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64
Adambulacralpladerne bære 3 Pigge (Hovedformen
bærer 6 Pigge); forresten er Skeletbygningen ens.
Yi have været i Tvivl om, hvorvidt vi skulle opføre
denne Søstjerne som en særegen Art eller som en stærkt
udpræget Varietet af den foregaaende; men ihvorvel den
adskiller sig fra denne i flere væsentlige Punkter, have vi
dog ladet den staa som en til en ny Art sig oparbeidende
Varietet.
Parven.
Ryggen mørk gulrød med gule Flækker.
Madreporpladen straagul, ligesaa Anus, Tab. XV, Fig. 3. Bugen
smuk gul. Paa Spidsen af Armene et orangerødt Øie.
Findested.
Station 164, 1 Exempl. 338, 2 Exempl., hvoraf 1
lidet. 363, 2 større og 1 mindre Exemplar.
TJdmaalinger af 3 Exemplarer.
No. 1. Hele Gjennemsnittet . . 51rain.
Høiden.......10mm.
Store Radius.....28m"1.
Lille do.....13—14mm.
No. 2. Hele Gjennemsnittet . . 40mm.
Høiden.......llmm.
Store Radius.....21mm.
Lille do......10mn.
No. 3. Hele Gjennemsnittet . . 25mffl.
Høiden.......6.5mm.
Store Radius.....13mm.
Lille do......6.75mm.
Tylaster Willei, n. g. & sp.
Tab. XI, Fig. 1—0. Tab. XV, Fig. 4. 5.
1880. Tylaster Willei, Koren & Danielssen. Nyt Mag.
for Nat. Christiania, 26de B. pag. 186. Tab.
I et II, fig. 1—5.
Denne mærkelige Søstjerne maa henføres til den af
Professor Perrier opstillede Familie Asterinidæ, hvortil Dr.
Viguier fornylig vistnok med Rette henfører Slægterne:
Pateria, Gray; Asterina, Nardo; Palmipes, Linck; Disaste-
The adambulacral piates carry 3 spines (the normal
form carries 6 spines), but otherwise, the construction of
the skeleton is similar to that of the normal form.
We have been in doubt, whither we ought to
classify this starfish as a particular species, or, as a strongly
marked variety of the previously described one, but,
although it differs from that one, in several important points,
we have allowed it to stand as a variety evolving towards
a new species.
Colour.
The abactinal surface is dark orange, with yellow
patches. The madreporite is straw-coloured, and the anus
is of a similar colour (Pl. XV, fig. 3). The actinal
surface is a beautiful yellow. There is a dark orange coloured
eye seated at the tip of the rays.
Habitat.
Station No. 164. One specimen.
— „ 338. Two specimens, of which, one was
a small one,
— „ 363. Two large and one small specimen.
Dimensions of 3 specimens.
No. 1. Total diameter of the starfish 57""".
Thickness 10""".
Length of the brachial radius 28mm.
Length of the disk radius 13—14mffl.
No. 2. Total diameter of the starfish 40mm.
Thickness 11""".
Length of the brachial radius 2lmm.
Length of the disk radius 10mm.
No. 3. Total diameter of the starfish 25mm.
Thickness 6.5mm.
Length of the brachial radius 13mm.
Length of the disk radius 6.75T.
Tylaster willei, n. g. and sp.
PI. XI, figs. 1— fl. PI. XV, figs. 4. r».
1880. Tylaster Willei, Koren and Danielssen. Nyt Mag.
for Nat., Christiania, 26de B., pag. 186. Tab.
I et II, figs. 1—5.
This remarkable starfish must be assigned to the
family of Asterinidæ, established by Professor Perrier, and
to which Dr. Viguier, has lately, and no doubt with
reason assigned the genera; Pateria, Gray; Asterina, Nardo;
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