106 Prof. M'ln tosh's Notes from the 



cephalic segment *. The median ridge on the dorsum runs 

 smoothly into the general surface posteriorly, and the aspect 

 of the parts varies according as the lateral flaps are erect or 

 flattened. The lobe is comparatively short, and is marked 

 inferiorly by the commencement of a median ridge, wliich is 

 continued along the body to the margin of the anal funnel. 

 The separation between it and the succeeding segment is only 

 slightly indicated. The second segment is about a third 

 longer than the cephalic lobe, and bears, about a fifth behind 

 the anterior border, a small tuft of bristles and three hooks, 

 the crowns of which are less elaborately formed than the 

 same organs posteriorly. The third segment is still more 

 elongated, and like some of the segments which follow is dis- 

 tinguished by an anterior whitish region, the bristles and hooks 

 being at the posterior border of the latter, viz. about the 

 anterior fourth of the segment. The two succeeding seg- 

 ments are similar, but the sixth and seventh are somewhat 

 shorter and thicker — all, however, in the preparation showing 

 the free fold of the anterior border, which in a manner en- 

 sheaths the posterior end of tlie preceding segment. The 

 eighth has also the free and densely white anterior margin 

 intensified by the dark hue of the region behind, and the 

 bristles and hooks are similarly placed. Posteriorly a change 

 in the arrangement of the segment-junction occurs, since the 

 densely whitish region of the ninth segment passes slightly 

 forward on it ventrally, so that the free margin so cha- 

 racteristic of the preceding segments is lost. The anterior 

 border of this curved white region, however, really marks the 

 segment-junction, though in the specimen from Jersey the 

 arrangement is not so distinct as in the others, probably from 

 the less perfect preservation. The bristles and hooks of the 

 short ninth segment are situated posteriorly, and thus a 

 change in the position of the organs is inaugurated. The 

 segment-junctions are clearly behind this and all the remain- 

 ing bristle-tufts, that is, from the tenth (inclusive) to the 

 twenty-third, the last five or six segments being considerably 

 elongated. The bristle-bundles and rows of hooks in this 

 division of the body are conspicuous, and placed a little in 

 front of each junction. The anal division (Plate VIII. fig. 4) 

 appears to be composed of six segments, four of these (24th, 

 25th, 26th, and 27th) having slight elevations or papillae to 

 indicate the position of the bristle-tufts and hooks of the other 

 segments, which are here absent. The terminal rim is not 



* " Ueb, einige canarische Anneliden," Nova Acta Acad. Oses. Leop.- 

 Car. Bd. xlii. No. 3, p. 116, figs, 21 a &c. 



