30 
33. Doris MARGINATA. 
Elongate, smooth and convexly rounded above. Mantle somewhat 
dilated and rounded in front, acuminately rounded behind. Mar- 
gins thin. Branchial plumes seven, small, erect, pinnate, and re- 
tractile into a common simple cavity. Dorsal tentacles elongate- 
ovate, peduncles long, obliquely lamellated, and retractile into sim- 
ple cavities. Labial tentacles small and conical. Foot narrow, 
elongate, bluntly rounded and widest in front, tapering to a poiat 
behind and projecting far beyond the posterior end of the mantle. 
Colour white ; mantle edged with light red and an intramarginal 
tinge of yellow. 
The above species is quite active, and while creeping, the tentacles 
are inclined forward and laterally. When placed in a basin of water, 
they suspended themselves from the surface, back downwards. 
34. Doris PAPILLOSA. 
Oval, rigid, rounded alike at both ends, convexly rounded above. 
Mantle entirely concealing the foot, widest in the middle, upper 
surface covered with small papille, not very crowded, and of various 
sizes. Foot oval, rounded at both ends. Colour greyish. Dorsal 
region livid. Beneath the mantle orange. Foot pale grey. 
Length 8 lines. 
Tentacles and branchize undetermined. 
35. Doris ALBOPUSTULOSA. 
When at rest, of an oblongo-ovate form, soft. Mantle rounded 
at both extremities, edges thin and undulated, and concealing the 
foot; the upper surface is covered with white depressed, irregu- 
lar-shaped and unequal-sized pustules, which do not quite reach 
the margins. Branchial plumes six, rather small, erect, incurved, 
pinnate, surrounding the vent and retractile into a common rimate 
cavity. Dorsal tentacles somewhat large, oblong-ovate, coarsely and 
obliquely lamellate, and retractile into rimate cavities. Head is 
prominent, convex in front, and furnished with cylindrically taper- 
ing labial appendages. Foot, when in motion, elongate, narrow, 
aud rounded at both ends. Colour above lemon-yellow, pustules 
white, and the margins of the mantle edged with purple. Dorsal 
tentacles reddish-brown, with white lamellee. Branchize white. Foot 
and beneath the mantle white. 
Length 1 inch. 
36. Doris GRANDIFLORA. 
Oblongo-ovate, similarly rounded at both extremities, convex above, 
and of a soft texture. Mantle widest in the middle, not com 
cealing the foot, thin and crisped along its margins. Upper sur- 
face strongly rugose, and covered with irregular-sized, prominent, 
rounded tubercles. Branchiz very large, procumbent, arborescent, 
five in number, inserted far back, encircling the vent and retractile 
