INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 591 



Kereis pelagica Liuu. PI. XI, figs. 52-55. (p. 319.) 



SysteiUca natura', ed. x, p. 654 ; ed. xii, p. 1086; Malingren, Anuulata polychicta 

 p. 47, PL 5, figs. 35, A-D, 1867; Eblers, op. cit., p. 511, PI. 20, figs. 11-20, 1868' 

 Seteronereis grandifolia Malmgren, Nordiska Hafs-Anuulater, p. 108, PI. 11, figs. 

 15, 16, B, B', C ; Aim. polycliieta, p. 60, PL 5, figs. 31, A-D ; Heteroncrcis arctica 

 CErsted, Groeuland's Aumil. dorsibr., p. 27, PL 4, figs. 50% 51, 60, PL 5, figs. 65, 68 

 70*, male (t. Ehlers) ; Hcteronereis assimilis ffirsted, op. cit., p. 28, PL 4, figs. 

 54, 61, PI. 5, fig. 72, female (t. Ehlers). 



Off New Haven ; Watch Hill; Vineyard Sound ; northward to Labra- 

 dor. Greenland ; Iceland ; Spitzbergen ; northern coasts of Europe to 

 Great Britain. In the Bay of Fundy from low-water mark to 106 

 fathoms, common. 



Xereis fucata And. and Edwards, (p. 494.) 



Histoire nat. litt. dela France, vol. ii, p. 188 (teste Maltugreu); Lycoris fucaia 

 Saviguy, Syst. des Anuelides, p. 31, 1820 (t. Ehlers) ; Descr. de LEgypte, 6A. 

 2, xxi, p. 357 (t. Malmgren) ; NerdJepas fucata Malmgren, Anuulata polycha^ta, 

 p. 53, PL 3, figs. 18-18 E ; Johnston, Catalogue, p. 158, fig. 30, 1865. Hetero- 

 nereis glaiicojns Malmgren, Nordiska Hafs-Annulater, Ofvers. af Kongl. Vet. 

 Akad. Flk'h., 1865, p. 181, PL 11, figs. 16, 16 A; Aunulata polychseta, p. 60, PI. 

 4, figs. 26, 27, 1867. Nereis fitcatn Ehlers, Borstenwiirmer, vol. i, j). 546, PL 21, 

 figs. 41-44. 



A specimen was dredged at Watch Hill, Ehode Island, in 4 to 6 fath- 

 oms, among rocks and algte, which agrees well with Malmgren's descrip- 

 tion and figure of Heteronereis glancopls. Ehlers regards the latter as 

 the heteronereis-form of X. fucata. 



Nereis, species undetermined. 



Head sub-conical; antennte small, slender; palpi small, shorter, and 

 thicker; two upper i^airs of tentacular cirri moderatelj' elongated, sub- 

 equal, lower ones very small. Posterior eyes elongated and on the upper 

 side of the head; anterior pair small, lateral. Feet terminated by four 

 small papilla'; dorsal and ventral cirri small, slender. 



The only specimen observed is preserved in alcohol ; it is a female 

 filled with eggs. Vineyard Sound, G to 8 fathoms. 



Nectonereis Verrill, genus nov. • 



Head prominent, depressed, oval, rounded in front, bearing two pairs 

 of large eyes on the upper and lateral surfaces, and a pair of small 

 antennie beneath; palpi small or rudimentary. Tentacular cirri four on 

 each side, as in Nereis. Proboscis small, similar to that of Nereis, but 

 more simple; furnished with a pair of terminal hooks ; with two anterior 

 clusters of denticles on the upper side, and with five small clusters be- 

 low, in a ring extending nearly half-way around it. Anterior part of 

 body fusiform, consisting of about fourteen segments, on which the feet 

 are divided into small, rounded lobes, with small ventral cirri; and with 

 long dorsal cirri, those on the first seven segments swollen and gibbous 

 toward the end, with a small acute terminal portion. Posterior part of 



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