EASTERK CAKADIAN PLANKTON 91 



Tomopteris (Tomopteris) planktonis. A])>tein. 

 19O0. Apstein, p. 42. 

 1905. Eeibisch, p. 9. 

 1908. Kosa, p. 301. 

 1911, Malaquin et Carin, p. 14. 



The lengrth ranges from 3 to 6 mm. 



DISTRIBUTION. 

 C.G.S. Acadia. 



Station No •• 16 26 50 75 87 



Depth of Haul (m.) 200-0 (V) 100-0 (V) 145-0 (V) 325-0 (V) 290-0 (V) 



Length (mm.) 3-5 6 6 3 3 



Number 4+ 1 1x5 4 1 



Unlike the preceding, this species occurred only in the deep vertical hauls, and 

 never in the shallow tows. It has a somewhat similar horizontal distribution to that 

 of the preceding one, but is found at the equator as well as in the north, according 

 to Apstein (1900). Malaquin et Carin report it from a number of points from the 

 Canaries to north of the Azores and Rosa (1912., p. 8) has reported it from the 

 Adriatic. On our coast it occurred with the preceding species or at neighbouring 

 stations. In addition, the record at "Acadia" Station 87 shows that it extends in 

 the northern oceanic water for some distance up the Laurentian channel. It is thus 

 confined to the northern oceanic water and the northern part of the Gulf Stream. 



LITERATURE. 

 Apstein, C. 



1900. Die Alciopiden und Tomopteriden der Plankton-Expedition. Ergebnisse d. 

 Plankton-Expedition, Bd. II, H b. 

 BiGELOW, H. B. 



1914. Explorations in the Gulf of Maine, etc. Bull. Mus. Comp. Zool., Vol. 



LVIII, No. 2, pp. 31-147. 



1915. Exploration of the coast water between Nova Scotia and Chesapeake Bay, 



etc. Bull. Mus. Comp. Zool, Vol. LIX, No. 4, pp. 151-359. 

 Malaquin, a. et Carin, F. 



1911. Note preliminaire sur les Annelides i)elagiques provenant des campagnes de 



I'Hirondelle et de la Princesse-Alice. Bull, de I'Inst. Oceanographique 



de Monaco. No. 205. 

 Eeibisch, J. 



1905. Anneliden. Nordisches Plankton, Bd. X, pp. 17. 

 Rosa, D. 



1907. Diagnosi preliminari di nuovi Tomopteridi raccolti dalla R.N. " Liguria." 



Mon. Zool. Ital., ann. XVIII, pp. 176 and 177. 



1908. Anellidi — Parte I Tomopteridi. Raccolte Planctoniche, etc., V., pp. 248- 



327. 



1912. Nota sui tomopteridi dell'adriatico raccolti dalle R.R. Navi " Montebello " 



e " Ciclope." R. Com. Talass. Ital., Mem. XX, pp. 1-10. 

 Southern, R. 



1911. Polychasta of the Coasts of Ireland. III. The Alciopinae, Tomopteridep 

 and Typhloscolecidse. Fisheries, Ireland, Sci. Invest., 1910, III, pp. 37. 

 Wright, R. R. 



1907. I he Plankton of Eastern Nova Scotia Waters. Contrib. Canad. Biology 

 1902-1905, 39th Ann. Rep. Dept. Mar. and Fisheries, Fisheries Branch, 

 pp. 1-19. 



