No. 4. 
Tab. VI, Fig. 11. 
1125 fax 145 
Stilken, der paa den øverste Trediedel danner en 
langstrakt Bue, er noget dreiet efter Længdeaxen, 1847” 
fra Grunden til Rachis. Den nedre, bulbøse Del, 
som er 50” lang, paa Midten 2,57” og paa dens øverste 
Parti 57” bred, samt noget fladtrykt paa Ventral- og 
Dorsalfladen, ender i en ægformet, 4”” bred Skraaflade, 
der lober ud i en Spids, Fig. 11. Tyndest er Stilken op 
skedeformigt udvidede Del, som 
lang 
imod den er 
stærkt bøiet, 12”” lang, 2,5” bred, hvor den gaar over i 
; dy 5 ) > 
Rachis. Denne er 7” lang, 5,5”” bred, men smalner suc- 
cessivt af op imod Enden, Fig. 12. 
øverste, 
Ventralfladen er stærkt konvex, noget dreiet til Siden 
og har paa Midten en nøgen, glat Længdelinie, hvor Axen 
skinner igjennem, men er forresten tæt besat med Zooider, 
Ie, 185 Gp 
Dorsalfladen er lidt konkav, ikke meget bred og tæt 
besat med Zooider, der udbrede sig imellem Polyperne, hvor 
de danne de tidligere omtalte Zooidefelter, af hvilke der 
ere to paa hver Side, Fig. 13, a. 
Sidefladerne ere her mere udviklede end paa de 3 
foregaaende Exemplarer og ere ligeledes besatte med Zooi- 
der, saa at Rachis, naar undtages den omtalte Midtlinie 
paa Ventralfladen, er ganske indtagen af Zooider. 
Rachis bærer 8 udviklede Polyper og 1 uudviklet. 
Terminalpolypen sidder paa Enden af Rachis; den er 7”” 
lang, 3”” bred; Tentaklerne omtrent 10”” lange, Fig. 12,0. 
13, b. 14, b. Lige under Terminalpolypen sidde ved Si- 
den af hinanden paa Midten af Dorsalfladen 2 smaa Po- 
lyper, hvis Krop er 4”” lang med lidt kortere Tentakler, 
en 183 @, 145 6 
ledes midt paa Dorsalfladen, staar en Polyp, der er 8”” 
lang, 2”” bred, med Tentakler lidt længere end Kroppen, 
Fig. 13, d. 14, d. Paa hver Side af Dorsalpolyperne ud- 
gaa 2 Polyper, hvoraf de 2, der staa nærmest Dorsalsiden, 
ere 10” lange, 4” tykke, med 12” lange Tentakler, Fig. 
14, e, imedens de øvrige 2, der staa lige paa Siden, nær- 
mere Ventralfladen, ere 127” lange, 4”” brede med 14—16”” 
lange Teutakler, Fig. 12, ¢ 14, f. Under Endepolypen, 
men noget til høire Side henimod Ventralfladen, sees en 
liden, konisk Forhøining, der er en Polyp i Udvikling. 
Nedenfor disse to smaa Polyper, lige- 
Rachis er paa dette Exemplar ikke saa stærkt for- 
dreiet som paa det foregaaende; den bilaterale Symetri er 
heller ikke saa vanskelig at finde sig tilrette i, som Til- 
fældet var med No. 3. 
20 
No. 4 specimen. 
JAG WAL, mes lil, 12, 185 145 
The stem, on its superior third part, forms an elong- 
ated are, somewhat twisted longitudinally, and is 184” 
long, from the base to the rachis. The inferior bulbous 
portion, is 50”” long, 2.57” broad at the middle, and 5”” 
broad at the superior part, and is somewhat flattened on 
the ventral and dorsal surfaces. It terminates in an ovate 
sloping surface, haying a breadth of 4"; and projecting 
in a point (fig. 11). The stem is thinnest, up towards 
the superior, sheath-formed, dilated part; this is sharply 
curved, and has a length of 12””, and a breadth of 2.5””, 
at the point where it passes over into the rachis. The 
rachis is 7”” long, and 5.57” broad, but becomes gradu- 
ally narrower towards the extremity (fig. 12). 
The ventral surface is sharply convex, and is some- 
what twisted laterally; in its middle, there occurs a 
smooth longitudinal line, through which the axis becomes 
visible; 
(fig. 
but, otherwise, it is closely beset with zooids 
12, a). 
The dorsal: surface is somewhat concave; not very 
broad; and is closely beset with zooids, which spread 
themselves between the polyps; forming thus, the previ- 
ously mentioned zooidal areas, of which, there are two on 
each side (fig. 13, a). 
The lateral surfaces in this specimen, are more de- 
veloped than in the three previous specimens; and, are also 
covered with zooids, so, that the rachis is entirely covered 
with zooids, except, the mesial line of the ventral surface 
already spoken of. | 
The rachis carries, 8 fully developed polyps, and 1 
undeveloped polyp. The terminal polyp is situated on the 
extremity of the rachis, and is 7”” long, and 3”” broad. 
The tentacles are about 10”” long (figs. 12,0. 13,0. 14,0). 
Just below the terminal polyp, 2 small polyps are situated 
alongside each other, in the middle of the dorsal surface. 
Their body is 4”” long, and the tentacles are somewhat 
shorter (fig. 13, c. 14, ¢). Beneath these two small pol- 
yps, and, also, in the middle of the dorsal snrface, there 
stands a polyp, which is 8” long, and 2”” broad, with 
tentacles somewhat longer than the body (figs. 13, d. 14, d). 
On each side of the dorsal polyps, two polyps proceed, of 
which, the two situated next to the dorsal side, are 10”” 
long, and 4”” thick, and have tentacles 12”” long; (fig. 14, e) 
whilst, the other two; which are situated exactly on the 
side, nearer to the ventral surface; are 127” long, and 4”” 
broad, with tentacles 14—16” long (fig. 12, c. 14, f). 
Below the terminal polyp, but somewhat to the right side, 
towards the ventral surface; a small conical protuberance 
is seen; this is a polyp in process of development. 
In this specimen, the is not so strongly 
twisted as in the previous ones. The bilateral 
ment, is, also, not so difficult to trace out as is the case 
rachis 
arrange- 
in No. 3 specimen. » 
