106 



U.S. NATIONAL MUSEUM BULLETIN 227 



dC 



Figure 28. — Hcsionidae, a-b, Podarke obscura: a, prostomium; b, parapodium. c-d, 

 Gyptis vittala: c, prostomium; d, parapodium. e, Nereimyra punctata, parapodium. 



Genus Gyptis Marion and Bobretzky, 1875 



Type (monotypy) : Gyptis propinqua Marion and Bobretzky, 1875. 

 Contains only one New England species. 



Gyptis vittata Webster and Benedict, 1887 



Figure 2S,c,d 

 Gyptis vittata Webster and Benedict, 1887, p. 716, pi. 1, figs. 21, 22, pi. 2, fig. 2.3. 



Description. — Length up to 6 mm., width including setae up to 

 2 mm. Body widest in the middle region, tapering anteriorly and 

 posteriorly, convex dorsally, flattened ventrally. First tentacular 

 segment not visible dorsally, with 2 pairs tentacular cirri lateral to 

 prostomium. Next 3 achaetous tentacular segments distinct but 

 crowded, each with 2 pairs tentacular cirri. Tentacular cirri articu- 



