402 W. C. MSINTOSH ON THE ANNELIDA 
median line, and the outer part of the scales is tinted of a pale brownish hue. The 
bristle-bearing segments amount to eighty-seven ; and the feet are deeply cut. The body 
tapers from head to tail and terminates in the anus, on each side of which there is a short 
cirrus. The head is small, and covered by the first pair of scales. Eyes four, somewhat 
indistinct; two placed near the posterior border, and two (which are wider apart than the 
former) in front of the prominent lateral region. Tentacle absent ; but the base is of a 
dusky brown hue, thus causing the somewhat elevated divisions of the head next it to 
appearin relief. Antenne smooth. Palpi absent. Tentacular cirri long, filiform, and 
smooth. There is no trace of enlargement below the tips of any of these processes. 
The scales are almost all detached, so that it is difficult to determine them exactly ; 
but they appear to number about thirty pairs, the first occurring on the second segment 
and the last reaching the anal papilla; they are pellucid, smooth, iridescent, brownish 
organs, and under a high power are minutely granular, like the scales of certain fossil 
fishes. In the pigment-region, moreover, pentagonal or hexagonal spaces are formed 
with a clear point in the centre of each. A few clavate papille occur at intervals on 
the posterior surface and edge. From the surface of attachment various finely branched 
nerves (?) proceed to the circumference. The first pair seemed to be large; but several 
loose scales exceeded them, so that a regular diminution from head to tail may not 
hold. ; 
Each foot, when viewed from the dorsum, is bifid, having a long pointed papilla in 
front, and one less acute posteriorly. The same appearance is noticed from the ventral 
surface, the bristles emerging between the papille. The dorsal cirrus arises near the 
base superiorly, and is a smooth tapering process extending to the tip of the bristles. 
The inferior cirrus springs about the middle of the foot, reaches a little beyond the 
angle of the fork, is filiform, tapering, and smooth. Between this and the process at the 
base of the foot there isa line of clavate papille. Viewed laterally the foot is pointed from 
below upward, a slight curve only existing at the dorsal edge; the tip seems to be fur- 
nished with whitish pigment along the border of the papillz. The dorsal division is repre- 
sented only bya spine, the blunt point of which projects asa prominent process covered 
with cutaneous tissues to the exterior of the dorsal cirrus. The ventral branch has a 
vertical series of dull yellowish bristles projecting between the pointed papille of the 
feet. The superior group (Pl. LX XII. fig. 7) have long tapering tips ending in a slight 
mucro or thickening of the point. The portion beneath is scaly rather than spinous, from 
a series of sheath-like processes, which, in the position of the specimen figured, are seen 
somewhat on their edge ; they form the usual alternate double rows; and their arrange- 
ment often gives the bristle the aspect of a diminishing rod with a spiral band. ‘The 
inferior series, often separated by an interval, commences with bristles having the type 
of the former, but with shorter tips, terminated by a slightly curved hook; and the 
bifid nature soon becomes developed in the others (Pl. LXXII. fig. 8). The large 
scale-like processes stand out prominently; but it is difficult to represent these satisfac- 
