66 ZOOLOGISCHE MEDEDEELINGEN — DEEL JF. 



armature of the proboscis as well as by the shape of the parapodia. 

 The incomplete specimen has a length of 35 mm. and consists of 60 seg- 

 ments. With regard to the arrangement of paragnaths it belongs to the 

 sub-genus Neanthes, having pin-shaped teeth upon all the areas of the 

 proboscis. The paragnaths of group I are represented by four teeth, as 

 usually one behind the other; II is a semilunar group, passing inwards 

 into a monostichous row; IY is a triangular group, also prolongated by 

 un inward, simple row; III is a transverse group, consisting of small 

 paragnaths in front and larger ones posteriosly. In the oral region group 

 Y consists of six teeth, arranged in two parallel longitudinal rows ; YI is 

 a transverse group of eight paragnaths arranged in two rows, one behind 

 the other, YII and VIII is a broad belt, consisting of several rows. This 

 arrangement of the paragnaths much agrees witli that of .V. operUt, as 

 figured by Willey, Plate XIII, figs. 11 and 12, of his, „Polychaeta from 

 the Cape of Good Hope" '). With regard to the shape of the parapodia 

 it also much resembles that species, for in the anterior segments the 

 dorsal cirrus has nearly the same length as the dorsal ligule, whereas 

 in the posterior body-region the ligule grows longer and more acute and 

 the dorsal cirrus extends not much beyond half its length. Willey has 

 described two other Xea tithes-species from the Cape; in Neanthes latipalpa 

 typica however group YI consists of a monostichous row of paragnaths 

 like as in Nereis brevimrris Gr. from St. Paul, a species presumably 

 identical with Nereis latipalpa. In the third species Neanthes eapemsis 

 group YI consists of 5 to 6 paragnaths arranged in a circle, whereas 

 the parapodia have a dorsal cirrus that extends beyond the distal extre- 

 mity of the dorsal ligule. 



1) Trans. Liuu. Society of London, (2e Ser.) Vol. IX, Zoology, 1903— '07, p. 255. 



