyensis: j, Anterior end, X 7.5; I:, ttiirtietb parapodium, 



X 45; /, seta, X 300; m, seta, X 300. 



the lines of successive somites do not unite. A few are forked toward 

 their anterior ends. In the first setigerous somite about one-fourth 

 of the mid-dorsal area is free from these lines, and this free portion 

 widens in later somites to occupy about half of the dorsal surface. 

 Behind the fifteenth somite the lines gradually shorten and are not 

 found behind the twenty-second. 



49206—36 2 



