292 MOLLUSCA. 
Antmat elongated, everywhere closely covered with large rounded 
papille of a deep beryl-green colour, shaded in the interstices with 
amethystine: the same colouring is found below, except the foot, 
which is a slaty violet, half the width of body. Body attenuated, ap- 
parently somewhat cylindrical, equally and acutely rounded at both 
ends. ‘Tentacles dark blue. 
Length nearly an inch and a half; breadth three-fifths of an inch. 
Inhabits the Feejee Islands. 
A fine species, having a mulberry-like surface, and also remarkable 
for its unusually dark colours, the general colour being of an ame- 
thystine blue, somewhat darker than the rounded papille. 
Figures 384, 384 a, dorsal and ventral view of the animal. 
PERONIA MARGINATA, (Couthouy MS.) 
Corpus elongato-ovatum, convexum, nigro-virescens, papillis minutis nu- 
merosis ornatum, ad marginem nigro-fasciatum ; caput latum, biloba- 
tum, protensum, flavescens ; tentaculis nigricantibus clavatis ; pagina 
inferior flavida. 
Elongated ovate, narrowed anteriorly; back very convex, deep 
greenish-black, very thickly covered with minute tubercles; margin 
ornamented with alternate bars of black and white; head _ broad, 
bilobed in front, and projecting considerably beyond the mantle 
when the animal is in motion, of a pale yellow colour, tinted bluish 
about the mouth; tentacles rather long, and bulbous at the extremity, 
pale slate-colour, except at the tips, which are black ; under side of the 
mantle pale yellowish near the foot, becoming greenish at the margin, 
where it shows alternate bands of green and pale yellow. Foot pale 
ochreous, to which a bluish tinge is imparted by the viscera. 
Length three-fifths of an inch. 
This little species was very common under stones at low water, 
near the mouth of Orange Harbour, usually in groups of perhaps 
