IS6 DISCOVERY REPORTS 



The lobes of the feet are short, and in the anterior region the posterior lobe projects 

 well beyond the anterior: it is more or less triangular in shape. In the hinder region the 

 lobes are subequal, the posterior being more pointed than the anterior. In the front 

 region the bristles consist of bordered capillaries and compound crochets. Farther back 

 the compound crochets are replaced by simple crochets, and the dorsalmost bristle in 

 each foot is a giant simple crochet. In the hinder region the capillary bristles lose their 

 borders and disappear a short distance from the end of the body. 



The lower jaw is short and rather stout. In the upper jaw M. I is a pair of pincers; 

 M. II is a pair of heavy plates with three teeth; M. Ill has two teeth; M. IV is a pair 

 of large plates without clearly defined teeth. 



Genus Ninoe, Kinberg 

 Prostomium conical and devoid of appendages. In the front region the hinder lip of 

 the foot breaks up into a number of cirriform branchial processes. Bristles winged 

 capillaries and simple crochets. Upper jaws with a pair of mandibles and three pairs of 

 plates . 



Ninoe falklandica, n.sp. (Fig. 28 a-l). 

 Occurrence. St. WS 212 (i). 



Specific characters. The single specimen measures 59 mm. by 2 mm. for no 

 chaetigers. The body is scarcely at all tapered in front. The marked shortness and 

 crowding of the segments in the anterior region observed by me (Monro, 1933, p. 89) 

 in Ninoe chilensis is absent in this specimen, where the anterior segments are only three 

 times as broad as long. The head is a pointed cone and lateral grooves are not evident. 

 Ventrally the second apodous segment is continued forward in the median line to form 

 the lower edge of the mouth (Fig. 28*7), exactly as described by Gravier (191 1, p. 79) 

 for Ltimbrinereis magaJhaensis . For about the first dozen chaetigers there is a gradual 

 increase in size of the feet from before backwards. In the first two chaetigers (Fig. 286) 

 the feet consist of a very short anterior lobe and a blunt triangular posterior lobe. By 

 the 3rd chaetiger the posterior lobe is beginning to bud off a dorsal cirriform process 

 (Fig. 28 c, d). By the 6th foot the posterior lobe has three slender branchial processes 

 of which the uppermost is the largest. These branchial processes increase in number up 

 to about the 15th chaetiger, where they show a maximum of six filaments (Fig. 28 e). 

 The upper is always the largest and perhaps represents a dorsal cirrus. The branchiae 

 disappear by the 32nd chaetiger. 



In the postbranchial region the lips of the foot are short, rounded, subequal and the 

 hinder lip is gathered at its apex to a small rounded process (Fig. 28/). The feet are 

 supported by short, dark brown acicula which vary in number according to the region 

 of the body in which the feet are situated. Their maximum number of four or five is 

 reached in the middle of the branchial region. 



The first two or three feet have an upper bundle of bordered capillary bristles and a 

 lower bundle of long, rather stout bristles with blunt heads and narrow borders which 

 at first sight are not at all like a lumbrinereid crochet. In fact they are elongate 



