112 A MONOGRAPH OF THE TERTIARY POLYZOA OF VICTORIA. 



S.P. ; ]M.C. ; B. ; C.B. Recorded liy Waters also from S.AV. Victoria, Mt. 

 Gambicr, and .Vldinga. Recent Florida and Australia. 



In the typical form this is a Avell-mavked species. The much-produced peristome 

 has a lonLj narrow groove extending downwards, frequently closed over in whole or 

 -in part to form a tube, in which case there may l)e another slight groove on each 

 side ; in many instances there is a small pore at its termination. The avicularium 

 varies much. It is inostly situated on a considerable elevation, the mandible, 

 frequently of considerable size, directed obliquely or straight downwards ; sometimes 

 it is quite small, with the mandible rounded. In many zooccia it is altogether 

 wanting. Waters' var. )ut(ei'0)iala has a large oval avicularium below the thyrostome, 

 and above this the peristome rising into a mucro. It has a considerable resemblance 

 to B. (tcicitlifera, but Waters figures the characteristic ooecia of i?. Jissa. 



Var. in sign is. 



Zoa?cia broad, flat, of nearly uniform width, with a narrow raised margin; 

 lower lip of thyrostome widely hollowed, the angles pointed, and with a small sinus; 

 frequently tAVO small ])or(>s inferinrly ; no avicularia. 



S.P. ; M.C.; B. 



Var. he.ragona (fig. 9). 



Zooecia broad, flat, hexagonal, with narrow raised margins; peristome much 

 produced ; lower li]) with a small sinus from which extends a short ridge or tube. 



M.C. 



3. E. acicHlifera, n.sp. PI. XV., figs. 2, 3, 4. 



Zoarium fenestrate. Zooccia ovate, smooth, separated by distinct raised lines ; 

 thyrostome with a sharj) aeiciilate mucro in the centre of the lower lip and a slightly 

 raised process on either side; immediately beloAV this a long raised sessile triangular 

 avicularium (occasionally absent), with the mandible pointing downwards and 

 reaching to the middle of the zofficiiun ; Ix-low this avicularium a small round pore. 

 Ooecia elongated, little j)rominent, smooth above or with a small fissiu'c, grooved 

 below, and the lower margin forming a broad ])late with a roundeil notch on each 

 side. JJorsal surface smooth, with irregular I'aised vibices and a few ovate 

 avicularia. 



S.P. 



4. i?. rimata. Waters. PI. XV., figs. 12, 13. 



n. riniafa. Waters, Q.T.G.S., 1881, .",13. 



Zoarium prol)ably fenestrate, trabecul;e narrow. ZocRcia elongated, narro\\(>d 

 below, separated by narrow raised lines ; ])eristonie projecting forwards with a 



