10 



NEPHTHYS C^CA. 



1874. Nephthys cseca, Malm. Amer. Journ. Sc., x, p. 39. 



1875. „ „ Verrill. Proc. Amer. Ass. So., 1873, p. 370. 

 „ „ „ Mcintosh. Mar. Invert. St. Andrews, p. 118. 

 „ „ „ Mobius. Unters. Dentsch Meer., p. 168. 



1878. „ „ Mcintosh. Trans. Linn. Soc, 2nd ser., i, p. 501. 



1879. „ „ Tauber. Ann. Danic, p. 83. 



„ Theel. K. Sv. Yet. Akad. Handl., xvi, No. 3, p. 30. 

 „ „ „ Yerrill. Check List., U.S. Comm. F. and F., sep. copy, p. 7. 



1880. „ {cseca) margaritacea, Grraber. Arch. f. Micros. Anat., xvii, p. 289, pi. xxviii., 



fig. 14, and pi. xxix, fig. 15 — 18. 



1881. „ longosetosa, E. Horst. ("Willem Barents'' Bxped., 1878.) Niederl. Arch. f. Zool. 



Suppl. 1, 5, p. 8, Taf. f. 1. 

 „ „ ciliata, idem. Ibid., p. 7. 



1883. „ caeca, Wiren. Chastop. ' Vega' Exped., p. 392. 



„ „ „ Levinsen. Yidensk. Meddel. Foren., Kjoben, p. 217 (Syst.-geogr. Overs. Nord. 



Annel., p. 60). 

 1886. „ „ Schack. Anat. Histol. Untersach., Kiel. 



1890. „ „ Malaquin. Rev. Biol., v, Annel. Bonlon, 32. 

 „ „ bononensisj idem. Ibid. 



„ „ cseca, Marenzeller. Annel. Beringsm., p. 1. 



„ „ „ Giard. Bull. Sc. Fr. Belg., t. xxii, p. 76. 



1891. „ „ Hornell. Trans. Biol. Soc. Liverp., vol. v, p. 244 (exclus. synon.). 

 1893. „ „ Levinsen. Yidensk. UcL, " Hauchs," p. 337. 



1896. „ „ Michaelsen. Polych. deutsch Meere., p. 25. 



1899. „ „ (sexual var.), Mcintosh. Nat. Sc. (May), p. 375. 



1900. „ „ Mcintosh. Ann. Nat. Hist., ser. 7, vol. v, p. 257. 



1901. „ „ Whiteaves. G-eol. Snrv. Canada, No. 722, p. 82. 



„ „ ,, Johnson. Proc. Bost. Soc. Nat. Hist. vol. xxix, No. 18, p. 401. 



1904. „ ,, Allen. Journ. M.B.A., n.s., vol. vii, p. 225. 



1906. „ ,, (movements) Bohn. Ann. Sc. Nat. 9 e ser., t. iii, p. 107. 



„ „ „ (segm. org.) Fage. Ibid., p. 286. 



Habitat. — Common everywhere around the shores of Britain from Shetland to the 

 Channel Islands in sand near low-water mark, and extending some distance shorewards. 

 In the outer Hebrides it would seem occasionally to be in the way of deluges of rain, 

 but probably the moist sand preserves it from the injurious influence of fresh water, as 

 described by Dr. Drummond. It is often accompanied by Arenicola in the sand or muddy 

 sand. It is also tossed on shore in storms after dislodgment from its sandy retreats or 

 its haunts amidst fragments of shells and nullipores. 



Extends to the shores of France (Zostera-fields, De Quatrefages), Northern 

 Europe, Spitzbergen, and Greenland. American coasts, both east and west. — Pacific, 

 Puget Sound (Johnson). Canada (W.C.M.). 



Head (Plate LVII, figs. 1 and 2) more or less square, truncate anteriorly with a 

 short conical tentacle at each angle. Behind and beneath the latter is another somewhat 

 broader conical tentacle (palpus, Kinberg). In lateral view the head is shovel-shaped — 

 thinning off towards the tip. In the slanting (converging) furrows at each side posteriorly 

 is a little elevation or flap (with a lens-like apparatus, Ehlers). Brain reddish. 



