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It follows from the above summary that the genus Victorella has nearly always been 

 found in inland brackish waters, although Annandale l ) states that it is known to exist in the 

 littoral zone of the sea in Europe. The occurrence of the following species among the 'Siboga' 

 dredgings is thus of special interest. I record it as : — 



i. Victorella sibogac n. sp. (PI. III, figs 12 — 15). 



Type. 45LB. Stat. 64. Kambaragi Bay, Tanah Djampeah, o — 32 Metres; coral, coral-sand ; trawl, 

 dredge and shore-exploration (On a chitinous tube, perhaps of a Phyllocliaetopterus). 

 331. B. Stat. 64. do., do. (on Tubucellaria fusiformis). 



337. K. Stat. 71. Makassar, o — 32 Metres; mud, sand vvith mud; dredge and shore-exploration. 

 (Also on slide 337. G. 1 , Nolella papuensis, from the same Station). (On the axis of an 

 Alcyonarian). 



The original label of 451. B. stated the depth as 32 Metres; and that of 331. B. as 

 30 Metres. It thus appears that the specimens were dredged and were not from the "shore- 

 exploration" included in the official list of the Stations. 337. K. was marked 27 — 36 Metres. 



Zoarium partly adherent, partly giving rise to erect growths. Zooecia large, very variable 

 in form; sometimes with the erect portion less developed than the adherent part (fig. 13), but 

 in other conditions with the adherent part evanescent (fig. 1 2). Daughter-zooecia produced 

 sparingly, from the side of the parent, or as terminal buds continuing its direction. Distal end 

 of the zooecium more or less rounded, the orifice only slightly quadrangular. Polypides with 

 numerous tentacles. 



Previous authors are agreed in stating that the genus Victorella is characterised by 

 having 8 tentacles. In the present species the number is certainly much larger. I have been 

 unable to ascertain it accurately, but I think it is safe to say that it is not less than 16, and 

 probably more than 20. I can find no other character which would justify the separation of 

 this species from Victorella, the generic diagnosis of which will accordingly have to be amended, 

 with regard to the number of tentacles, if V. sibogae is to be included in it. In certain other 

 respects, as in the mode of branching and in the characters of the oesophageal limb of the 

 alimentary canal, the present species shows very definite resemblances to others which are 

 referred to the same genus. 



The cuticle of V. sibogae is thick and brownish in the older parts, but it is sufficiently 

 transparent to allow the internal structures to be seen fairly well in mounted specimens. The 

 condition is, however, very different from the "extreme transparency" alluded to by Hincks in 

 V. pavida. Numerous transverse or circular wrinkles run across the ectocyst (fig. 14), to a 

 degree which varies in different zooecia and in different parts of the same zooecium. 



The general architecture of the colony conforms closely with the type prevalent in the 

 genus. The difference between attached and free parts is so great that it might be supposed 

 at first sight that two species were present; but this is quite in agreement with what is known 

 of other species. In the basal parts of the colony (fig. 13) a considerable proportion of the 



1) Annandale, N., 191 i 2 , p. 197. 



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