ARICIIDAE 145 



and the thoracic crochets are confined to the ventral part of the ramus. The arrangement 

 is well shown in Ehlers' fig. 137, except that he does not indicate the ordinary crochets 

 at the base of the ramus and, moreover, in my specimens there is no single spear- 

 headed bristle projecting clear of the body at the dorsal apex of the ramus. 



The abdominal region has an intermediate cirrus and two acicula in the dorsal ramus 

 and one in the ventral. Forked bristles are present. 



I believe the arrangement of the spear-headed bristles to be characteristic of this species. 



Genus Nainereis, Blainville 



Nainereis hexaphyllum (Schmarda). 



Theodisca {Anihostoma) hexaphylluw, Mcintosh, 1905, p. 63, pi. v, figs. 27-29. 



Scoloplos {Naidonereis) hexapliyllum, Augener, 1918, p. 421, pi. vi, figs. 153-154; pi. vii, 



fig. 260, text-fig. 59. 



Saldanha Bay, South Africa, 1926. Beach Collection. Two specimens. 



Remarks. Two young specimens, the largest measuring 11 mm. by 2 mm. 



Genus Scoloplos, Oersted 

 Scoloplos mawsoni, Benham. 



Benham, 1921, p. 78, pi. ix, figs. 91-94. 



Scoloplos kerguelensis, Gravier, 191 1, p. 108, pi. v, figs. 60-63. 



Non-Scoloplos kerguelensis, Mcintosh, 1885, p. 355, pi. xxiiA, fig. 19, pi. xliii, figs. 6-8. 



St. 29. 16. iii. 26. West Cumberland Bay, South Georgia. 5-9 miles S 51° W of Jason Light. 

 23 m. Gear DC. Bottom: mud and stones. Eight specimens. 



St. WS32. 2i.xii. 26. Mouth of Dr}'galski Fiord, South Georgia. 225 m. Gear BTS. Bottom: 

 grey mud. Three specimens. 



Remarks. The average size is about 20 mm. by -5 mm. These specimens agree with 

 the accounts given by Gravier and Benham. In the posterior segments there are filiform 

 cirri as in S. armiger. 



Benham, who has had a very large number of specimens for examination, claims that 

 this form is separate from the S. kerguelensis of Mcintosh, Fauvel and others. I have 

 not sufficient material to form an opinion of my own. Fauvel has recently (1927, p. 21) 

 made S. kerguelensis, Mcintosh, a synonym of S. armiger. If Benham and Fauvel are 

 both right, there are two Antarctic species of Scoloplos known, S. mawsoniand S. armiger. 



Scoloplos armiger (O. F. Miiller). 



Fauvel, 1927, p. 20, fig. 6 k-q. 



St. 90. 10. vii. 26. Simon's Town, False Bay, South Africa. Basin of H.M. Dockyard. 0-2 m. 

 Gear NH. One specimen. 



ly 



