OBTAINED DURING THE CRUISE OF H.M.S. 'VALOROUS.' 507 



in the fragment. The first segment bears only the dorsal and ventral bristle-tufts; 

 the second has, in addition, a dorsal cirrus ; while the fourth possesses a well-marked 

 branchial process. The branchiae remain of considerable size (i. e. nearly meet in the 

 middle of the dorsum) for about eight segments, and then diminish to the fifteenth, in which 

 they are very minute. The bristles are simple striated structures, with a slight wing, as in 

 S. cirrata ; and they increase in length so as to project outward and backward at the pos- 

 terior part of the fragment. In transverse section (PI. LXV. fig. 14) the body-wall presents 

 (at the end of the fragment) an ovoid outline. The cuticle is well marked, and the hypo- 

 derm thick, especially along the entire ventral surface. The dorsal longitudinal muscles 

 are considerably less than the ventral, and a large gap occurs in the median raphe. 

 The ventral longitudinal muscles are separated by a central interval, at the bottom of 

 which the nerves lie. The oblique muscles pass over to the raphe at the summit of the 

 latter. The circular muscular coat is not much developed, but the lateral vertical bands 

 supplement it. The alimentary canal is rounded, has a thick circular muscular coat, 

 and the glandular inner surface is richly ciliated. 



Peionospio Steenstrttpi, Malmgren. Fragmentary examples from Stations 3 & 16. 

 The stout anterior bristles show peculiar dotted markings, which are also present in the 

 short and curved inferior bristles of the median segments. The hooks have more than 

 one tooth above the great process. 



Cirrathlus cirbatus, 0. P. Miiller. Holsteinborg Harbour, 30 fathoms. 



Capitella capitata, Pabr. Station 3, 20 fathoms. An injured fragment of a small 

 example. 



Maldane biceps, Sars. A single injured fragment in 175 fathoms, off Hare 

 Island, Disco (Station 1). 



Maldane Sarsi, Malmgren. Holsteinborg Harbour, 30 fathoms. Fragment. 



Rodine Loveni, Malmgren. Holsteinborg Harbour, 30 fathoms. A fragment in a 

 tube sparsely coated with clear quartzose sand-particles and rather brittle. 



Nicomache ltjmbpicalis, Pabr. Station 1, 175 fathoms, off Hare Island, Disco. The 

 size, like that of the Canadian examples, is large. The tubes are composed of sand or 

 sandy mud. 



Axiothea catenata, Malmgren. Godhavn Harbour, 5-20 fathoms ; and a fragment 

 from Station 1. Tubes composed of sandy mud. 



Pkaxilla arctica, Malmgren. Station 7, 1100 fathoms, in mud. The species is 

 smaller than P. prcetermissa, and the hooks agree with those figured from a Zetlandic 

 example in Trans. Roy. Soc. Pdinb. xxv. pi. xvi. fig. 13. The tubes are composed of 

 very fine sand, and have a hyaline inner coat. 



Owenia pllifoFvMis, D. Ch. Station 5, 60 fathoms ; Station 16, 1785 fathoms ; out- 

 side Godhavn Harbour, 80 fathoms. The tubes at the latter station closely resemble 

 the stalks of Alcijonidium, growing in proximity, while a fragment from 1785 fathoms 

 has a tube composed of Globigerincs united by the tough secretion. 



Cistenides granulata, L. Holsteinborg Harbour, 10 fathoms ; Godhavn Harbour, 

 5-20 fathoms. The tubes offer a noteworthy character, since they are in most cases con- 



