26 



U.S. NATIONAL MUSEUM BULLETIN 227 



Figure 6. — Polynoidae, a-c, Enipo gracilis (after Verrill, 1874a) : a, lower neuroseta; b, upper 

 neuroseta; c, notoseta. d-f, Enipo canadensis: d, dorsal view anterior end; <f, upper 

 neuroseta; /, middle neuroseta. g-i, Enipo torelli: g, prostomium; h, upper neuroseta; 

 », middle neuroseta. j-k, Arcteohia antic ostiensis (after Mcintosh, 1874): /, upper neu- 

 roseta; k, lower neuroseta. /-m, Harmothoe acanellae (after Verrill, 1885a):/, parapodium; 

 m, neuroseta. 



smooth, without papillae or tubercles. Prostomium with distinct 

 cephalic peaks, with 4 small eyes. Notosetae widest basally tapering 

 gradually to short capillary tips. Neurosetae with long shafts and 

 enlarged distal spinous regions, ending in short slender tips. Color: 

 body colorless; elytra with crescent-shaped pale to light rusty-brown 

 areas on medial halves. 



