NEMERTEANS 225 



St. MS 70. 9. iii. 26. Maiviken, West Cumberland Bay. Sh. coll. 

 Tetrastemma esbenseni, n.sp. T. maivikenensis, n.sp. 



St MS 71. 9. iii. 26. East Cumberland Bay, 9J- cables E x S to 1-2 miles E x S of Sappho Point. 

 BTS, 110-60 m. 

 Amphiporus spinosus, Burger. 



NCS-T, 110-60 m. 

 Amphiporus lecointei, Burger. 



SYSTEMATIC ACCOUNT 



PART I. NEMERTEANS FROM SALDANHA BAY, 



SOUTH AFRICA 



Saldanha Bay lies on the west coast of Africa about sixty miles north of Cape Town. 

 The bay is a shallow sandy-bottomed inlet fifteen miles long. From the narrow en- 

 trance the bay turns south nearly parallel to the outer coast from which it is separated 

 by a ridge rising in some places into considerable hills. Dredging inside the bay was 

 very unproductive. The Nemerteans described here were collected mainly from the 

 roots of kelp torn from the boulders at low tide. A few were found beneath stones and 

 others in roots and kelp tangles washed up on the beaches. Although the conditions 

 near the two whaling stations were different from those on the outer coast there was no 

 apparent difference in the kelp root faunas except in size. The largest specimens came 

 from the outer coast. 



Twelve species were found, eight of which were already known from the Mediter- 

 ranean and coasts of northern Europe. Tubulanus nothus and Cerebratulus fuscus were 

 the commonest species, but the yellow Emplectonema ophiocephala was also frequently 

 captured. Limits geniculatus, another Mediterranean form, was collected at Annobon 

 Island in the Gulf of Guinea close on the equator. Three new species — Zygonemertes 

 capensis, Tetrastemma nigrolineatum and Oerstedia maadata — are described in the fol- 

 lowing section. 



The extension of range into the southern hemisphere appeared so important that 

 every effort has been made to verify the specific identity of the animals with the previous 

 descriptions. It is for this reason that the colour sketches of the worms in life are re- 

 produced (PI. XV). 



Order PALEONEMERTEA 



Genus Tubulanus, Renier 

 Tubulanus nothus, Burger (Plate XV, figs. 1,2; Figs. 1-4). 

 Carinella nothus, Burger, 1895, p. 527, pi. 1, fig. 12. 



Twenty-two specimens of this species were taken from kelp roots from the rocks be- 

 tween tide marks. The lengths ranged from 10 to 20 cm. The corresponding breadths 

 were o-6 mm. (head i-o) and i-omm. (head 1-5). One very large fragment of body 



