50 



Basaldelen er kun lidet udvidet og føles 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 mm i Omkreds; længere oppe blive de 

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

 bløde, bøielige og gjennemsigtige; mange af dem dele sig 

 lige vedGrunden, men som oftest dele de sig et Stykke fra 

 deres Udspring i 2 Grene, hvorfra igjen udgaa mange 

 Smaagrene, som dele sig i Stilke (Ende grenene), der bære 

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

 holder Kalkspikler, dens øvrige Del, ligesom samtlige Grene 

 med deres Forgreninger, er uden saadanne. 



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

 forlænget 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 

 Spikier, 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" !ra 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 stampe og spidse Ender, 

 0.100™" lange, 0.048"<" J brede, Fig. 20. 21 r ; Firlinger i 

 Form af Kors, besatte med smaa Papiller, 0.044 ram i Bredde 

 go Længde, Fig. 22 ; takkede Spindler med vingeformige 

 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"" 7 ' lange, 0.030'""" brede, Fig. 26 ; tornede, dels krumme, 

 dels lige Køller, 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""", 

 Fis-. 29. 



from the uppermost part of the basal portion to the summit, 

 with branches (%. 18). 



The basal part is only slightly dilated, and feels 

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

 uppermost extremity ramifies into two main branches. The 

 longitudinal ducts are strongly prominent, and translucent, 

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

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

 part of the stem, and longest on its middle and measure, there, 

 about 20""" in length, and 15""" in circumference at the 

 root. Further up, they become shorter but somewhat 

 thicker. They are smooth, cylindrical, very soft, flexible, 

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

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

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

 proceed, and these separate into stalks (terminal branches) 

 that carry from 3—6 polyps (fig. 18). 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 cylindrical, and 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 that the gullet and the mesenterial 

 filaments are visible; on their exterior surface, 8 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 of the anterior body, whilst those upon 

 the sides 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 body proceed a little way up the basal 

 part (Fig. 19). 



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

 pretty dispersed, and are very minute. The forms in 

 which they appear are numerous; spicate fusees, with blunt 

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

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

 beset with small papillae 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, and 

 0.030'"'" in breadth (fig. 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 

 few cruciform quadruplets are seen, whose longitudinal 

 arm measures 0.300'"'", and the transversal arm 0.130'""' 

 (fig. 29). 



