REPORT ON THE ANNELIDA. 
399 
Nicomache, Malmgren. 
Nicomache capensis, n. sp. (PL XLVL fig. 4 ; PL XXIVa. figs. 18, 19 ; PL XXXVIIa. 
fig. 2). 
Habitat. — Collected between tide-marks at Sea Point, near Cape Town. 
A fragment consisting of about eight anterior segments, with a diameter of 2 mm. 
The general form and appearance of this species agree with those of Nicomache 
lambricalis, the differences in regard to the aspect of the dorsum of the snout being due 
to the state of the spirit and the degree of contraction. 
The single ventral spine in the first three bristled segments is perhaps a little more 
curved towards the tip than in Nicomache lumhricalis. A very decided difference exists 
in the spinous forms in the dorsal group of bristles (PL XXIVa. fig. 18), for they are 
comparatively short, and the spines very boldly marked. 
The ventral hooks, again (PL XXIVa. fig. 19), differ from those of Nicomache 
lumbricalis in having a more elevated crown furnished with more numerous teeth, five or 
six of these being visible above the great fang. The contour in front also diverges, a 
prominent process, separated by a well-marked interval from the fang, bearing the 
vibrissse. 
The somewhat coarse sand in the alimentary canal had many and varied sponge- 
spicules. Diatoms and Foraminifera were rare. 
In section the body-wall generally corresponds in structure with Nicomache 
lumhricalis, the longitudinal ventral muscles greatly exceeding the dorsal in size. The 
form of the nerve-area and the position of the neural carnal are similar. An evident 
distinction, however, is the attachment of the oblique muscles in the middle line 
(PL XXXVIIa. fig. 2) above the neural canal, whereas in Nicomache lumbricalis they 
remain separate, i.e., are fixed on each side of the neural canal. A large blood-vessel 
lies close to the inner border of each ventral muscle. 
Nicomache japonica, n. sp. (PL XLVL fig. 5 ; PL XXIVa. fig. 20). 
Habitat. — Dredged at Station 232 (south of Yedo, Japan), May 12, 1875 ; 
lat. 35° 11' N., long. 139° 28' E. ; depth, 345 fathoms; bottom temperature, 41°‘l; 
sea-bottom, green mud. 
The single example is about 70 mm. in length, and at its widest part has a diameter 
of 2 mm. 
In the general form of the head and anterior region this form also corresponds with 
Nicomache lumbricalis, but there are four segments anteriorl}y each with the single 
inferior spine, instead of three as in the common species. The only peculiarity is that 
