250 U.S. NATIONAL MUSEUM BULLETIN 2 27 



43°3' N., 65°30' W., 70 fathoms, 1959, R. Wigley), Massachusetts (off 

 Martha's Vineyard, 157 fathoms, by Verrill as Nothria conchyphila, 

 figured) . 



Distribution. — ^Norway, Iceland to English Channel, Azores, West 

 Africa, Gulf of St. Lawrence to off Massachusetts. In 22 to 808 

 fathoms. 



Genus Diopatra Audouin and Milne-Edwards, 1833a 



Type (designated by Hartman, 1959a) : Diopatra amhoinensis 

 Audouin and Milne-Edwards, 1833a. Contains only one New 

 England species. 



Diopatra cuprea (Bosc, 1802) 



Figure 66 



Diopatra cuprea Verrill and Smith, 1874, pp. 52, 70, 77, 83, 128, 137, 140, 299, 

 pi. 13, figs. 67-68.— Webster, 1879, p. 236; 1886, p. 144.— Verrill, 1881, pp. 

 301, 317, 322, 323, pi. 4, fig. 5.— Webster and Benedict, 1884, p. 720.— 

 Andrews, 1891a, p. 285; 1891b, p. 113.— Not Wilson, 1882, p. 288 (= Onuphis 

 magna (Andrews). — Linville, 1903, p. 231. — Sumner, Osburn, and Cole, 

 1913, p. 621.— Monro, 1924, p. 193; 1933b, 71.— Treadwell, in Cowles, 1930, 

 p. 343.— Hartman, 1944a, p. 340, pi. 17, fig. 17; 1944d, p. 54, pi. 1, figs. 

 9-14; 1945, p. 26; 1951, p. 51.— Allen, 1951, p. 134; 1952, p. 197; 1953, p. 

 572; 1959, p. 339, pis. 1-5.— Renaud, 1956, p. 21, fig. 16.— Costello, et al., 

 1957, p. 73.— Day, 1960, p. 350. 



Description. — Length up to 300 mm., width up to 10 mm.; 

 segments up to 250. Anterior part of body cylindrical, rest flattened 

 dorsoventrally, tapering rather abruptly posteriorly. Integument in 

 general with thick iridescent cuticle, ringed or wrinkled. Pro- 

 stomium (fig. 66a) suboval with pair of short conical frontal antennae 

 and 5 occipital antennae with ceratophores ringed (about 8-10 rings), 

 the styles of the 3 dorsal ones subequal, longer than the 2 ventrolateral 

 ones. A pair of sensory organs present posterior to the bases of the 

 dorsolateral occipital antennae (sometimes incorrectly called eyes), 

 pale translucent raised circular areas. Ventrally a pair of large 

 globular palps present. Single buccal segment about same length as 

 the following, with a pair of subulate tentacular cirri; ventrail}^ with a 

 larger arched lower lip. 



Parapodia of fh^st 4 setigerous segments modified, slightlj^ enlarged, 

 extending anteriorly and ventrally, with short conical presetal lobes 

 and longer conical postsetal lobes, with few slender setae with capillary 

 curved tips and five or so curved hooded hooked setae with bidentate 

 tips. Dorsal cirri short, subulate on anterior few segments, extending 

 beyond the parapodial lobes, becoming longer, cirriform more pos- 

 teriorly. Ventral cirri short, conical on first 4 setigers, shorter, oval 

 to conical on setiger 5, wide flat cushionlike from setiger 6 on. 



