292 EUNOA NODOSA. 



small tubercles and occasional parasitic growths, while a little within the posterior 

 margin is a row of larger, isolated, rounded tubercles ; dorsal bristles distinctly shorter 

 than the ventral. The dorsal cirri have the structure of the tentacular cirri shorter 

 than in E. oerstedi ; ventral cirri smooth. Segmental papilla cylindrical, passing from 

 the posterior border of the foot, and directed upward between the feet. A dilated 

 process occurs at the base of the dorsal cirrus. 



Synonyms. 

 1860. Polynoe nodosa, Sars. Vid. selsk. Forhandl., 1860, p. 59. 



1865. Lepidonotus pharetratus, Johnst. Cat. B. M., p. 113, pi. 3, f. 17 — 19. 



1866. Antinoe zetlandica, Ray Lankester. Trans. Linn. Soc, xxv, p. 377, pi. 51, f . 13, 17, 18, 22, and 23. 



1867. Eunoa nodosa, Malmgren. Nord. Hafs-Ann., p. 64, Tab. viii, f. 4, and Ann. Polych., p. 6. 

 „ Antinoe pharetratus, Parfitt. Cat. Ann., Devon, p. 18. 



1872. Eunoe nodosa, Sars. Nyt. Mag. f. Naturvid., 19, p. 202. 



1873. „ „ Sars. Bid. Christ. Fauna, p. 2. 



1874. „ „ Malm. Goteborgs Kongl. Vet. o. Vitt. Samhalles Handl ; Ny. Tidsfoljd, Haft. 



xiv, p. 74. 

 1876. Eunoa nodosa, Mcintosh. Trans. Z. S., ix, 374, pi. 67, f. 4—8. 

 1879. Polynoe scabra, Theel. Annel. Nov. Zemb., 7. 

 „ Eunoa nodosa, Tauber. Ann. Danic, 81. 



1883. „ „ Wiren. Chset. Vega-Exped., 387. 

 „ Harmothoe nodosa, Levinsen. Nord. Annul., 193. 



1884. Eunoa nodosa, Webster and Benedict. Ann. Mass., 700. 

 1886. Eunoe scabra, Marenzeller. Porif., &c, Jan Meyen, p. 11. 



Habitat, — North Sea, Lieutenant Thomas ; Zetlandic Sea, Dr. Gwyn Jeffreys ; off 

 Holy Island, Tynemouth, 25 — 30 fathoms, Professor G. S. Brady ; stomach of the cod, 

 St. Andrews, E. M. 



A fine example, from the collection of the late Dr. D. Robertson, comes from 

 Cumbrae, on the west coast of Scotland, but none have yet been received from the coast 

 of Ireland. 



It ranges to 690 fathoms on the Channel Slope, ' Porcupine,' and 125 fathoms off 

 Cape Rosier in the Gulf of St. Lawrence (Whiteaves), and thence to Cape Cod (Verrill). 

 Malmgren gives the shores of Spitzbergen, Greenland, Finmark, and Scandinavia. 



Length 1| in. to 2J in. (Clyde). Some of the foreign examples are about 2^- in. 



Head (Plate XXVII, fig. 9). — Nearly as broad as long, with a median sulcus in front, 

 the sides trending to the peaks, which are free from the base of the median tentacle, the base 

 of which extends outwards from the sulcus. No specimen had a tentacle, but Malmgren 

 observes it resembles that of E. oerstedi, which is covered with long cilia with clavate 

 tips. Moreover, towards the swollen distal region, below the filiform tip, a few large 

 conical papillae with bifid tips are present — probably as an abnormality. This, however, 

 may differ considerably from the organ of E. nodosa — which may be less elongate, and 

 have shorter cilia. The lateral tentacles are short, with small clavate cilia and a filiform 

 tip. The tentacular cirri are similar to the median tentacle, but shorter. The eyes are 

 comparatively large, two being situated in front of the posterior border towards the 

 lateral region, and two just in front of the lateral projection of the head. The palpi 



