oó 



The calyx is ovoid in form, and the alimentary canal lies in close contact with the 

 body-wall. The number of the tentacles has not been counted with certainty, bnt it appears to 

 be about 20. The two rounded boclies seen in fig. 1 1 close to the intestine are gonads, the 

 one nearer to the intestine being almost certainly an ovary, and the more orally situated body 

 having the appearance of a testis. If this observation be correct the species is hermaphrodite. 



There has been considerable difference of opinion among authors with regard to the 

 question whether the Pedicellinidae are hermaphrodite or dioecions ; and it seems probablc that 

 both conditions really occnr in the Family. In the well known account given by Nitsche, the 

 hermaphrodite condition is clearly figured 1 ); but in this case the ovaries are on the oral sidc 

 of the testes. If my account is correct the opposite condition appears to be characteristic of 

 the present species, in which, moreover, the gonads lie close to the intestine, instead of being 

 separated from it by h large brood-pouch. But as the gonads are clearly young in fig. 11 it is 

 not impossible that their position might have been shifted later by the development of a brood- 

 pouch from the floor of the vestibule. 



The stolon appears to be quite normal in its characters; and a branch may be given 

 off from the base of a stalk (fig. 10). 



Regeneration of the calyces is indicated by their very varying size in the specimens 88. A. ; 

 a large stalk often bearing a very small calyx. 



The measurements given above refer to N° 88. A., in which the muscular base of the 

 stalk bears no distal appendages. In 380. D. the stalk is not more than one third the length of 

 that shown in fig. 1 1 (88. A.), but is not easy to measure in consecjuence of the curved attitude 

 it has assumed. From the observations above recorded on D. discreta it is not improbable 

 that the very long stalks of 88. A. may have been the result of regeneration of the calyces. 

 The specimens 380. D. are, however, characterised by the constant possession of a pair of 

 membranous appendages, attached to the distal end of the muscular base of the stalk ; the 

 characters of which are so similar, in other respects, to those of 88. A. that it does not seem 

 to be necessary to refer the two sets of specimens to different species. 



The determination of the 'Siboga' specimens has been verified by comparison with the 

 typ'e-specimens (Torres Straits, 6 — 7 fathoms; 90. 11.22. 1.) in the British Museum. The types 

 agree closely with 88. A. in size, in the absence of membranous appendages on the muscular 

 base, and in the flexible character of the distal part of the stalk, which, moreover, shows traces 

 of the 'annulated' character noticed in the 'Siboga' specimens. The total length, as recorded 

 by Kirkpatrick, is 3000 fji; the calyx being 400 — 500 u. in length and 350 — 400 u. in breadth. 

 It may be remarked that the distal part of the stalk in the original figure of this species is 

 represented in a condition shrivelled by the action of reagents. 



4. Bare?itsia geniculata n. sp. (PI. II, figs 6, 7). 



Type. 260. E. Stat. 318. 6° 36.5 S., II4°55'.5E., 88 Metres; fine yellowish grey mud (on 260. A., 

 Stichoporina simplex). 



1) Nitsche, H., 1870, ("Üb. d. Anat. v. Pedicellina tchinata", Zeitsclir. wiss. Zool., XX, p. 26, PI. II, fig. 2. D., PI. III, fig. 5. 



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S1BOGA-EXPEDITIE XXVIII (7. 5 



