20 A MONOGIi.VTlI OF THE TEHTIAUY POLYZOA OF VICTOIIIA. 



5. C. pra'idinis, n.sp. PI. II , fig. 20. 



Zoopcia smiill, very skMider ; a vory narrow vitta on each side oxton(lini>- tlic 

 ■whole Iciiiiih of \hc zooocium ; latoral proeossos small, at tlio iippcM* angles of (lie 

 zoa-cia, with a iiiimito avicnlan'inn opciiiiii;' outwards; thyrostorao suhcirciihir, the 

 lower margin straight and slightly thickened. Posterior snrface smooth. 



M.C. 



Allied to the recent C. reiiitsia, but T have no doubt distinct. I have only 

 seen the geminate pair of zoreeia iigured. 



6. C.sacculala,V,\\^\i^Y>- PL II-, fig. 21. 



Catenicella saccidata. Busk, C.P., Pt. I., p. 12. 



Zooecia narroAv, elongated, smooth ; a long marginal vitta extending almost 

 the whole length of the zooecium on either side ; thyrostome siibcircular, the loAver 

 margin straightcr and Avith a slightly rounded mai'supium-like elevation immediately 

 beloAV ; lateral processes small ■with an avicidarium opening outwards. 



M.C. Also living in the South Atlantic. 



This is luidoiibtedly identical -with the C. saocvhita dredged by the Challenger 

 Expedition off the coast of Brazil, and it is certainly a good s])ecies. 



Claviporella, McG. 



Zooecia small ; thyrostome narrow, arched above, contracted beloAV and 

 extending dowmvards as a deep notch ; lateral processes various, usually supporting 

 larti'e avicularia which mav, however, be aborted or absent. 



1. C. vespo'tUio, n.sp. PL II., fig. 22. 



Zoa>cia small, rounded, ju'ojccting forwards, produced below into a long 

 calcareous tube and expanded above into large wing-like lateral processes. 



S.P.; M.C. 



I am very doubtful of the position of this species. In the Muddy Creek 

 specimen the thyrostome is small, contracted below so as to form a larg(> sinus, and 

 the lateral processes are very long and sharply pointed. Jn that from Schnapp(;r 

 Point tho thyrostome is larger, without contraction and straight below, the difference 

 being obviously OAving to the lattin- ha\ing been Avorn. Pending the discovery of 

 other specimens I refer it doubtfully to Ifie present genus, believing it not unlikely 

 that it may not be a member of the Catenicellidse at all. 



