60 
Samtlige Celler, saavel de udviklede som uudviklede, 
ere rigelig forsynede med Kalkspikler, der have en for- 
skjellig Størrelse, imedens den trekantede Form tilhører 
dem alle. De ere fra 0,161 til 0,440”” lange og fra 
0,018—0,0327” brede. Deres Ender ere hyppigst afstum- 
pede og enkeltvis forsynede med Takker. Disse Spikler 
ere i mange Lag saa sammenpakkede, at den tykke Celle- 
væg har et Udseende, som om den er dannet af bare Kalk, 
har sine Vanskelig- 
fra hverandre. 
saa at det selv med kaustisk Kalilud 
heder at skille Spiklerne tilstrækkelig 
Polyperne ere eylindriske og sandsynligvis retraktile, 
67” lange, hvoraf Kroppen er 3”” lang. Paa Kroppen 
lagttages 8 meget ophoiede, paalangsgaaende, brede Ribber, 
Fig. 9, b, der dannes af mange Lag tæt paa hinanden 
liggende, trekantede Spikler, som ere afrundede paa En- 
derne og tildels finttakkede; de ere fra 0,320—0,440"” 
lange og fra 0,020 —0,028”” brede. 
Ribber, Fig. 9, c, ere ligeledes optagne af lignende Spikler, 
Felterne imellem disse 
men her ligge de mere paatvers og ere mere spredte. 
Tentaklerne have samme Længde som Kroppen og ere 
forsynede med tykke, koniske Pinnuler, Fig. 9. Naer und- 
tages den midterste Del af den adorale Flade, er hele 
D 
Tentakelen ligesom indkapslet af Kalkspikler. Paa den 
aborale Flade er en høi, bred Ryg, sammensat af Spikler, 
lig de største paa Kroppen; men til Siderne og paa Pin- 
nulerne ere Spiklerne ikke saa sammenpakkede, ligesom 
de ere mindre og have tildels en lidt forskjellig Form. 
De ere dels elliptiske, dels have de spidse, dels afstumpede, 
finttakkede Ender, ere fra 0,150—0,200”” lange, og fra 
0,008—0,012”” brede. Mundskiven er lidt hvælvet og rig 
paa Kalkspikler, lig dem i Polypkroppen. Svælget er fol- 
det paatvers, har en brun Farve, og i dets Bindevæv er 
en Mængde Spikler leirede, fuldkommen lig dem, som findes 
paa Tentaklernes Pinnuler. 
Ventralfladen er lidt fladtrykt, har en meget smal, 
paalangsgaaende Fure, Fig. 8, c, fra hvis Rande Celleræk- 
kerne tage deres Begyndelse. Naar undtages dette yderst 
smale, nøgne Belte paa Ventralfladen, er den øvrige Del 
af Rachis besat med Polyper. 
Under de ovenbeskrevne, udviklede Polyper sees en 
rund Zooide, som er vel indpakket i Kalkspikler. Det er 
sandsynligt, at der imellem Rækkerne af de udviklede Po- 
lypceller findes Zooider. 
Stilken er rund, smalner ganske lidt af ned imod 
Enden, der danner en konisk Bulbus, Fig. 8. Stilkens 
Sarcosoma er temmelig tyk og fast af Spikelafsætninger. 
Spiklerne i Stilken ere forskjellige i Form og Størrelse. 
Størstedelen er trekantet, noget fladtrykt med brede, tak- 
kede Ender og Kanter, Fig. 10—14, de ere fra 0,150—0,180”” 
ange, fra 0,020—0,028”” brede; enkelte ere næsten gaffel- 
All the cells, both, the fully developed well as 
the undeveloped, are abundantly furnished with calcareous 
spicules, which have a variable size, although, the tri- 
angular form is common to all of them. They measure 
from 0.1617” to 0.440”” long, and from 0.018—0.032”” 
broad. Their extremities are, most frequently, blunted, and 
are, occasionally, aculeated. These spicules are so tightly 
packed, in many layers, that the thick wall ofthe cell obtains 
the appearance of being composed of calcium alone, and 
as 
even, when caustic potash in solution is used, it is not 
without difficulty, that the spicules 
separated from each other. 
The polyps are cylindrical, and probably retractile. 
They measure 6”” in length, of which, the body occupies 
3”, On the body there is observable, 8 considerably 
elevated, broad, longitudinal ribs (fig. 9,0); these are formed 
of many layers of triangular spicules placed close upon 
can be sufficiently 
each other, and which are rounded on the extremities, and 
partly, minutely aculeated; they measure from 0.320—0.440”” 
0.020—0.0287” broad. The areas between 
9, c), are, also, occupied by similar spicules, 
but here, they are situated more transversally, and are 
more dispersed. 
long, and from 
these ribs (fig. 
The tentacles have the same length as 
the body, and are furnished with thick conical pinnules 
(fig. 9). With the exception of the mesial part of the 
adoral surface, the entire tentacle is, as it were, enclosed 
in a capsule of calcareous spicules. On the aboral surface, 
there is, a high broad dorsum, composed of spicules 
similar to the largest spicules of the body, but, to the 
sides, and on the pinnules, the spicules are not so much 
packed together; whilst, also, they are smaller here, and 
have, partly, a different form. They are, partly, elliptical, 
and they have, partly, pointed, and partly, blunted, minutely 
aculeated extremities; they measure from 0.150 --0.200”” 
long, and from 0.008—0.012”” broad. The 
slightly arched, and is rich in calcareous spicules like those 
of the body of the polyp. The gullet is folded transversally, 
oral disk is 
and embedded in its connective- 
tissue, a mass of spicules is found, exactly similar to those 
and has a brown colour; 
found on the pinnules of the tentacles. 
The ventral surface is a little flattened, and has a 
very narrow longitudinal furrow (fig. 8, c), in whose margin, 
the cellular series have their origin. With exception of 
this extremely narrow, unoccupied stripe on the ventral 
surface, the whole of the remainder of the rachis is beset 
with polyps. 
Below the above described developed polyps, a round 
zooid is seen, which is well enclosed by calcareous spic- 
ules. It is probable, that zooids are found between the 
series of the developed cells of the polyps. 
The stem is round, and becomes reduced a little in 
thickness, down towards the extremity, where, it forms a 
conical bulb (fig. 8). The sarcosoma of the stem is rather 
thick, and firm, owing to deposited spicule. The spic- 
ules of the stem are, variable in form and size, and the 
flattened, and 
have broad aculeated extremities and edges (figs. 10—14); 
greater number are triangular, somewhat 
