GASTEROPODA. 291 
PERONIA IRRORATA (Could). 
Corpus elongato-ovale, convexum, flavo et olivaceo nubeculatum, granults 
confertis instructum, marginibus dilatatis, plicis radiantibus ad decem 
quasi denticulatis: caput protractum, lateraliter dilatatum, ceruleum ; 
tentaculis curtis, gracilibus, capitatis, ceruleis: solea trientem latitu- 
dinis corporis adequans. 
Elongated oval, back arched, margins expanded, mottled olive and 
yellow, finely covered with minute, subequal granulations, with eight 
or ten elevated, radiating folds or ridges at the margin on each side, 
which extend a little beyond the margin, and give it a dentate appear- 
ance ; head scarcely protruding beyond the body, dilated at the exterior 
angles; tentacles short, slender, blue, knobbed, and with an eye-spot 
at the tip; head above pale sky-blue, and also the mantle surrounding 
the foot; margin beneath ochreous, foot a little more than one-third 
the width of the body. 
Length one inch; breadth half an inch; height one-fourth of an 
inch. 
Found in tide-pools at low water, Bay of Islands, New Zealand. 
Drayton. 
This species may be compared with P. patelloidea, which is also 
from New Zealand; but if the figure is to be relied on, it is certainly 
different, the colour, form, number of marginal projections, &c., being 
all different. 
Figures 383, 383 a, dorsal and ventral views of the animal; 383 0, 
frontal view. 
Peronia actnosa (Gould). 
Corpus elongatum, sub-cylindraceum, posticé angustatum, ad extremt- 
tates rotundatum, papillis beryllinis ornatum ; solea dimidiam latitu- 
dinis corporis adequans, fusco-violacea ; tentacule cyanee. 
