338 NEREIS (NEREILEPAS) FUCATA. 



1908. Nereis fucata, Ehlers. Deutsch. Tiefsee-Exped., p. 71. 



1909. Nereilepas fucata Elwes. Journ. M. B. A., n.s., vol. viii, p. 351. 



„ „ „ Lo Bianco. Mittli. Zool. Stat. Neap., Bd. xix, p. 582. 



Forma epitoca. 



1771. ? Die faserige Nereide, 0. F. Miiller. Yon Wiirmern, p. 144, Tab. viii. 



1776. Nereis fimbriata, idem. Proclr. Zool. Danic, No. 2627. 



1791. „ „ Linn. Syst. Nat. (Gmelin), ed. 13, i, pt. 6, p. 3115. 



1833. „ podophylla, Audonin and Edwards. Ann. Sc. Nat., t. xxix, p. 211, pi. xiii, f. 13. 



1834. „ „ idem. Annel., p. 189, pi. iv a, f. 13. 

 1865. Nereilepas fimbriatus, De Quatrefages. Annel., t. i, p. 559. 



,, ,, margaritaceus, idem. Ibid., p. 562. 



„ Heteronereis margaritacea, Johnston. Cat. Worms Brit. Mns., p. 166. 



,, „ renalis, idem. Ibid., p. 163. 



„ „ glaucopis, Malmgren. Nord. Hafs- Annul., p. 110, Taf. xi, f. 16, 16 a. 



1867. „ „ idem. Annul. Polych., p. 60, Taf. iv, f. 26, 27. 



1869. Nereis fucata, Grube. Sehles. Qesell., 1868—9, p. 113, sep. copy, p. 5. 

 1874. Heteronereis glaucopis, Malm. Groteb. vet. o. vitt. Handl., xiv, p. 84. 

 1888. Nereis fucata, Wiren. Svensk. Yet. Akad. Handl., Bd. xiv, afcl. iv, No. 5, p. 1—14, Taf. i— iii. 



3, ,, „ B inquilina, idem. Ibid., p. 9, Taf. i — iii. 



Habitat. — Generally distributed round the shores of Britain, including Ireland, from 

 the eastern to the western borders. Abundant in deep water off St. Andrews Bay, and 

 frequently commensalistic with Pa gurus Bemhardus in Buccinum, both the large and the 

 smaller (littoral) varieties, and in Fusus Islandicus. Part of the annelid is inserted within 

 the shell, and the anterior region lies along the lip. Large examples are also thrown on 

 the beach after storms (E. M.). Dr. Johnston found his specimens in the same or allied shells 

 with Hermit-crabs. Stomach of cod and haddock, St. Andrews (E. M.). Large examples 

 from the deep water off Montrose (Dr. Howden). In 80 fathoms eighteen miles west of 

 Skellig, Ireland (J. Gr. Jeffreys). Torquay (Elwes). 



Shores of France (Audouin and Edwards). North Sea (Ehlers, Levinsen, etc.). 

 Eastern American shores (Verrill). 



Head (Plate LXI, fig. 6) of the typical shape, terminated anteriorly by two subulate 

 tentacles which are about the length of the head. Eyes black, comparatively large, the 

 anterior pair somewhat wider apart, and often larger than the posterior. The palpi are 

 normal, and the tentacular cirri of moderate length. 



Body 4 — 8 or 9 ins. in length, slightly narrowed anteriorly, and diminished to a 

 slender tail terminated by two long cirri posteriorly. Segments from ninety-five to one 

 hundred and ten. The peristomial segment is wider than the succeeding. The general 

 hue is buff, enlivened by two white streaks along the dorsum with the red dorsal blood- 

 vessel between, and a clotted white line along each side. The two median white lines 

 begin at the base of the tentacles, enlarge before reaching the eyes, between which they 

 pass, and again contract behind them on the first segment. They continue to the tip of 

 the tail, the last segment having a conspicuous white patch. On the arch of each segment 

 a white streak passes outward toward the white dorsal process of each foot. In the 

 anterior feet the white pigment is less developed, and it is rare for the pigment on the 

 arch of the foot to unite with the central white lines. The palpi are white, only the 



