101 



er meget vanskeligt at befri dem; de ere 0.108""* lange, 

 0.084"»* brede, Fig. 33. 



1 Grenene og Smaagrenene ligge Spiklerne mere 

 spredte og ere her betydeligt større end paa Stammen- 

 Køller, Klubber og Spindler ere de hyppigste. Køllerne 

 ere som oftest tornede, af og til træffes en bladet; de ere 

 fra 0.240— 0.364"»" lange og fra 0.060— 0.132'"™ brede i den 

 tykke Ende, Fig. 34—36. Klubberne ere tornede, fra 

 0.116—0.144™" lange og fra 0.056-0.060'*'" brede i den 

 tykke Ende, Fig. 37. 38. Spindlerne ere temmelig for- 

 skjellige; enkelte smaa, lidet udviklede, ere takkede, fra 

 0.068—0.144™» lange og fra 0.024—0.028"»" brede, Fig. 

 39. 40, og ligge som oftest ved Siden af Køllerne og de 

 store Spindler, hvilke sidste ere jævnligt noget krummede 

 og bladede med afstumpede Ender; de ere 0.29S""" lange, 

 0.080""" brede, Fig. 41; imellem de nævnte Spilder sees 

 enkelte sammensatte Stjerner, der ere fra 0.112—0.120""* 

 lange og fra 0.048—0.064"»" brede, Fig. 42. 43. 



Paa Polypens Bagkrop fin des væsentligst Køller og 

 Spindler, sjeldnere sees her Klubber. Køllerne ere dels 

 lige, dels krumme, bladede, fra 0.192 — 0.296""* lange og 

 fra 0.068-0.100»»" brede i den tykke Ende, Tab. XV, 

 Fig 1 — 3. Spindlerne ere takkede med mere eller mindre 

 tilspidsede Ender, fra 0.116—0.268'*"' lange og fra 0.028— 

 0.052 mm brede. Fig. 4. 5. Klubberne ere bladede, nærme 

 sig noget Køllen, ere fra 0.148 — 0.160""" lange og fra 0.048 

 —0.072»"» brede i den tykke Ende, Fig. 6. 7. 



Paa Polypens Forkrop er det, foruden de paa Bag- 

 kroppen omtalte Spikier, især store, smukke, bladede Køller, 

 der ere mest fremtrædende ; de danne hovedsagelig den 

 tykke Kam paa Tentaklernes aborale Flade. Disse Køller 

 ere 0.400""" lange, 0.108""" brede i den tykke Ende og 

 have et langt Skaft, Fig. 8. Imellem disse sees enkelte 

 krumme, bladede eller takkede Klubber, der ere 0.148""" 

 lange, fra 0.036 — 0.056""* brede i den tykke Ende, Fig 9, 

 og, fornemmelig paa Tentaklerne, forskjelligtibrmede, mere 

 eller mindre flade, takkede Spilder, hvoraf yderst faa nærme 

 sig Korsformen; de ere fra 0.048 — 0148""" lange, og fra 

 0.016—0.048""* brede, Fig. 10—13. 



Polyperne ere paa deres ydre Væg beklædte med et 

 Ectoderm, bestaaende af to Lag polyædriske Celler, Tab. 

 XIV, Fig. 44, a, indenfor hvilket lindes et bredt, hyalint 



(Pl. XIV, figs. 29—31). The subclavates measure from 0.092""" 

 in length, and 0.036""" in breadth above (Pl. XIV, fig. 32). 

 The rosettes are strongly enveloped in the ectoderm cells, 

 from which it is very difficult to release them; they mea- 

 sure 0.108"»» in length, and 0.084""" in breadth (PI. XIV, 

 fig. 33). 



In the branches and branchlets, the spicules are placed 

 more scattered, and are, here, considerably larger than on 

 the stem. Subclavates, clavates, and fusees are the most 

 frequent forms. The subclavates are, most frequently, acul- 

 eated; now and then a foliated one is met with; they 

 measure from 0.240—0.364""* in length, and from 0.060— 

 0.132""" in breadth at the thick extremity (PL XIV, figs. 

 34 — 36). The clavates are aculeated, and measure from 

 0.116—0.144""» in length, and from 0.056—0.060'"'" in 

 breadth at the thick extremity (PI. XIV, figs. 37. 38). The 

 fusees are rather variable in form; some small imperfectly 

 developed ones are spicate, and measure from 0.068 — 

 0.144»*"' in length, and from 0.024—0.028""" in breadth 

 (PI. XIV, figs. 39. 40), and, most frequently, he alongside 

 the subclavates and the large fusees, which last are, usually, 

 somewhat curved and foliated, and have truncate extrem- 

 ities; they measure 0.296'* m in length, and 0.080""" in 

 breadth (PL XIV, fig. 41). Between these spicules, occa- 

 sional complex stellates are seen, measuring from 0.112 — 

 0.120»»» in length, and from 0.048—0.064""" in breadth 

 (PL XIV, figs. 42. 43). 



On the posterior body of the polyp, subclavates and 

 fusees are, principally, found. Clavates are seen, here, less 

 frequently. The subclavates are, sometimes straight, some- 

 times curved and foliated, and they measure from 0.192 — 

 0.296'"'" in lenglh, and from 0.068—0.100'"'» in breadth at 

 the thick extremity (PL XV, figs. 1—3). The fusees are 

 spicate, and have more or less acuminate extremities; they 

 measure from 0.116—0.268""" in length, and from 0.028 — 

 0.052'»"' in breadth (PL XV, figs. 4—5). The clavates are 

 foliated, and approach in form somewhat to the subclavate ; 

 they measure from 0.148— 0.160""» in length, and fromO.048 

 —0.072"'"' in breadth at the thick extremity (PL XV, figs. 6—7). 



The spicules of the anterior body of the polyp, 

 besides those spoken of as pertaining to the posterior 

 body, which are most prominent, are, especially, large, beau- 

 tiful, foliated subclavates. They form, principally, the thick 

 ridge on the aboral surface of the tentacles. These sub- 

 clavates measure 0.400'*"' in length, and 0.108""" in breadth 

 at the thick extremity, and have a long shaft (PL XV, fig. 8). 

 Between them, a few curved, foliate, or spicate clavates are 

 seen; these measure 0.148""» in length, and from 0.036 — 

 0.056""" in breadth at the thick extremity (PL XV, fig. 9); 

 and there are seen, especially upon the tentacles, variously 

 formed, more or less flat, spicate spicules, of which extremely 

 few approach the cruci-form; they measure from 0.048 — 

 0.148'»'" in length, and from 0.016—0.048'""' in breadth 

 (PL XV, figs. 10—12). 



The polyps, upon their exterior wall, are clad with 

 an ectoderm, consisting of two layers of polyhedrical cells 

 (PL XIV, fig. 44, a), inside of which, there is found a 



