118 A MOKOGRAPII OF THE TEKTIARY TOLYZOA OF VICTOKIA. 



deal ill vt'Ccut speciiaciis. lii the I'ossil the avicuhinum is .at one side, almost within 

 thn aperture, and at the other side is a small sinvus or pore ; this is the normal 

 arrangement. 



Sub-order CYCLOSTOMATA, Busk. 



I. AllTICULATA S. RADICATA. 



/uariuiii erect, hraiiehed, divided into distiiicl interiiodes by llexible joints, 

 attached by radical tubes. Zooecia tubidar, calaireous, in one or two series. 



Family Ckisiiu.e. 

 The only family. 



Crisia, Lamouroux. 

 Two or more zoiecia in each inleruode, in two alternate series. 



1. C. macrostoma, n.sp. PI. XVI., figs. 3, 4. 



Branches narrow, cylindrical, closely and distinctly i)uiictate. Zooicia entirely 

 connate and undistinguishable ; thyrostome rounded or elliptical, opening outwards 

 and upwards. 



M.C. 



I have only a fcAV specimens of this si)ecies and none oi' them seem to re])resent 

 complete internodes. The zofecia are quite indistinct throughout. In that shewn 

 in lig. 3 there is a faint raised line along the middle marking the division of the two 

 series of zooecia. 



2. C. f/mciUs, n.sp. PI. XVI., iig. 5. 



Branches very slender, punctate. Zoa'cia closely adnate throughout but defined 

 on the surface, arched outwards ; thyrostome circular, scarcely projecting and 

 opening outwards and upwards. 



M.C. 



Closely allied to the hist, of which it may Jje a slender \ariety. It dilVers in 

 tlie zo(fcia being deliiunl on the surface by a faint groove and being more arched 

 outwards. The puncta are also fewer and smaller. 



3. C. acropora, Busk. PI. XVI., ligs. 2, 8, *J. 



C. aci-uporu. Busk, Voy. of " llattlesnake," Vol. L, 351; B.M.C., ill., 0; 

 C.P., II., 6; McG., P.Z.V., 39. 



