ZOOPHYTOLOtJY. 155 



greater number of instances this appears to have been entirely 

 removed, the sides of the spiral canal benig formed by the backs 

 of the polyzoan cells, usually disposed in parallel rows, much 

 as they are on the concave surface of some Lunulites. When 

 any remains of the original shell are found, it appears to be 

 reduced to extreme tenuity, and its outer surface to have been 

 eaten away, as it were, by the parasitic incrustation." 



The recent form presents the same aspect as the fossil, 

 haying been moulded apparently on a species of Turritella, 

 which, and this is especially worthy of remark, is, so far as 

 can be seen, as completely removed as it is in the fossil 

 specimens. 



Fain. 4. VivcuLARiiDiE, B. 

 Gen. i. Vineularia. Defrance. 



1. V. oniafa, B. PJ. XXXIV, fig. 4. 



F. ornata, B. ' Brit. Mus. Cat./ Part I, p. 96, pi. Ixv, fig. 2. 



2. r. neozelanica, n. sp. PI. XXXIV, figs. 5 and 5". 



Polyzoario simpUci per tubos radicales basl affixo; cellulanm areis sub- 

 pp-i/ornnbiis^; pariete anteriori perforato ; marginibus Icetibus ; orijicio supra 

 arciiato, labvo inferiori medio denticulato. 



Polyzoariuni simple, rooted at the base by radical tubes; are» of cells 

 siib-pynform; anterior wall perforated; margins smooth; orifice arched 

 above ; lower lip with a broad central denticle. 



Hab.—l^tv} Zealand, Dr. Li/all. 



Two or three other recent species of Vineularia are noticed 

 by M. D^Orbigny ('Voy. dans FAmer. Merid.'), amongst 

 which the only one with which either of the above could possi- 

 bly be confounded is Vineularia eleyans, which differs, how- 

 ever, from F. neozelanica in the absence of the median denticle 

 on the lower lip, and of the pores in the front of the cell, as well 

 as in its branched growth. M. D^Orbigny's Cellaria oniata is 

 a Salicornaria,ii\\(\. otherwise quitedistiuct'from V.ornuta, mihi. 



FaiU. 5. PARCIMINAKIIDiE, B. 



Geji. u. Farchninaria^ B. 



1. v. dichotoma, v. Suhr. (sp.) PL XXXV, figs. 1 and 1". 



Poli/zoario dicholonio, ramulis ci/lindricis gracilibus ; insrmibus : cellulis 

 dausis ventricosis ; osiio promincnte. 



Polyzoariuiri regulaily dichotomous, much bnuiclicd; branches slender, 

 cylindrical, unarmed; cells quite transparent and membranous; ventricose • 

 orifice prominent. ' 



Venuctdaria dichotoma, v. Suhr, ' Ihu-a,' 1834-, p. 725, tab. i, 

 fig 9, 6-, a. 



Hub. — Port Philip (Australia), Kirchenpauer. 



