REPOET ON THE ANNELIDA. 
425 
A small specimen measuring about 12 mm. in length by a little more than 1 mm. in 
diameter at its widest part anteriorly (exclusive of the bristle-tufts). The example is 
considerably injured, but exhibits the chief characters fairly. 
There are fourteen pairs of bristle-tufts in front, and twelve segments in the posterior 
region of the body furnished only with processes for the hooks. In this respect it 
agrees with Ampharete arctica, Malmgren. The Palmula comes nearest in appearance 
to the condition in Ampharete goesi, Malmgren, in regard to the structure of the paleolse, 
which are short and broad, with a tapering filiform tip (PI. XXVIa. fig. 20). It, how- 
ever, quite differs from the latter species, which has seventeen posterior papillae for the 
hooks. The paleolse form a beautiful fan in front. In regard to the structure of the 
extremity of these organs, it is interesting that no form having a mucronate tip (as 
figured by Malmgren in Amp)harete arctica) has yet been observed. 
The branchiae are four on each side and of the usual length and structure, except 
that their bases are united. 
The bristles in each tuft consist of a longer series with wings, and a shorter 
and somewhat stouter group of the same structure, the attenuated extremities of 
which commonly reach the inferior margin of the wings of the longer kind. The 
arrangement thus differs from that in Ampharete gracilis from St. Andrews and other 
parts in which the intermediate shorter forms are very slender and devoid of an evident 
wing. 
The uncini present six or seven teeth (PI. XXVIa. fig. 21), according as the distal 
one is visible or not, and exhibit the following features when compared with other species. 
They do not show so many teeth as the hooks of Ampharete grubei, and the last tooth 
(anteriorly and inferiorly) is larger. They are broader than those of Amp>harete goesi, 
and present the same distinction inferiorly, viz., the projection of the last fang beyond 
the comparatively small mucronate process, both from this form and Ampharete arctica. 
They appear to have more numerous teeth than in Ampharete gracilis, and besides differ 
in the contour inferiorly and anteriorly, as just noted in regard to the other species. On 
the whole they are comparatively short and broad. 
The anus presents a crenate or papillose margin, with a short cirrus at each side. 
The contents of the alimentary canal consisted of a fine greyish mud in which 
fragments of sponge-spicules and a few minute Foraminifera {Glohigerince) occurred. 
In section the cuticle is distinct, and the increase of the hypoderm along the ventral 
arch is great. The circular muscular coat is well marked. The longitudinal ventral 
form long and massive muscles separated by a considerable median interval, bounded on 
each side by the strong oblique muscles. The dorsal are much less. They excend from 
the bristle-bundles to the middle line. The nerve-cords, as in Amphicteis, lie outside the 
circular muscular coat, but protected by the thick hypoderm. The specimen is too soft 
for further minute description. 
(ZOOL. CHALL. EXP. PART XXXIV. 1885.) 
LI 54 
