Bugfuren temmelig smal, er forsynet med to Rader 
Papiller, som ere fladtrykte, lange; i den inderste Rad ere 
de længst, og have paa deres ydre, øverste Halvdel en stor 
Dusk korsformede Pedicellarier, Fig. 2. Disse Furepapil- 
ler have tildels Udseende af at staa i 3 Rækker, hvilket 
hidrører derfra, at Adambulacralpladerne bære afvexlende 
2 og 1 Papille. Nede i Furen, langs dens Sider, sees en- 
kelte temmelig smaa, langt fra hinanden staaende, ligefor- 
mede Pedicellarier, der ere fæstede til Grunddelen af de 
indre Furepapiller. Imellem den ydre Række Furepapiller 
og den ventrale Række Randpigge er et smalt Belte, knapt 
1”” bredt, paa hvilket findes yderst faa, (2—3) temmelig 
lange Pigge, men som forresten er nøgent. 
De korsformede Pedicellarier ere ganske overensstem- 
mende med dem, der findes hos Asterias rubens, som ere 
beskrevne og afbildede hos Ed. Perrier!: men da hans 
Afbildning ikke er fuldkommen korrekt, henvises til vor Af- 
bildning, Fig. 5. 
De ligeformede Pedicellarier, hvoraf der findes meget 
faa og kun 1 Ambulacralfuren, ere derimod noget forskjel- 
lige fra dem, der findes i overordentlig stor Mengde hos 
Asterias rubens. Basaldelens undre Rand er meget krum. 
Kjæverne ere temmelig korte, have en bred Grunddel, og 
deres indre Rande, der ere besatte med Tænder, slutte tæt 
sammen næsten lige ned til Basaldelen, saa at der findes 
kun en meget liden Aabning længst nede imellem dem, 
naar de ere lukkede, Fig. 6. For Sammenlignings Skyld 
have vi afbildet en ligeformet Pedicellarie af Asterias ru- 
bens, hvorved Forskjellen tydeligst sees, Fig. 14. 
Ryghudens Skelet er bygget af større og mindre Kalk- 
plader, som ere flade paa den Side, der vender til Krops- 
hulheden og hvælvede paa sin øvre Flade, hvor der findes 
paa Midten en rund Forhøining, forsynet med en lille Ar- 
ticulationsflade for en Pig, Fig. 7, a. Disse Kalkplader 
have ,.3—4 Udløbere, Fig. 7,0, der ere temmelig korte, og 
som lægge sig taglagte paa de tilstødende Kalkpladers Ud- 
løbere, hvorved fremkommer et Kalknet, hvis Masker ere 
noget uregelmæssige og 1 Regelen ikke meget store, Fig. 7. 
I enkelte, noget større Masker, sees 1—2 meget smaa 
Kalkstykker at være indleirede. 
Paa Siderne af Armene ere Kalkpladerne meget større, 
have en Korsform, Fig. 7, c, og ere stillede i regelmæs- 
sige Rækker, saaledes nemlig, at hver Arm af Korset læg- 
ger sig paa en tilstødende Kalkplades Korsarm, hvorved 
fremkommer aflange Masker, der ere stillede i 3 Længde- 
rader fra Armens Grund til dens Spids, Fig. 7, d. Af 
disse Sideplader skulle vi lidt nærmere omtale de to Ræk- 
ker, der kunne betragtes som Randplader. De inderste, de 
nærmest Bugfladen (ventrale Randplader), Fig. 2, a, ere 
ikke ganske korsformede, forsaavidt som de mangle en Arm, 
1 Ed. Perrier. Recherches sur les pédicellaires et les ambulacres. 
Annales des Se. Nat. 5 Série, Tome XII pag. 228, pl. 17, fig. 2. 
The ventral furrow is rather narrow, and is supplied 
with two rows of long, flattened papille, of which those in 
the interior row are the longest; their superior exterior 
half as a large tuft of cruciform pedicellariæ (fig. 2). 
Owing to the adambulacral plates carrying 2 and 1 papilla 
alternately, the furrow-papillæ have somewhat the appear- 
ance of standing in 3 rows. Within the furrow, along 
its lateral surfaces, a few rather small rectiform pedicel- 
lariæ are visible, placed at considerable intervals from each 
other, and attached to the basal part of the internal furrow- 
papillæ. Between the exterior row of furrow-papille, and 
the ventro-marginal spines, there is a narrow, barely 1” 
broad border, upon which extremely few, (2—3) tolerably 
long spines are found, but which, is, otherwise, bare. 
The cruciform pedicellariz are exactly similar to those 
found in Asterias rubens, described and illustrated by Ed. 
Perrier,! but, as his illustration is not quite correct, we 
refer to our illustration (fig. 5). 
The rectiform pedicellariæ; of which very few are 
found, and situated only in the ambulacral furrow; are, 
upon the other hand, somewhat different from those which 
are found in such extraordinarily large numbers in Asterzas 
rubens. 
curved. 
The inferior margin of the basal portion is much 
The jaws are rather short, and with a broad base; 
their inner margins are furnished with teeth; and they close 
together along the entire length of the jaws, almost up to 
the base; so, that in the closed position, only a very small 
opening between them is left at their base (fig. 6). For 
the sake of comparison we have also illustrated a rectiform 
pedicellariæ of Asterias rubens, by which the difference 
is distinctly seen (Pl. III, fig. 14). 
The dorsal dermal skeleton is constructed of larger 
and smaller calcareous plates, flat on the surface facing 
towards the body cavity, arched upon the superior surface, 
where, there occurs a circular mesial prominence, furnished 
with a small articulatory surface for a spine, (flg. 7, a). 
These calcareous plates have 3—4 prolongations, (fig. 7, 0), 
which are pretty short, and placed so as to overlap with 
the prolongations of the adjoining calcareous plates, by which 
a calcareous reticulation is produced, composed of somewhat 
irregularly formed meshes, which are, commonly, not very 
large (fig. 7). In a few of the larger meshes, 1 or 2 very 
minute calcareous corpuscles are seen to be embedded. 
On the lateral surfaces of the rays, the calcareous 
plates are cruciform, and much larger (fig. 7, c) and they 
are arranged in regular series, in such manner, that each 
arm of the cross, overlaps an adjoining calcareous plate’s 
cross-arm, producing thus, oblong meshes, distributed in 3 
longitudinal rows extending from the origin of the ray, 
to its distal extremity (fig. 7, d). 
We shall speak a little more minutely at this point, 
in regard to the two rows of lateral plates, which may be 
considered to be marginal plates. The inmost, that is, those 
| Ed. Perrier. Recherches sur les pédicellaires et les ambulacres. 
Annales des Sc. Nat. 5 Série, Tome XII pag. 228, pl. 17, fig. 2. 
O* 
