140 " ENDEAVOUR " SCIENTIFIC RESULTS. 



The chsetae are as follows : — The notopodial bundle consists 

 of very long homogomph spinigers. The neuropodial supra- 

 acicular bundle contains homogomph spinigers and rather 

 fewer heterogomph faleigers (PI. xlvi., fig. 13), while in the 

 sub-acicular bundle there are only a great number of hetero- 

 gomph faleigers (PL xlvi., fig. 12). The spinigers have a 

 long delicate appendix of the same length and structure 

 throughout the body. The appendix of the faltate chaeta 

 is rather long, and finely setose. There is a slight difference 

 in the form of the articular cup of these chsetse in various 

 j3arts of the foot and in different segments, as may be seen 

 in the figures. 



The first and second parapodia have ventral bundles only ; 

 all the appendices are broken off in the first foot, but in the 

 second some of the sub-aciculars are heterogomph spinigers, 

 with a shorter appendix than in the homogomphs. The 

 third foot also has similar chsetse in the sub-acicular bundle, 

 and the appendix of the falcate is longer than in the posterior 

 feet. 



The jaws. — The maxillse are brown, with 7-8 denticulations 

 on the curved exposed region, and a further 7-8 on the straight 

 basal region. 



The dental formula of the paragnaths, which are shown in 

 Fig 21, is :— 



I. One or two rather large conical denticles in a longitudina 1 



row, with, in some individuals, 2-3 small ones at their 

 side. 



II. An irregular rectangular patch of about 16 large 



denticles in three transverse rows. 



III. A transverse patch of large and small denticles in 

 three rows, the large ones in the second and third rows. 



IV. An obUquely rectangular patch of 16 rather large 

 denticles in two oblique rows (on the outer side of the 

 maxilla). 



V. Absent. 



VI. An irregular rounded group of 2-3 curved rows of 

 rather large denticles. The group lies further forward 

 than the rest of the proximal or buccal series. 



VII- ; VIII. Forms a band of numerous denticles, those 

 along the anterior margin (8-10 in number) larger than 

 the rest, which are quite small and more numerous, 

 and irregularly disposed in 2, 3 or 4 rows. The large 

 ones do not extend up to the group VI. 



