ee, 
27 
Branchial plumes small, six, tripimnate, arborescent, retractile, and 
surrounding the excretory orifice. [Dorsal tentacles were concealed. | 
Mouth proboscidiform, vertical, and placed between the foot and the 
mantle. Oral tentacles very small. Foot elliptically oval, truncated 
in front. Colour above dark red, with a few large clusters of white 
freckles. Foot rich orange-red. 
Length 24 inches; breadth 1} inch, 
25. Doris ECHINATA. 
. Form oblongo-ovate, rigid, scabrous, rounded above. Mantle small, 
rounded in front, acuminately rounded behind, not covering foot at 
the posterior half. The whole dorsal region covered with spinose 
globular granules. The branchial plumes inserted at the poste- 
rior tip of the mantle, five, arborescent, tripinnate, procumbent pos- 
teriorly, encircling the vent and retractile into a common cavity. 
Dorsal tentacles large, ovate, obtusely mucronate, obliquely and 
coarsely laminated, stoutly pedunculate, and retractile into tubular 
cavities. Labial tentacles small and cylindrically tapering. Foot 
large, oblong, bluntly rounded in front, which is the widest por- 
tion, gradually tapering behind to a tip, which is rudely crenulated. 
Colour light greyish-brown, much paler beneath ; a few brown dots 
along posterior edge of the mantle. 
This remarkable species was taken on a bed of sea-weed, and, like 
all the rigid species, is of a sluggish nature. During locomotion the 
posterior end and sides of the foot are exposed. Dorsal tentacles 
nearly erect, and the branchiz protruding posteriorly. 
26. Doris SCABRIUSCULA. 
Form oblongo-ovate, rigid, scabrous and convexly rounded above. 
Mantle, which entirely conceals the foot, rounded at both ends, 
widest in the middle, and the upper surface covered with mammillated 
conical tubercles, which decrease in size towards the margins, and 
are united by elevated net-like reticulations. Branchial plumes 
placed far back, of moderate size, suberect, six in number, arbores- 
cent, tripinnate and retractile into a common simple cavity. Dorsal 
tentacles oblongo-ovate, acute, rudely lamellated obliquely, and re- 
tractile into simple cavities. Labial tentacles small and lobed. Foot 
oval, elongate, and rounded at both ends. Colour above greyish- 
olive, with three longitudinal series of dusky spots; dorsal tubercles 
and reticulations whitish. Dorsal tentacles pale, with dusky lamella. 
Branchiz dusky ash. Disk of foot whitish, with a pale yellowish 
tinge. 
Length 1 inch 4 lines. 
27. Doris PILOSA. 
Form oblongo-ovate, rigid. convexly rounded above and pilose. Man- 
tle rounded at both ends, concealing the foot ; margins ciliated, with 
small tentacular processes, and the whole upper surface covered with 
similar appendages, which gives it a pilose appearance. Branchial 
