inhabiting the coralline region (or region of flexible zoophytes) is not very far inferior.
Beyond this region the Nudibranchs to be met with are few, and chiefly belong to the genera
Tritonia and Idalia. Several species are common to the littoral and coralline zones, but only
one, Doto coronata, has yet been found to inhabit all the three regions. Nearly all the JDoridida
{Idalia excepted) are littoral, a very few only reaching to the coralline zone. The Bolides are
pretty nearly divided between the two.
NUMBER OF SPECIES IN EACH GENUS.
Doris 21
Goniodoris . 2
Triopa . 1
iEgirus 1
Thecacera 3
Polycera 3
Ancula 1
Idalia
Tritoniadas.
6
Tritonia 4
Scyllsea
E olididje.
1
Lomanotus . 2
Dendronotus 1
Doto 3
Eolis 41
Erubletonia . 3
Fiona . 1
Hermsea 2
Alderia 1
Proctonotus . 1
Antiopa 2
38
57
100
GEOGRAPHICAL DISTRIBUTION.
N.E. "W. s. s.
Doris tuberculata . . . . X X X Eolis glauca . . . . . . X X
flammea . • X. Alderi . . . . . X
Zetlandica . . . . X coronata . . . X X X
raillegrana . . . . X Drummondi . . . . X X X
planata. • X punctata . . ■ X
Johns toni . . . . X X X elegans . . . . . x
coccinca . X rufibranchialis X x
repanda . . . . X X lineata . . . . X
aspera . . . . . WM ? smaragdina . . . . X
proxima . . . . X gracilis . . . . . X X
muricata . . . ^IsS X pellucida . . . . X
Ulidiana . . . . X Landsburgii . . . . X X
diaphana . . . . X a l b a .................................... X X X
oblonga . . . . X carnea . . . . .
bilamellata . . . . X X X Glaucoides . . . . X
depressa . . . . . X X X Peachii . . . . . K X
inconspicua . . . . X n a n a .................................... X
pusilla . . . . . X X stipata . . . . X
sparsa . . . . . X angulata X
pilosa . X X X inornata X
subquadrata . . . . X X concinna X
Goniodoris nodosa . . . . X X X olivacea. . . . X X
castanea X X aurantiaca X X X
Triopa claviger . . . . X X X pustulata X
iEgirus punctilucens X X X Couchii. . X
Thecacera pennigera . . X amcena . . . . x
virescens X Northumbrica , ...X
capitata . . . . X - arenicola X
Polycera quadrilineata X X! X Glottensis X
ocellata . . . . X. X X viridis . . . . X X
Lessonii . . . . X X ? purpurascens. X
Ancula cristata . . . . X X X cingulata X
Idalia elegans . . . . X vittata . . . . X
Leachii . . . . ‘ .X’/fj X ccerulea . . . . X
aspersa . X X exigua . . . . X X X
insequalis . . . . x ' picta . . . . X Mf X
pulchella . . . . X tricolor . X !;§!<■• X
quadricornis. . . . X amethystina . X.,;
Tritonia Hombergii X X X Farrani. . . . . X X
alba . . . . . X despecta X X • x
plebeia . X X - X Embletonia pulchra X
lineata . . . . X minuta. X
Scyllsea pelagica X pallida. . x..f
Lomanotus marmoratus . X Fiona nobilis . . . . X
flavidus. X Hermsea bifida X X • X
Dendronotus arborescens X X X dendritica. X
Doto fragilis . . . . X X X 1 Alderia modesta X X
pinnatifida . . . . X i! Proctonotus mucroniferus X
coronata . X X X Antiopa cristata . ., X X
Eolis papillosa . . . . X X X hyalina X