50 



Basaldelen er kun lidet udvidet og Toles glat. Hele 

 Stammen er meget blød; dens øverste Ende deler sig i to 

 Hovedgrene; Længdekanalerne ere stærkt fremtrædende og 

 gjennemskinnende, saa at Septula godt kan sees. Hoved- 

 grenene have forskjellig Længde; nederst paa Stammen ere 

 de kortest, paa Midten længst, omkring 20°"", og ved 

 deres Udspring 15""" i Omkreds; længere oppe blivfi de 

 kortere, men noget tykkere. De ere glatte, runde, meget 

 bløde, bøielige og gjennemsigtige; mange af dem dele sir- 

 lige ved Grunden, men som oftest dele de sig etStykke fra 

 deres Udspring i 2 Grene, hvorfra igjen udgaa mange 

 Smaagrene, som dele sig i Stilke (Endegrenene), der bære 

 fra 3 — 6 Polyper, Fig. 18. Kun Stammens Basaldel inde- 

 liolder Kalkspikler, dens øvrige Del, ligesom samtlige Grene 

 med deres Forgreninger, er uden saadanne. 



Polyperne ere cylindriske, 8 — 10""" lange, med en noget 

 fbrlænget Bagkrop og udspringe alle fra de yderste For- 

 greningers Ender. Hyppigst ere 2, sjeldnere 3 Polyper 

 sammenvoxede ved deres Grunddel. Polyperne ere ganske 

 klare, saa at Svælget og Mesenterialfilamenterne kunne 

 sees. og paa deres ydre Flade tindes 8 Dobbeltrækker 

 Spikler, hvoraf de 2 paa Dorsalsiden indtage Størstedelen 

 af Polypens Længde; de 2 paa Ventralsiden ere meget 

 korte og indtage kun en liden Del af Forkroppen, imedens 

 de paa Siderne aftage i Længde fra Dorsal- til Ventral- 

 siden. Tentaklerne ere omtrent 4""" lange, forsynede med 

 Pinnuler, og paa deres aborale Flade gaa Kroppens Spikel- 

 rækker et lidet Stykke op paa Basaldelen, Fig. 19. 



I Stammens Basaldel ligge Spiklerne temmelig spredte 

 og ere meget smaa. Formerne, hvorunder de optræde, ere 

 mange. Takkede Spindler med stumpe og spidse Ender. 

 0.100""" lange, 0.048""" brede, Fig. 2(1. 21'; Firlinger i 

 Form af Kors, besatte med smaa Papiller, 0.044""' i Bredde 

 go l.anple. Fig. 22: takkede Spindler med vingeformigi 

 Udvidninger, 0.098"»" lange, 0.033™'" brede. Fig. 23. 24. 25. 



Spiklerne paa Polypkroppen og Tentaklerne danne 

 takkede Spindler med spidse og tildels stumpe Ender, 

 0.250™ lange, 0.030""" brede, Fig. 26; tornede, dels krumme, 

 dels lige Koller, 0.300""" lange. 0.050""" brede, Fig. 27. 28, 

 og imellem disse to Former sees enkelte korsformede Fir- 

 linger, hvis Længdestok er 0.300'"'" og Tverstok 0.130™ m , 

 Fia-. 29. 



from the uppermost part oi' the basal portion to the suinmit, 

 with branches (fig. 18). 



The basal part is only slightly dilated, and feels 

 smooth to the touch. The entire stem is very sott and its 

 uppermost extremity ramifies into two main branches. The 

 longitudinal ducts are strongly prominent, and translucent, 

 so that the septula can easily be soen. The main branches 

 are not uniform in length. They are shortest on the Iowest 

 part oi' the stem, and longest on its middle and measure, there, 



about 20""" in length, aud 15 ' in eircumference at the 



root. Further up, they become shorter but somewhat 

 thicker. They are smooth. eylindrical, verv soft, flexible, 

 and translucent; many of them ramify, quite at the root. 

 but, most frequently, they ramify a little way beyond the 

 root into 2 branches, from which, again, many branchlets 

 proceed, and these separate into stalks (terminal branches) 

 that carry ii'om 3 — 1> polyps (fig. L8). The basal part of 

 the stem. alone, contains calcareous spicules; the remainder 

 as well as all of the branches and their ramifications, are 



devoid of these. 



The polyps are eylindrical, aud measure 8 — 10""" in 

 length, and have a somewhat prolonged posterior body; 

 they all proceed from the outermost extremities of the ramifi- 

 cations. Most frequently, 2. and. more rarely, 3 polyps are 

 concreted together at their basal part. The polyps are 

 quite translucent, so thai the gullet and the mesenterial 

 filaments are visible: on their exterior surface, * double 

 series of spicules are found, of which the 2 on the dorsal 

 side occupy the greater part of the length of the polyp. 

 The 2 on the ventral side are much shorter. and occupy 

 only a small part oi' the anterior body. whilst those upon 

 the >ides diminish in length. from the dorsal to the ventral 

 side. The tentacles measure about 4""" in length. and are 

 furnished with pinnules; upon their aboral surface, the spi- 

 cular series of the I >ody proceed a little way up the basal 

 pari (Fig. 19). 



ln the basal part of the stem, the spicules are placed 

 pret ty dispersed, and are very minute. The forms in 

 which they appear are numerous; spicate fusees, with blimt 

 and acuminate extremities, measuring 0.100""" in length, 

 and 0.048""" in breadth (figs. 20. 21); cruciform quadruplets, 

 beset with small papillæ and. measuring 0.044""" in breadth 

 and length (fig. 22); spicate fusees, with pennate dilations 



and, measuring 0.098 ' in length, and 0.033 in breadth 



(figs. 23. 24. 25). 



The spicules on the body of the' polyp and the ten- 

 tacles, form spicate fusees, having acuminate and, partly, 



blunt extremities. and these measure 0.250 in length, aud 



0.030 in breadth (hg. 26); aculeated, partly. bent, partly, 



straight subclavates measuring 0.300""" in length, and 0.050 



in breadth (figs. 27. 28), and between these two forms, a 

 tew cruciform quadruplets are seen, whose longitudinal 

 arm measures < >.3< » I""" , and the transversal arm 0.13* 

 (fig. 29,. 



