1877.| ANTHOBRANCHIATE NUDIBRANCHIATE MOLLUSCA. 255 
yellowish. Beneath, there is a small, unequal, dark freckling, with 
larger spots upon the foot, and especially upon the upper surface of 
its border; the ground-colour of the foot is yellowish. 
Length (in spirit) 32 millims., breadth 19. 
Hab. The Seychelles. 
In two of the specimens the mantle is broader, and the spots upon 
the under surface are larger on the mantle than on the foot ; in one 
of them the tubercles are smaller, more conical, or subclavate, and 
the rhinophores are more massive, the purple of the branchial mid- 
ribs is also more decided and not produced solely by a minute freck- 
ling ; in the other the foot is comparatively very small, and the 
lateral and posterior border of the mantle is widely expanded and 
fleshy. 
The mantle-spicules are rather small, spindle-shaped, and generally 
more ot less bent. 
Odontophore broad, with about 19 rows of numerous, strongly re- 
flected spines, none of them mesially placed. 
Doris LANUGINATA, sp. nov. (Plate XXIX. figs. 15-17.) 
Body ovate, rather convex. Mantle large, expanded all round, with 
a wavy irregularly crenate border; it is covered closely with 
numerous, small, soft, linear tubercles. Rhinophores clavate, short, 
thick, truncated at the apices, and with numerous fine lamellz ex- 
tending far down; they are retractile within large, wide, denticu- 
lated and tuberculated sheaths. Branchiz 5, short, broad, tripinnate, 
set deeply in a pallial cavity with raised denticulate margin; the 
short tubular anus is situated almost between the two posterior 
plumes. Oral tentacles flat, spatulate, and longitudinally grooved 
above. Foot oblong, rounded at both ends, with a deep transverse 
slit in front, the upper lamina divided, and with a short process in 
the middle; flattened, and with crenulate edge at the sides and pos- 
teriorly. 
Colour of the spirit specimen dirty greyish brown, mottled with 
darker, the dark shade prevailing over the upper surface, except on 
the more central dorsal area. Below, the tint is uniform and lighter, 
with the exception of a few dark-brown spots ; the upper surface of 
the border of the foot is freckled and sparsely spotted with dark 
brown. 
Length (in spirit) 33 millims., breadth 23, height 13. 
Hab. New Zealand. 
The mantle-spicules are small, short, and often a little bent. 
Doris COLLATATA, sp. nov. (Plate XXIX. figs. 25, 26.) 
Body elliptic, convex on the back. Mantle very large, soft, pro- 
duced into a thin, wavy, crenulate border, and covered with numerous, 
small, unequal, rounded tubercles; the under surface is subgranular. 
Rhinophores short, thick, clavate, rounded at the tips, with numerous 
fine laminze reaching down to the short pedicle, and retractile within 
wide cavities which have the margins produced and denticulated. 
Branchiz 8, tripinnate, the lateral ones longest ; the two most pos- 
