GASTEROPODA. 297 
disposed, rose-red blotches, like petechi. Cervical tentacles tapering, 
vermilion-coloured, with only a minute portion laminated. Branchial 
star of six narrow, tapering, pinnate plumules. Head very small; 
labial tentacles short, conical; foot narrow, shorter than the body ; be- 
neath colourless, the mantle and foot bordered with pale orange. 
Length two and a half inches; breadth an inch and a quarter. 
Obtained at Honolulu, Oahu, Sandwich Islands. 
The drawing of this species is somewhat imperfect; yet its charac- 
ters are sufficiently obvious for its identification. 
Figures 391, 391 a, dorsal and ventral views of the animal. 
Doris Liactna (Gould ). 
D. magna, elongata, lateribus anticé dilatatis retrorsum angustata, lila- 
cina macults saturatioribus notata, granulata: caput parvum: tenta- 
cule cervicales clavate, reflexe: stella branchialis magna; plumulis 
sex trifoliatis, foliolis profunde sinuatis. 
Animal rather large, somewhat prismatic, much elongated, obtuse 
in front, rather tapering behind. Colour lilac, tinted roseate along the 
middle, and mottled with rather large darker spots; there is an angular 
dilatation at the sides opposite the tentacles; behind these a broad. 
raffied, and ochreous margin ; cervical tentacles small, ochreous, club- 
shaped, reflexed, lamellar. Branchial star seated very far back, very 
large, wider than the body, composed of six large, trifoliate plumules, 
each of the folioles deeply and perhaps doubly sinuate ; margin yellow. 
Beneath yellowish, shaded and finely spotted with lilac; foot as long 
as the body and two-thirds as wide, rounded at tip, anterior angles 
not dilated ; head small, rounded, placed deep beneath the hood. 
Length three and one-third inches; breadth an inch and a quarter. 
Obtained at Honolulu, Oahu, Sandwich Islands. 
Remarkable for the angular dilatations at the neck, like a trilobite; and 
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