466 NEREIS ZONATA. 
1879. Nereis zonata, Vhéel. Polych. Nouv.-Zemb., p. 42. 
: Tauber. Annulat. Danic., p. 96. 
53 5) »  WVerrill, Check-list Annel. Atlantic Coast, p. 8. 
1880. Lycoris procera, Langerhans. Zeitschr. f. wiss. Zool., Bd. xxxiui, p. 285, pl. xv, fig. 11. 
1881. Nereis zonata, Horst. Polych. Barents Exped., p. 11. 
WKS 55 , levinsen. Vid. Meddel. nat. Forh. Copenhagen, p. 234. 
ISD, gy ,  Wirén. Chetop. “ Vega” Exped., p. 402. 
1888. ,, procera, De St. Joseph. Ann. Sc. nat., 7° sér., p. 266, pl. xi, fig. 132. 
1890. ,,  zonata, Malaquin. Annel. Boulon, p. 29. 
XA, gy ,  Marenzeller. Polych. Bremer Exped., p. 401. 
tS OA »  Bidenkap. Norg. Polych., p. 89. 
1897. ,, arctica, Michaelsen. Polych. Deutsch., pp. 18 and 102. 
1899. ,, procera, Allen. Journ. M. B. A., vol. v, p. 481. 
9 Oe , Johnson. Polych. Puget Sound, Proc. Boston Nat. Hist. Soc., vol. xxix, p. 400, 
pi. iv, fig. 47, pl. v, figs. 53—59. 
1908.  ,, zonata and cylindrata, Ehlers. Deutsch. Tiefsee Exped., pp. 68 and 71. 
INO, 54 , Southern. Proc. Roy. Irish Acad., vol. xxvii, p. 232. 
35 F ,  snellen et Ekama. Exped. Neerland. Kara, p. 123 (Utrecht). 
x ,  Ditlevsen. Danmark Exped. Gronland, Bd. v, No. 9, p. 419. 
5 i ,»  Hauvel. Polych. Camp. Arct., p. 28, pl. 1, figs. 1—6. 
OL ae , McIntosh. Ann. Nat. Hist., ser. 8, vol. x, p. 122. 
UO, og Allens Journey Vine SeAC ENS mv.Olapxom pen OllOs 
ONG, ¢5 , Fauvel. Annel. Pelag. Camp. Se. Monaco, p. 78, pl. vu, figs. 11—14. 
Eipitokous Form. 
1865. Heteronereis grandifolia, Malmgren (partim). Nord. Annel., p. 108, pl. xi, fig. 16. 
A i glaucopis, idem. Ibid., p. 181. 
1911. Nereis procera, Moore. Proc. Acad. Nat. Sc. Philad., vol. lxin, p. 245, pl. xv, fig. 18. 
Fauvel (1916) has done good service in showing that Nereis procera of Ehlers is only a 
variety of N. zonata. He has also given a careful description of the epitokous forms. 
Habitat—Lambay Deep, Irish Sea (Southern), Plymouth (Allen). 
It occurs frequently at Spitzbergen and Greenland (Malmeren, McIntosh), and has a 
wide distribution in northern waters, and at considerable depths. It also extends to the 
Persian Gulf (Fauvel). 
The head (Fig. 172) resembles that of Nereis pelagica in general shape, but the 
eyes are somewhat larger and the tentacles and tentacular cirri are longer and more slender. 
A band of dark pigment runs in the line of the eyes, and a stripe of white passes forward 
between them. 
The body has a distinctive coloration, viz., a pale reddish-brown hue in spirit, though 
Malmgren adds—yellowish or bluish to reddish brown. The examples from the ~* Valorous ” 
Expedition to the Arctic seas were distinctly banded with brown—a feature very evident 
in young specimens. The anal cirri are shehtly longer than in N. pelagica, though weight 
need not be put on this. The maxille of the proboscis have the same number of teeth, 
those of N. pelagica, perhaps, bemg usually more distinct, and the tip, if anything, 1s more 
slender (ig. 172). The paragnathi generally are finer than in N. pelagica, and I. is absent 
in the present examples as well as in those procured by the “ Valorous”’ in Greenland, and at 
