66 
THE VOYAGE OF H.M.S. CHALLENGEE. 
Lepidonotus wahlbergi, Kinberg (PL XL fig. 1; PL XVIII. fig. 8; PL Xa. figs. 15, 16). 
Lepidonotus ivahlhergi, Kinberg, Freg. Eugen. Eesa, &c., p. 12, Tab. iv. fig. 14. 
Habitat. — Found between tide-marks at Sea Point, near Cape Town, along with Tere- 
bella, Sabella, and Sabellayda. 
This is a stout, stiff Lepidonotus. A large male specimen measures 36 mm. in length 
and 9 mm. in breadth, a size considerably exceeding that of Kinberg’s examples. 
The head has the usual aspect in Lepidonotus, the bases of the antennae being rather 
more elevated than the base of the tentacle, the head in short being continued into the 
former. Two rather small eyes are situated at the posterior border, and are some- 
times overlapped by the jugal fold ; while two occur on the lateral prominence in 
front. The tentacle is somewhat longer than the palpi, and is characteristically dilated 
at the tip, which has a filiform termination. A band of dark pigment occurs near the 
base, and a narrow belt below the dilated tip. The antennae arise from bases which have 
an hour-glass contraction and are epitomes of the tentacle. The cirri are like the fore- 
going in colour, the belt of dark pigment at the tip being especially conspicuous. All 
these organs are smooth. The brownish palpi taper gently from the base almost to the 
apex, at which a filiform termination appears in the preparation. In some a slight 
dilatation occurs below the tip. They are not smooth, as Kinberg says, but densely 
papillose. The long granular papillae have a filiform terminal process. The ventral cirri 
are short, and in the preparation taper very little. They have a short filiform tip, which 
does not reach the base of the bristles. The ventral papilla is well formed, and in the 
female somewhat tulip-shaped, with about four lobes round the central cavity at the 
tip. The pigment at the base is streaked longitudinally, probably from the fluted 
condition of the process. Moreover, the papillae are longer in the males than in the 
females, a feature best seen posteriorly. 
The first pair of scales are rounded, of a whitish colour, and touch in the middle line. 
They are densely covered all over with prominent chitinous spines. The second pair have 
the anterior half whitish, the posterior blackish, with the exception of the pale area of 
attachment. The shape is more elongated, and the chitinous spines less prominent than 
in the first. The rest of the scales are variously mottled with blackish pigment, the area 
of attachment being whitish. The spines on the third pair are less prominent, and are 
evidently assuming the tubercular condition characteristic of the other scales. The outer 
margin is generally wrinkled and folded upward. The second pair of scales merely 
touch. The others for the most part leave a portion of the dorsum bare, or, as posteriorly, 
perhaps only touch at one point. The scales in section are dense. The upper and lower 
surfaces are chitinous, and the intermediate layer is narrow and firm, densely fibrous, and 
with brownish pigment where it adjoins the other layers. The dorsal surface is covered 
