148 ON SOME TERTIAET AUSTEALIAIT POLTZOA. 



EscHARA Clarket, U.S. Tigs. ly, Y, yi, worn specimens, 

 differently magnified, fig. yil, single cell, higlily magnified. 



Polyzoary pedunculate, palmate, or multiform ; cells immersed, 

 pyriform, rounded on the summit and raised round the margin, 

 obtusely carinate in front ; orifice rounded above, contracted 

 below and slightly crescentic, with a raised margin ; mouth sloping 

 downwards so as to leave only half the orifice visible in front ; 

 a pore for the avicularium upon the summit. Surface, covered 

 with distinct equal-sized rounded granules. The worn specimens 

 of this fossil vary very much, the margin of the mouth narrow- 

 ing like a funnel or spread out over the cell ; slightly worn 

 species have the mouth continuous into a kind of groove upwards. 

 It is the prevailing form at Hamilton, and is generally found 

 there in large expanded masses. At Mount G-ambier it also 

 occurs, but in short stems ; the cells are quite visible to the 

 naked eye, Avhich makes the species one of the very few 

 Eschara which is attractive in its ordinary appearance as a fossil, 

 without being magnified. Muddy Creek, Hamilton, yictoria. 



I have dedicated this sjDecies to the Eeverend yice-President 

 of the Society. 



Eschara verrucosa, n.s. Eig. yill. 



Polyzoary expanded, cells arched with a raised sj^irally striated 

 margin, surface covered with w^arty granules, the margin with 

 pores, mouth crescentic and deeply immersed. Mount Grambier. 



Eschara rtjstica, n.s. Eig. IX. 



Polyzoary branched, cells slightly raised, and marked on each 

 side with three pores, gradually increasing in size and terminat- 

 ing in a large pore with a raised margin ; mouth oval and 

 raised, with a pore on each side of the margin for avicularia ; 

 the first pair of pores round and indistinct, somewhat closer than 

 the other ; second pair, round and deep ; third pair much larger, 

 oval and very deep ; a sort of channel on each side of the raised 

 terminal pore ; the worn species have the mouth obliterated, and 

 then look like rustic work in architecture. Mount Gambler ; 

 common. 



Eschara elevata, n.s. (Monilif era ?) . Eig. X. 



Polyzoary branched, cells raised and marked on each side with 

 a linear series of pores, meeting at the apex of the cell ; six or 

 eight in each series ; mouth simple, oval, and produced. Mount 

 Gambief ; rare. 



This may perhaps be a worn species of E. monilif era. — Busk. 



