TUNICATA OF THE SCOTTISH NATIONAL ANTARCTIC KX 1'KI HTlo.X. 99 



Some of the Ascidiozooids in this colony are the best preserved I have seen in all tin- 

 various samples of this species that have passed through my hands, and tln-ir anatomical 

 and histological characters agree in detail with the excellent account of " Julinin " given 

 by CALMAN. In fact, I can agree with CALMAN in everv respect save that of bestowing 

 a new name on the genus. It is evident from his remarks thai he recognised tin- dose 

 affinity to Distaplia, and the only mistake hi- made was in not referring the species in 

 that genus. 



I agree, however, with HARTMEYKR * that it is practically certain that this form had a 

 distinctive generic name applied to it at a still earlier date. Tin- " 1 1 <>l ,>-.<> ri/lnul m 

 of LESSON (Voyage " Co^itide,"' Zool., ii. p. 439 ; L830) agrees in all the points that an- 

 mentioned in the brief description with our form. It is said to have a " holothnriform " 

 body, cylindrical, with rounded ends, free and floating (which is apparently the con- 

 dition in which our form is usually picked up), of mucous appearance, with a whitish 

 fibrous centre composed of tubes coming from the ends of the animals ( = Ascidiozooids). 

 It was found "30 leagues from Terre-des-Etats," at the southern ext remit v of America. 

 1 notice that M.ICHAELSEN (Hamburger magalhaemtische Sammelreise, " Tunicaten," 

 1907, p. 40) has also suggested with a (!) that LESSON'S I/o/<>:<.n( <///;//<///<(/ is the same 

 as " Julinia " (or Distaplia} iyitota. 



Family POLYCUNII> r. 



Polyclinnni rompftiHtt/iiiit, Ilerdman ('.). 



The species was described t from a specimen obtained at Port .Jackson, Australia. 

 The Scotia material was taken at Station 483, at the entrance to Saldanha Bay, on 

 May '21, 1904, from a depth of '25 fathoms. It consists of four fragments, cut probably 

 from the same colony, the largest of which measures about G cm. by 2. The colony 

 was apparently flattened, and had much the same shape and colour as the Australian 

 one. The Ascidiozooids also have the same type of structure. The post-abdomen is 

 rather longer than in the Australian specimens, but that is a matter that varies with 

 the reproductive condition. The specimens are, however, so fragmentary, and there 

 is so little that is distinctive, that I cannot be certain as to tin- identity of the sp.-eies ; 

 but there is nothing in the microscopic details to negative the view that the Falkland 

 Islands specimens belong to this Australian species. 



Amaroucium distomoides, Ilerdman (?). 



I refer one large colony and a few small fragments in the Scot/a, collection to this 

 Australian species.^ The original specimen came from Port .lack-on; the N<w>" 



* In the new L-ditimi of the " Tunirata" of P.iioNN'V Tin I 



t See HERDMAN, /Vso-iy/iv Catalogue of the 7'ini/V.iJii "/'"" Australian M idiiey, .V.N.I/'., l^ftii. ]>. si. (in 



the plate (Pel. I. figs. 9-12) it is ivf.>nvd In as ' /',,/^-//m r>. V f- 

 \ See HKRDMAX, )'///'</., \\. 7;">. 



(ROV. SOC. EDIN. TRANS., VOL. XLVIII., 317.) 



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