POLYCHABTE WORMS, PART 1 231 



Genus Stauronereis Verrill, 1900 



Type (original designation): Stauronereis rudolphi (Delle Chiaje, 

 1828). 



Both species represented have the prostomium bluntly conical, 

 rounded anteriorly, with a pair of long lateroventral palps curved 

 posteriorly, transversely wrinlded and with a distinct distal ovoid 

 article, with a pair of articulated laterodorsal antennae (fig. 60a). 

 First 2 tentacular segments apodous, the first slightly longer than the 

 following; ventrally first segment with large mouth, anterior to which 

 are 2 prominent oval lateral lips. Dorsal cirri lacking on first setiger; 

 rest with long cylindrical cirrophores supported internally b}^ fine 

 acicula, distally with subulate cirrostyles (fig. 606). Ventral cirri 

 subulate, inserted ventrally near parapodial tips. Parapodia long, 

 cyHndrical, with a somewhat bilobed presetal lobe and conical post- 

 setal lobe, evidently mobile and quite variable in shape. 



Upper bundle of setae of 2 lands : (1) Long, slender, ending in delicate 

 capillary tips, finely den tided along one edge; (2) shorter forked setae 

 with branches unequal, denticled at base of shorter branch (figs. 60c, 

 61c^). Lower group of setae heterogomph compound falcigers with 

 distal blades short to long, with tips bidentate (fig. QOd). Proboscis 

 with a pair of dark ventral mandibles, usually showing through the 

 translucent integument, flared and denticled on anterior border (fig.60e). 



Key to the New England Species of Stauronereis 



1. Prostomium with 4 eyes (fig. 60a). Forked setae with 2 unequal stout 



branches (fig. 60c) S. rudolphi 



Prostomium without eyes (fig. 61a). Forked setae with 2 very unequal 

 slender branches (fig. Gld) S. caccus 



Stauronereis rudolphi (Delle Chiaje, 1828) 



Figure 60 



Slaurocephalus pallidus Verrill and Smith, 1874, p. 301. — Webster, 1879, p. 242; 

 1886, p. 145.— Webster and Benedict, 1884, p. 721. 



Stauronereis annulatus Moore, 1906a, p. 225, pi. 10, figs. 12-13, pi. 11, figs. 18-22. 



Slaurocephalus rudolphii Fauvel, 1923, p. 446, fig. 178.— Monro, 1933b, p. 92.— 

 Wesenberg-Lund, 1950a, p. 29, pi. 7, fig. 30. 



Stauronereis articulatus Hartman, 1938b, p. 101, figs. 39-44. — Rioja, 1941, p. 724, 

 pi. 6, figs. 10-18. 



Dorvillea rudolphii Hartman, 19426, p. 56, figs. 98-103; 1944a, p. 340, pi. 17, figs. 

 10-11, pi. 23, fig. 6; 1944d, p. 191; 1945, p. 27, pi. 5, figs. 2, 6; 1951, p. 66, 

 pi. 8, fig. 6.— Berkeley and Berkeley, 1948, p. 86, figs. 127-129.— Wesenberg- 

 Lund, 1962, p. 118. 



Dorvillea arliculata Hartman, 1944d, p. 189; 1960b, p. 106. — Rioja, 1947a, p. 

 205.— Reish, 1959, p. 84. 



Dorvillea annulata Berkeley and Berkeley, 1948, p. 87, fig. 130. 



Description.— Length up to 50 mm., width up to 3 mm., segments 

 up to 80 (when living, sometimes 70 mm. long and 0.7 mm. wide, very 



