116 A MONOGKAPII OF TUE TERTIARY I'OLYZOA OF VICTORIA. 



13. JS. ba'u'Hsdalei, n.sp. PI. XV., fig. 11. 



Foiiestrie clono-atod, narrower than tli(> trahccultc ; the transverse; hars joining 

 the branches non-eellil'erons. ZocKcia indistinct, raised anteriorly ; surracc; sniootli, 

 thyrostome (primary) immersed, rounded above Avitb a sinus in the lower lip ; in 

 most zocecia the i)eristome mnch produced on one side of the sinus (less on the 

 other), thick, jn-ojecting forwards and seemingly (?) having an avieularinm on its 

 margin. Dorsal surface finely granular, divided into irregular spaces by nai'iow 

 vibices. 



B. 



11. It. cork'iisis, n.sp. PL XV., fig. 19. 



Zoarium bianched. Zoacia irregularly rhomboidal or hexagonal, separated 

 by narroAv raised lines ; surface smooth ; thyrostome rounded, straight beloAv ; 

 peristome raised, with a stout spine on either side about or a little above the 

 middle; a linguil'orm avicularium on its lower edge, the base at the middle of the 

 lower lip and the mandible extending to one side obliquely outwards and doAvn- 

 Avards ; a small sessile or immersed avicularium about the middle of the zooecia. 

 Dorsal surface smooth, divided into large irregidar s2)aees by narrow sharp vibices. 



CD. 



15. B. siihimmersa, n.sp. PI. XV., fig. IG. 



Penestrae elongated, pointed above and l)eloAV, Avider than the trabeculae. 

 Zooecia narroAV, elongated, separated by narrow raised lines; surface smooth or 

 very faintly granular; thyrostome roiuided, i)eristome thickened, Avith a distinct 

 rovmded sinus inferiorly. Otucia ineons2)icuous, convex, jjartly immersed. Dorsal 

 surface smooth or faintly granular, traversed by irregular narroAV vibices. 



B. 



IG. i?. sinuosa, Kii'kp. PL XV., figs. 1, la. 



a. simiosa, Kii-kp., A.M.X.II., 1888. 



Zoarium fenestrate; fenestras small, elongated, rather narrower than the 

 trabecuke, Zoacia irregularly shajied, separated by prominent raised lines ; 

 thyrostome rounded above and finely denticulate or crenidate, Avith a deep rounded 

 sinus in the loAver lip much contracted at its commencement, so as to give the 

 Avhole a clithridiate appearance ; surface irregular, Avith scattered elliptical avicularia 

 and pores. Dorsal surface divided by distinct but little elevated vibices, each area 

 Avilh a small rounded or elliptical avicularium. 



S.P. Living. Australia. 



