298 On some Neynertinea dw from the Falkkmds. 



Leptosomatum, Bastian. 



9. Leptosomatum setosum, v. Linst. 



Lepfosomattnn setosum, v, Linstow, 1806, p. 5 ; figs. 4-7. 

 lltoracostoina setosum, de ]\Ian, 1904, p. 25 ; pis. vi.-x., fig. 8. 

 Leptosomatum setosum, Leiper & Atkinson, 1915, p. 23 ; pi. i., figs. 8, 6, 9. 



Two female examples of tliis form were taken at low water 

 during spring tides, Feb. 21, 1902, together with nemertines. 



This species ajipears to occnr in any depth of water from 

 low-water nnnk down to 250 fathoms or more, and is widely 

 distributed in the subantarctic region. 



Thoracostoma, Marion, 1870. 

 10. Thoracostoma sp. 



A single female example occurred among the various other 

 species in association with Marphysa corallinaj July 22, 

 1910. 



Oligocha:ta. 



Marionina, Michaelsen. 



11. Marionina (jeorgiaiia (Mchlsn.). 



Eighteen examples of a small Enchytrseid worm, which I 

 refer to this species, were collected at Roy Cove or else- 

 where at low water. The collector's labels indicate that 

 they were taken in June and July, 1910, some being found 

 under stones, otliers, Avith various nematodes, in association 

 with Marphysa. 



• References. 



Baylis, H. A. 1915. British Antarctic ('Terra Nova') Exp., 1910, 



Zoolog}', ii. no. 5, p. 113. Nemertinea. 

 Leipeb.R.T., and E. L. Atkinson. 1915. Britisli Antarctic ('Terra 



Nova ') Exp., 1910, Zoologv, ii. no. 3, p. 19. Parasitic Worms. 

 Linstow, O. VON. 1896. Hamb. Magalh. Sammelr. Nematlielminthen. 

 Man, J. Gr. de. 1884. * Die frei lebenden Nematoden der Niederland- 



ischen Fauna.' 

 . 1888. "Sur quelques Nematodes libres de la Mer du Nord." 



M^ra. Soc. Zool. Fiance, i. p. 1. 



. 1904. Res. Voy. S.Y. ' Belgica,' Zoologie. Nematodes Libres. 



Marion, A. F. 1870. " Recherches sur les Nematodes non parasites, 



marins." Ann. Sci. Nat., Zool. (5) xiii. 

 Southern, R. 1914. "Clare Island Survey,'' Part 54. Proc. Roy. 



Irish Acad. xxxi. 



