DBILONEBEIS LONGA. 393 



sistence of those of Arabella. Foot with a small dorsal lobe; winged bristles and stout 

 spine-like bristles, both hooked and compound bristles being absent. 



1. Dbiloneb.uis longa, Webster, 1879, var. Elisabeth^. 1 Plate LXII, figs. 7, la and lb — 

 head and teeth ; Plate LXX1V, fig. 4- foot ; Plate LXXXIII, figs. 1 and 1 a— 

 bristles. 



Specific Characters. — Head a short blunt cone, with four eyes in a transverse line at 

 its posterior border and a lunulate central mark. Body 4 or more inches long, of the 

 shape of Lumbrlconereis, and easily recognized by its finer and more persistent iridescence. 

 Proboscis has powerful black, much-curved maxillae with a broad base, having about 

 three teeth on the inner edge, articulating posteriorly with the very long black processes. 

 Great dental plates elongate, black and nearly rhomboidal. Each has from six to eight 

 teeth along the inner edge. Antero-lateral plates, three, small, each with a single long, 

 sharp fang, the posterior and larger having in addition a second small tooth at the base 

 of the larger fang. Mandibles wedge-shaped, horny, dark brown, the anterior edge 

 rounded and rough. Typical foot has a small dorsal lobe sloping outward and upward, a 

 short setigerous lobe with four or five ordinary spines and a larger stout spine below the 

 others, and a broadly lanceolate inferior lobe directed upward. Bristles simple winged 

 tapering forms with oblique striae on the wings. 



Synonyms. 



1879. Drilonereis longa, Webster. Trans. Albany Inst., vol. ix, p. 40, pi. vii, f. 84 — 88. 



1885. Laranda „ Mcintosh. Annel. ' Challenger/ p. 237, pi. xxx, f. 10; pi. xxxvii, f. 5. 



1903. Drilonereis Elisabeths, Mcintosh. Ann. Nat. Hist., ser. 7, vol. xi, p. 562. 



Habitat. — First procured at St. Andrews in the stomach of a haddock, in 1869, and 

 afterwards in the stomach of the cod (E. M.). S.W. Ireland in forty fathoms; log 29, 

 E. Irish Acad., 1885. 



Shores of Virginia and New Jersey (Webster). 



Head (Plate LXII, fig. 7), forming a short blunt cone, finely iridescent like the rest 

 of the animal, and with the four eyes at its posterior border, in a transverse line. These 

 have been omitted in the figure. 



Body 4 or more inches in length, tapering slightly anteriorly and more distinctly so 

 posteriorly. It is easily recognized amongst the other members of the group by its finer 

 and more persistent iridescence. The colour on the dorsum consists of four longitudinal 



bands. 



The first two segments are devoid of feet as in the other members of the group, 

 and a lunular median mark occurs in the line of the segment-junction between them. 



Proboscis. — The dental apparatus (Plate LXII, fig. 7 a) consists of a pair of powerful 

 black maxillse, massive at the base posteriorly and strongly curved in front. The 

 broad base formed by these organs differs from that in most of the group, and especially 

 from the condition in Lumbriconereis and Eunice. The two halves touch in the middle 

 fine posteriorly and articulate with the V-shaped end of the very long posterior black 



1 Named after the lady who found it. 



107 



