1869.] DR. W. BAIRD ON NEW ANNELIDES. 311 
striated round the external margin, and studded with granules in- 
ternally, at the bottom of the cup. Both suckers are plaited on 
the margins. Each segment from the commencement of the body 
to within four of the posterior sucker is furnished on each side with 
a large foliaceous appendage, which is sessile, simple on the margin, 
but puckered and sinuated like the leaf of the endive. 
The only specimen the British Museum possesses is of a uniform 
very dark colour, the edges of the posterior sucker excepted, which 
are much lighter. 
Length about 14 inch, breadth (of body) 4 or 5 lines*. 
The habitat is unknown. The specimen was added to the Museum 
collection by the late Mr. H. Cuming. , 
2. BRANCHELLION LINEARE, Baird. 
Body linear-elongate, flattened, distinctly annulated. Segments 
of body about 32, those of neck not so distinct as those on the body, 
and about 10 or 12 in number. The neck is separated from the 
body by a well-marked constriction, but is nearly equal in diameter 
to the body. The oral disk is cireular and smooth, or only finely 
striated interiorly. The ventral is considerably larger, circular, and 
densely granulated within the cup. The disks are slightly excentral. 
Branchiform lateral appendages simple, not puckered on the margin. 
Length about 6 lines, breadth about 1 line. 
This species was taken from a species of Mustelus in King George’s 
Sound, N. Australia, by Mr. Rayner, Surgeon to H.M.S. ‘ Herald.’ 
3. BRANCHELLION PUNCTATUM, Baird. 
Body narrow, elongate, nearly flat on both ventral and dorsal 
surfaces, distinctly annulated. Segments somewhat striated on their 
backs, those of the body about 32 in number. Neck indistinctly 
annulated. Ventral surface light-coloured; dorsal dark, with nu- 
merous small, round, yellow spots scattered over the surface. The 
oral sucker is much smaller than the ventral, the margin thickened, 
and the cup is minutely granulated interiorly. Ventral sucker large, 
quite terminal, shallow, and with larger granulations on its interior 
surface. Branchiform appendages larger on the posterior portion 
of the body, simple, not puckered on the margin. 
Length of largest specimen nearly 13 inch, breadth about 2 lines. 
The only specimen we possess in the British Museum collection 
was taken from a species of My/iobates caught in King George’s 
Sound, N. Australia, by Mr. Rayner, Surgeon of H.M.S. ‘Herald.’ 
Genus EvBRANCHELLA, Baird. 
Margins of body furnished with linear, pinnated, instead of broad, 
foliaceous, appendages, much more resembling true branchiz than 
those in Branchellion. Neck separated from the body. Head smail, 
leech-like. 
* The species described in this paper are all preserved in spirits; and being 
more or less corrugated by the spirit, the dimensions are only approximative. 
