REPORT 02^ THE ANNELIDA. 
493 
The bristle-tufts show one or two slender dorsal forms (PI. XXXa. fig. 7) with a 
serrated and just perceptible narrow wing, and a finely tapered tip ; also one or two 
inferior bristles T\dth a spathulate extremity (PI. XXXa. fig. 8) and a delicately tapered 
median process which is finely spinous. The spathulate expansion seems to be due to a 
modification of the wings. 
The hooks (PI. XXXa. fig. 9) differ from those of the preceding and other Sahellce 
in having no posterior prolongation of the base, in this respect resembling Laonome 
hroyeri and also from Claparede’s Laonome salmacidis} The crown is remarkably oblique 
and very long, the serrations above the great fang being minute. The neck is short, 
and the dorsal outline, after an incurvation, becomes convex opposite the basal 
enlaro;ement. 
Unfortunately the body-wall of this species was so soft that beyond the statement 
that it seemed to correspond in general structure Sabella pavoiiina little can be said. 
The form differs from Laonome hroyeri in the structure of the bristles and hooks, 
and in the presence of the pigment-specks at the anus. Kinberg^ describes another 
species from the Strait of Magellan. 
The Sabella fusco-tcenia, Grube (var. phceotcenia, Solander ?), from Ceylon, in the 
British Museum, has uncini (both anterior and posterior) approaching those of the group 
in shape, that is, each is devoid of the elongated posterior process. 
The Laonome japonica, Marenzeller,® from Southern Japan, differs from the Laonome 
hroyeri, Malmgren,^ and the present species in the shape of the hooks. They resemble 
those of the ordinary Sahellce. 
BrancJiiomma, Kblliker. 
Branchiomma vesiculosum, Montagu? (PI. XXXa. figs. 10-12). 
AmpMtrite vesiculosum, Montagu, Trans. Linn. Soc. Lond., vol. xi. p. 19, pi. v. fig. 1. 
LLabitat. — Dredged at Station 75 (off Fayal, Azores), July 2, 1873 ; lat. 38° 38' N., 
long. 28° 28' W.; depth, 50 to 90 fathoms; surface temperature, 70°'0; sea-bottom, 
volcanic mud. 
The total length is about 50 mm., of which the branchiae are 13 mm. The extreme 
diameter of the body anteriorly is about 6 mm. 
The body is more flattened than in Sabella, gradually tapered from before backward, 
and the segments are very distinctly marked. The dorsum shows no trace of a longi- 
tudinal furrow, but the ventral scutes from the tip of the tail forward to the second 
1 Annel. Chetop., p. 427, Tab. xxv. fig. 4. ^ Op. cit., 1866, p. 354. 
® Siidjapan. Annel., p. 16, Taf. iii. fig. 1. 
* Nordiska Hafs-Annulater {Ofversigt k. Vetensk.-Akad. Forliandl., 1865), p. 400, Tab. xxvii. fig. 85. 
