596 W. C. MSINTOSH ON THE ANNELIDA 
The body is somewhat elongated for a typical example of the group. Most of the 
specimens retain traces of colour, the dorsal cirrus being brownish purple; and some 
have a brownish median line on the dorsum, and a band of the same hue at the anterior 
part of each segment. The dorsal edge of the caruncle is likewise deep purplish. 
The caruncle extends to the posterior border of the fourth segment. The tentacle is 
much longer than the antenne; and the latter, again, are longer than the buccal 
processes (tentacles of M. de Quatrefages). The branchie are bipinnate, commence at 
the 4th body-segment, and terminate on the last. The tail has two blunt styles. 
The dorsal fascicle springs to the exterior of the branchie in each foot, and consists of 
a brittle series of radiating bristles (Pl. LXXI. fig. 2) with serrated tips. The dorsal 
cirrus takes its origin from the same papilla. The ventral division is furnished with a 
fan-shaped tuft of bristles, which are more slender and elongated in the centre of the 
bundle. The bifid tips of the bristles diminish from above downward. The upper 
series (Pl. LX XI. fig. 3) have a large process beyond the fork, while the lower (fig. 4) 
have a shorter. The ventral cirrus is pale in the preparations, and comes from the 
posterior and inferior edge of the bristle-papilla. It is about the same length as the 
dorsal; and both continue to the last segment. Air readily passes into the central cavity 
of the dorsal bristles; and, in common with the others, they have a minutely granular 
appearance under the microscope. Acetic acid demonstrates a considerable amount of 
calcareous matter in their composition, a flexible translucent chitine remaining, while 
the dorsal bristles lose their serrations. Some of the bristles show fine transverse 
lines, which even notch the edge—a feature more conspicuous after the addition of 
the acid. 
APHRODITID. 
The representatives of the Aphroditide are three, viz.:—Aphrodita aculeata, L., 
young examples of which occurred in 690 and 257 fathoms on Stations Nos. 3 & 8 on the 
Channel slope in 1870, and in 90 fathoms off the west coast of Ireland in 1869 ; Letmonice 
Jilicornis, Kbg., off Rockall in 164 fathoms, and in 358 fathoms on the Channel slope; 
and Hermione hystrix, Say., in 40-80 fathoms off Algiers in 1870. 
POLYNOID. 
Lepidonotus squamatus, L., was dredged in 30-40 fathoms on stony and muddy 
ground off Dingle Bay, Ireland, in 1869, and Hwnoa nodosa, Sars, in 690 fathoms on 
the Channel slope in 1870. 
Eunoa HISPANICA, n.s. Dredged in 539 fathoms in the Atlantic (Channel slope) 
1870. The single specimen is fragmentary and without scales. ‘There isa pale purplish 
hue along the dorsal and ventral surfaces. The eyes are remarkably large; indeed the 
pairs almost touch each other; and, from the whitish centre in the spirit-preparation, 
each appears to have a lens—a feature, however, probably due to the opacity of the trans- 
lucent covering. The palpiare smooth. The inferior cirrus is long, slender, and smooth, 
