imellem Armvinkelen og Analaabningen, kun fjernet 5”” 
fra denne, Fig. 8, 9. 
Saavel Ryg- som Bugfladen er besat med yderst fine, 
noget spredte Pigge, der kun kan iagttages med en stærk 
Loupe, Fig. 12. Paa Rygsiden, hvor de afbrydes af en 
Mængde større og mindre Grupper Tentakelporer, ere de 
mindre end paa Bugfladen, hvor der sees flere fine, paa- 
langs gaaende Furer, Fig. 10. 11. 
De 5 Arme ere temmelig flade, brede ved Basis; 
henimod deres noget afstumpede Spids blive Tentakelporerne 
yderst sparsomme, imedens Piggene her staa tættere sammen. 
Bugfuren er smal, forsynet med 2 Rækker Fodder 
uden Spikler, samt en Række Pigge paa hver Side, saale- 
des at to og to staa sammen og gribe ind i de tilsvarende 
paa den modsatte Side, Fig. 10, a. 11, a  Udenfor Am- 
bulacralfuren er der 3 Rækker Pigge, hvoraf de, som staa 
i den inderste Række, ere ligesaa lange som Furepapil- 
lerne, men have en bredere Basis. Disse Pigge have en 
noget særegen Ntilling, idet de danne korte, transversale 
Rader med 3 1 hver Rad; i en enkelt Rad sees ogsaa 4 Pigge, 
Fig. 10, 0. 11, 0. 
Mundaabningen lukkes af to temmelig lange, stærke 
Tænder; paa Kjævernes Rand 2—3 store Pigge, Fig. 10, ¢. 
Interbrachialrummene ere besatte med fine Pigge, der 
indimod Mundvinkelen blive noget større og staa mere iso- 
lerede, Fig. 10. 11. 
Søstjernens Rand er temmelig skarp og dannes af de 
ventrale Randplader, der bære fra 3 indtil 6 Pigge, Fig. 
11, c De dorsale Randplader neppe synlige, førend 
Exemplaret var torret; men da bleve de meget tydelige. 
Saavel af disse som af de ventral Randplader udgjør An- 
tallet 38. Å 
Hudskelettet er paa Rygfladen dannet af Kalkstyk- 
ker, der have en noget forskjellig Form. Paa Skiven ere 
de ovale, have en lidt hvælvet Overflade, der bærer Pig- 
gene, imedens Underfladen er stærk konkav, Fig. 13. Disse 
Kalkplader støde tæt til hverandre, yderst sjelden ligger 
den ene Rand over den andens, og kun mellem deres Side- 
rande er der et lidet Rum, hvori sees en eller flere Tentakel- 
porer. De danne et Net med yderst smaa Masker. 
Paa Armene ere Kalkstykkerne mere langstrakte, 
ligge endnu tættere sammen, hyppigere taglagte, danne 
spines. The madreporite is circular, and is seated in a 
cavity in the imtegument, situated, between the inter- 
brachial angle and the anal aperture; distant only 5” 
from the last named (figs. 8, 9). 
Both the abactinal and the actinal surfaces, are beset 
with extremely slender, somewhat scattered spines, which 
only become visible, when submitted to a powerful magni- 
fier (fig. 12). 
On the abactinal surface; where they are displaced 
by a multitude of larger and smaller groups of tentacular 
pores; the spines are smaller them on the actinal surface, 
upon which, several minute longitudinal furrows are seen 
(igs, 10, ii, 
The five rays are rather flat, and broad at their 
origin; and towards the somewhat blunted tip, the tentac- 
ular pores become extremely scarce; whilst, the spines be- 
come in this situation, more closely set. 
The ventral furrow is narrow, and is furnished with two 
series of suckers free from spiculæ; and also, with a row 
of spines on each lateral margin, arranged two and two 
together, in such manner, that they interlace with the cor- 
responding spines of the opposite margin (figs. 10, a. 11,4). 
Outside the ambulacral furrow, there are 3 series of spines; 
of which, those situated in the inmost series are as long 
These 
spines are somewhat peculiarly placed; in as much, that 
they are arranged in short transyerse series containing 3 
as the furrow papillæ, but have a broader base. 
spines in each series, but in an occasional series, however, 
4 spines are sometimes to be seen (figs. 10, b. 11, 0). , 
The oral aperture is closed by two pretty long strong 
teeth, and on the margin of the jaws 2—3 spines occur 
(fig. 10, ¢). 
The interbrachial spaces are beset with slender spines; 
which, in towards the oral angle, become somewhat larger, 
and stand more isolated (figs. 10. 11). 
The margin of the starfish is rather sharply defined, 
and, is formed by the ventro-marginal plates, which carry 
from 3, up to 6 spines (fig. 11, c). The dorso-marginal 
plates were scarcely perceptible until after the specimen 
was dried, but then they became quite distinct. Both the 
ventro-marginal, and dorso-marginal ‘series of plates, are 
alike in number, having each 38 plates. 
On the abactinal surface, the integumental skeleton 
is formed of calcareous ossicles having a somewhat vary- 
ing form. The ossicles of the disk are ovate, and have a 
slightly arcuate superior surface, which carries the spines, 
whilst, the inferior surface is strongly concave (fig. 13). 
These calcareous plates butt close to each other, and, very 
rarely, does the margin of one plate imbricate upon the 
other plate; and only between the lateral margins, is there 
left a small interspace, in which one or more tentacular pores 
are visible. The calcareous plates form a reticulation, hav- 
ing extremely small meshes. 
Upon the rays, the calcareous ossicles are more elong- 
ated, and lie still closer together, besides which, they more 
