[591] INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 297 
NEREIS PELAGICA Linn. PI. XI, figs. 52-55. (p. 319.) 
Systema nature, ed. x, p. 654; ed. xii, p. 1086; Malmgren, Annulata polychwta 
p. 47, Pl. 5, figs. 35, A-D, 1867; Ehlers, op. cit., p. 511, Pl. 20, figs. 11-20, 1868. 
Heteronereis grandifolia Malmgren, Nordiska Hafs-Annulater, p. 108, Pl. 11, figs. 
15, 16, B, B', C; Ann. polycheta, p. 60, Pl. 5, figs. 31, A-D; Heteronereis arctica 
(Ersted, Greenland’s Annul. dorsibr., p. 27, Pl. 4, figs. 50*, 51, 60, Pl. 5, figs. 65, 68 
70*, male (t. Ehlers); Heteronereis assimilis Cirsted, op. cit., p. 28, Pl. 4, figs. 
54, 61, Pl. 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. 
NEREIS FUCATA Aud. and Edwards. (p: 494.) 
Histoire nat. litt. de la France, vol. ii, p. 188 (teste Malmgren); Lycoris fucata 
Savigny, Syst. des Annélides, p. 31, 1820 (t. Ehlers); Deser. de Egypte, éd. 
2, xxi, p. 357 (t. Malmgren); Nereilepas fucata Malmgren, Annulata polycheta, 
p. 53, Pl. 3, tigs. 18-18 E; Johnston, Catalogue, p. 158, fig. 30, 1865. Hetero- 
nereis glaucopis Malmgren, Nordiska Hafs-Annulater, Ofvers. af Kongl. Vet. 
Akad. Forh., 1265, p. 181, Pl. 11, figs. 16, 16 A; Annulata polychexta, p. 60, Pl. 
4, figs. 26, 27, 1867. Nereis fucata Ehlers, Borstenwiirmer, vol. i, p. 546, Pl. 21, 
figs. 41-44. 
A specimen was dredged at Watch Hill, Rhode Island, in 4 to 6 fath- 
oms, among rocks and alge, which agrees well with Malmgren’s descrip- 
tion and figure of Heteronereis glaucopis. Ehlers regards the latter as 
the heteronereis-form of . fucata. 
NEREIS, species undetermined. 
Head sub-conical; antenne small, slender; paipi small, shorter, and 
thicker; two upper pairs of tentacular cirri moderately 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 papille; dorsal and ventral cirri small, slender. 
The only specimen observed is preserved in alcohol; it is a female 
filled with eggs. Vineyard Sound, 6 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 
antenne beneath; palpismall orrudimentary. 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, ina 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 
