294 MOLLUSCA. 
stella branchiahs plumulis numerosis gracilibus crenulatis tri-sertah- 
bus ; pes latitudinem corporis sub-equans. 
Body elongated oval, coriaceous, covered with large verrucosities 
having numerous smaller ones irregularly disposed around them. 
Colour pale ochreous, clouded on the back with three or four irregular 
dark ferruginous blotches, and with two of the same on the sides; be- 
neath colourless. Head small; labial tentacles long and slender, verti- 
cally compressed somewhat; cervical tentacles short, ovoid, inserted 
into a short, tubular, truncated sheath, compressed and exhibiting 
nine or ten concentric lamine. Branchie composed of innumerable 
slender, pectinate plumules disposed around the anus in three series, 
the outer circle extending the width of the body, the plumules of the 
inner circle about half as long as those of the outer circle, and alter- 
nating with them. [J. P. c.] 
Length two and a half inches. 
Found among rocks exposed to the surf, at Villamar, near Valparaiso. 
The very remarkable circles of branchial organs are sufficiently 
characteristic of this species. 
Figure 387, lateral view of the animal; 357 <a, 387 0, lateral and 
front views of a tentacle in detail; 387 ¢, plumules in detail, 
Doris pLuMULATA, (Couthouy MS.) 
D. laté ovalis, straminea, minutissime granulata, D. luteole plerumque 
simillima : tentacule cervicales lanceolate, compresse@ : stella branchialis 
plumulis octo bipinnatis, pinnis nonis, pinnulis exilibus, ciliaribus. 
Anima subcylindrical, elongated, in most respects similar to D. 
luteola, but it is proportionally broader, the surface is more finely 
granulated, the head more elongated, the peduncle of the cervical ten- 
tacles is longer, and the club more pyramidal, the lamelle# more nume- 
rous and less obliquely disposed, and the sheath ciliate, at its edge. 
The branchial star is formed of eight plumules, having the inferior 
fourth of their peduncles united by a membrane; each plumule is a 
