1877.]  ANTHOBRANCHIATE NUDIBRANCHIATE MOLLUSCA. 257 
set round the tubular anus in a circle interrupted in front as well as 
at the back; the produced margin of their cavity is covered with 
small tubercles and is crenulate. Oral tentacles in the form of small, 
conical, lateral tubercles, Foot small, oblong, transversely slit in 
front, and with the anterior lamina notched 3 gradually tapering and 
rounded behind. 
Colour (in spirit) semitransparent yellowish white, with the 
tubercles opaque. 
Length (in spirit) 32 millims., breadth 21, height 12, 
fab. Australian seas. 
The mantle-spicules are small, straight, and cylindrical. 
Doris RartPiuosa, sp. nov. (Plate XXIX. figs. 29, 30.)) 
General form elliptic-oblong, convex. Mantle ample, soft and 
membranous on the back, subcartilaginous on the sides, where it is 
thickened and a little expanded ; the border is irregularly and spa- 
ringly crenulate; the upper surface bears small, scattered, linear, soft 
papillz, which are tolerably numerous on the sides, but are fewer on 
the back and on the border; between the papillze are small, short, 
conical tubercles, becoming rounded on the border, and giving to the 
latter a granular appearance ; the inferior surface is smooth, Rhino- 
phores short,. broad, subclavate or conical, pointed, with the 
numerous small diagonal lamine reaching far down and extending 
between slight anterior and posterior ridges ; they are retractile into 
cavities with raised and denticulated margins. Branchie 6, short, 
wide, tripinnate, the main branches deeply divided. The anus is 
elongated, its base greatly enlarged and its orifice denticulated ; the 
common cavity has the border prominent and indistinctly lobate. 
Head large ; oral tentacles flat, semicrescentic in outline, and pointed 
forwards and inwards. Foot elongate, but not reaching to the 
posterior edge of the mantle, much narrower than the latter, trun- 
cated, transversely grooved, with the upper lamina widely notched 
in front, gradually acuminating to a rounded point behind. 
Colour of the spirit specimens light dirty brown above, thickly 
mottled with brownish black on the sides and around the border ; 
the branchize are light reddish brown ; underneath, the general tint 
is reddish brown, with a dark minute speckling on the head, on the 
anterior portion of the mantle, and on the sides of the foot, and with 
large irregular black blotches, running into one another, on the sides 
of the body, between the foot and the mantle. 
Length (in spirit) 64 millims., breadth 38, height 24, 
Hab, i 

The mantle-spicules are small, spindle-shaped, and slightly bent 
or curved. 
Doris MOLLIPUSTULATA, sp.nov. (Plate XXX. figs. 13, 14.) 
Body broadly ovate, gently convex, and very soft. Mantle large 
and pulpy, the border extended at the sides and gradually thinning 
to a subcrenulate edge ; it is covered above with Opaque, raised, un- 
equal, soft, pustular surfaces, each of which bears one or more tuber- 
Proc. Zoou. Soc.—1877, No. XVII. 17 
