101 



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

 0.084 mra brede. Fig. 33. 



1 Grenene og Småagrenene 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— 0.1 32""" 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 

 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 jævuligt noget krummede 

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

 0.080""" brede, Fig. 41; imellem de nævnte Spikler 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 rindes væsentligst Koller og 

 Spindler, sjeldnere sees her Klubber. Køllerne ere dels 

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



fra 0.068— O.l 00 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""" 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, toruden de paa Bag- 

 kroppen omtalte Spikler, 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 ert.' 0.148""" 

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

 og, fornemmelig paa Tentaklerne, forskjelligtformede, mere 

 eller mindre flade, takkede Spikler, hvoraf ydersl faa nærme 

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

 0.016— < 1.048»"" brede, Fig. 10—13. 



Polyperue 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 mcasure from 0.092""" 

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

 The rosettes are strongly enveloped in the ectoderm cells, 

 frem which it is very diffieult to release them; they mea- 

 sure 0.108""" in length, 1 and 0.084'"'" in breadth (Pl. XIV, 

 fig. 33). 



In the branehes and brauchlets, the spicules are placed 

 more scattered, and are, here, considerably larger thau 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: tliev 

 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 (Pl. XIV, figs. 37. 38). The 

 tusees are rather variable in form; some small imperfectly 

 deveioped ones are spicate, and measure from 0.068 — 

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

 (Pl. XIV, figs. 39. 40), and, most frequently, lie alongside 

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

 somewhat curved and foliated, and have truncate extrein- 

 ities; they measure 0.296""" in length, and 0.080""" in 

 breadth (Pl. XIV, rig. 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 length, and from 0.068—0.100'"'" in breadth at 



the thick extremity (Pl. XV, figs. 1—3). The tusees are 

 spicate, and have more or less acuminate extremities; they 

 measure frem 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 from 0.048 

 —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 108 ' in breadth 



at the thick extremity, and have a long shaft i Pl. XV, fig. 8). 



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



een; 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 

 tonned. 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 layefs of polyhedrical cells 

 (Pl. XIV, fig. 44. <i), inside of which, there is found a 



